DECEMBER 2014
DSC-5309/06
1
©2014 Integrated Device Technology, Inc.
Features
256K x 36, 512K x 18 memory configurations
Supports fast access times:
7.5ns up to 117MHz clock frequency
8.0ns up to 100MHz clock frequency
8.5ns up to 87MHz clock frequency
LBO input selects interleaved or linear burst mode
Self-timed write cycle with global write control (GW), byte write
enable (BWE), and byte writes (BWx)
256K X 36, 512K X 18
3.3V Synchronous SRAMs
3.3V I/O, Burst Counter
Flow-Through Outputs, Single Cycle Deselect
IDT71V67703
IDT71V67903
Functional Block Diagram
A
0–
A
17/18
ADDRESS
REGISTER
CLR
A1*
A0*
18/19
2
18/19
A
2-
A
18
256K x 36/
512K x 18-
BIT
MEMORY
ARRAY
INTERNAL
ADDRESS
A
0
,A
1
BW
4
BW
3
BW
2
BW
1
Byte 1
Write Register
36/18 36/18
ADSP
ADV
CLK
ADSC
CS0
CS
1
Byte 1
Write Driver
Byte 2
Write Driver
Byte 3
Write Driver
Byte 4
Write Driver
Byte 2
Write Register
Byte 3
Write Register
Byte 4
Write Register
9
9
9
9
GW
CE
BWE
LBO
I/O
0
–I/O
31
I/O
P1–
I/O
P4
OE
DATA INPUT
REGISTER
36/18
OUTPUT
BUFFER
DQ
Enable
Register
OE
Burst
Sequence
CEN
CLK EN
CLK EN
Q1
Q0
2
Burst
Logic
Binary
Counter
5309 drw 01
ZZ
Powerdown
,
3.3V core power supply
Power down controlled by ZZ input
3.3V I/O supply (VDDQ)
Packaged in a JEDEC Standard 100-pin thin plastic quad
flatpack (TQFP), 119 ball grid array (BGA) and 165 fine pitch ball
grid array (fBGA)
Green parts available see ordering information
6.422
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Description
The IDT71V67703/7903 are high-speed SRAMs organized as 256K
x 36/512K x 18. The IDT71V67703/7903 SRAMs contain write, data,
address and control registers. There are no registers in the data output
path (flow-through architecture). Internal logic allows the SRAM to
generate a self-timed write based upon a decision which can be left until
the end of the write cycle.
The burst mode feature offers the highest level of performance to the
system designer, as the IDT71V67703/7903 can provide four cycles of
data for a single address presented to the SRAM. An internal burst
address counter accepts the first cycle address from the processor,
initiating the access sequence. The first cycle of output data will flow-
through from the array after a clock-to-data access time delay from the
rising clock edge of the same cycle. If burst mode operation is selected
(ADV=LOW), the subsequent three cycles of output data will be available
to the user on the next three rising clock edges. The order of these three
addresses are defined by the internal burst counter and the LBO input pin.
The IDT71V67703/7903 SRAMs utilize IDT’s latest high-performance
CMOS process and are packaged in a JEDEC standard 14mm x 20mm
100-pin thin plastic quad flatpack (TQFP) as well as a 119 ball grid array
(BGA) and a 165 fine pitch ball grid array (fBGA).
Pin Description Summary
A
0
-A
18
Address Inputs Input Synchronous
CE Chip Enable Inp ut S ynchrono us
CS
0
, CS
1
Chip Sele c ts Inp ut S ynchrono us
OE Output Enable Input Asynchro nous
GW Glo b al Write Enab le Inp ut S ynchrono us
BWE By te Write Enab le Inp ut S ynchrono us
BW
1
, BW
2
, BW
3
, BW
4
(1)
Ind ividual Byte Write Selects Inp ut S ynchrono us
CLK Clock Input N/A
ADV Burst Add re ss Advance Inp ut S ynchrono us
ADSC Add ress Status (Cache Contro lle r) Inp ut S ynchrono us
ADSP Address Status (Processor) Input Synchronous
LBO Line ar / Interle av ed Burs t Orde r Inp ut DC
ZZ Sleep Mode Input Asynchronous
I/O
0
-I/O
31
, I/O
P1
-I/O
P4
Data Input / Outp ut I/O Sync hrono us
V
DD
, V
DDQ
Core Power, I/O Power Sup ply N/A
V
SS
Ground Supply N/A
5309 tbl 01
NOTE:
1. BW3 and BW4 are not applicable for the IDT71V67903.
6.42
3
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Symbol Pin Function I/O Active Description
A
0
-A
18
Address Inputs I N/A Synchronous Address inputs. The address register is trigge red by a combi-nation of the
rising edge of CLK and ADSC Low or ADSP Lo w and CE Low.
ADSC A d d re s s Status
(Cache Contro lle r) I LOW Synchronous Address Status from Cache Controller. ADSC is an active LOW inp ut that is
used to load the address registers with new addresses.
ADSP Ad d re s s Status
(Processor) I LOW Synchronous Address Status from Processor. ADSP is an active LOW inp ut that is us ed to
load the address registers with new addresses. ADSP is gated by CE.
ADV Burst Address
Advance I LOW Synchronous Address Advance. ADV i s an ac tive LOW inp ut that is us e d to ad v anc e the
internal burst counter, controlling b urst acces s after the initial address is loaded. When the
inp ut is HIGH the burst counter is not incremented; that is, there is no address advance.
BWE Byte Write Enable I LOW Synchronous byte write enable gates the byte write inputs BW
1
-BW
4
. If BWE is LOW at the
rising edge of CLK then BWx inputs are passed to the next stage in the circuit. If BWE is
HIGH then the byte write i nputs are blocked and only GW can initiate a write cycle.
BW
1
-BW
4
Ind iv id ual B yte
Write Enable s I LOW Synchronous byte write enables. BW
1
controls I/O
0-7
, I/O
P1
, BW
2
controls I/O
8-15
, I/O
P2
, etc.
Any active byte write cause s all outputs to be disabled.
CE Chip Enab le I LOW Synchronous chip enable. CE is us e d with CS
0
and CS
1
to enab le the IDT71V67703/7903.
CE also gates ADSP.
CLK Clock I N/A This is the clock input. All timing references for the device are made with respect to this
input.
CS
0
Chip Select 0 I HIGH Synchronous active HIGH chip select. CS
0
is used with CE and CS
1
to e nab l e the c hip .
CS
1
Chip Se lect 1 I LOW Synchrono us active LOW chip sele ct. CS
1
is used with CE and CS
0
to enable the chip.
GW Global Write
Enable I LOW Synchronous global write enable. This input will write all four 9-bit data bytes when LOW
on the rising edge of CLK. GW supersedes individual byte write enables.
I/O
0
-I/O
31
I/O
P1
-I/O
P4
Data Input/Output I/O N/A Synchronous data input/output (I/O) pins. The data input path is registered, triggered by
the rising edge of CLK. The data output path is flow-through (no output register).
LBO Linear Burst Order I LOW Asynchro nous burst order selection input. When LBO is HIGH, the inter-leaved burst
sequence is selected. When LBO is LOW the Linear burst sequence is selected. LBO is a
static input and must not change state while the device is operating.
OE Outp ut Enable I LOW Async hronous o utput e nab le. Whe n OE is LOW the data output drivers are enabled on the
I/O pins if the c hip is also selected. When OE is HIGH the I/O pins are in a high-
impedance state.
V
DD
Power Supply N/A N/A 3.3V core power supply.
V
DDQ
Power Supp ly N/A N/A 3.3V I/O Supp ly.
V
SS
Ground N/A N/A Ground.
NC No Connect N/A N/A NC pins are not electrically connected to the device.
ZZ Sleep Mode 1 HIGH Asynchronous sleep mode input. ZZ HIGH will g ate the CLK internally and power down
the IDT71V 67703/ 7903 to its lo we st p o we r co ns um ption l e v el. Data re te ntio n is g uarante e d
in Sleep Mode.
5309 tbl 02
Pin Definitions(1)
NOTE:
1. All synchronous inputs must meet specified setup and hold times with respect to CLK.
6.424
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
100-Pin TQFP Capacitance
(TA = +25° C, f = 1.0MHz)
Recommended Operating
Temperature Supply Voltage
Absolute Maximum Ratings(1)
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated
in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
2. VDD terminals only.
3. VDDQ terminals only.
4. Input terminals only.
5. I/O terminals only.
6 . This is a steady-state DC parameter that applies after the power supplies have
ramped up. Power supply sequencing is not necessary; however, the voltage
on any input or I/O pin cannot exceed VDDQ during power supply ramp up.
7. TA is the "instant on" case temperature.
Recommended DC Operating
Conditions
NOTE:
1. VIL (min) = -1.0V for pulse width less than tCYC/2, once per cycle.
NOTE:
1. This parameter is guaranteed by device characterization, but not production tested.
Symbol Rating Commercial Unit
V
TERM
(2)
Terminal Vo ltage with
Re sp e c t to GND -0.5 to +4.6 V
V
TERM
(3,6)
Terminal Vo ltage with
Re sp e c t to GND -0.5 to V
DD
V
V
TERM
(4,6)
Terminal Vo ltage with
Re sp e c t to GND -0. 5 to V
DD
+0.5 V
V
TERM
(5,6)
Terminal Vo ltage with
Re sp e c t to GND -0.5 to V
DDQ
+0.5 V
T
A(7)
Operating Temperature -0 to + 70
o
C
T
BIAS
Temperature
Under Bias -55 to +125
o
C
T
STG
Storage
Temperature -55 to +125
o
C
P
T
Po we r Di s si p atio n 2. 0 W
I
OUT
DC Outp ut Current 50 mA
53 09 t b l 03
Grade Temperature
(1)
V
SS
V
DD
V
DDQ
Co m me rc i al 0°C to + 70°C 0V 3. 3 5% 3. 3V± 5%
Ind us tri al -40°C to +85°C 0V 3. 3 5% 3. 3V± 5%
5309 tbl 04
Symbol Parameter Min. Typ. Max. Unit
V
DD
Core Supply Voltage 3.135 3.3 3.465 V
V
DDQ
I/O Sup ply Voltag e 3.135 3.3 3.465 V
V
SS
Supply Voltage 0 0 0 V
V
IH
Input High Voltage - Inputs 2.0 ____ V
DD
+0.3 V
V
IH
Input High Voltage - I/O 2.0 ____ V
DDQ
+0.3 V
V
IL
In p u t Low Vol tag e -0. 3
(1)
____ 0.8 V
5309 tbl 05
Symbol Parameter
(1)
Conditions Max. Unit
C
IN
Inp ut Cap acitanc e V
IN
= 3dV 5 p F
C
I/O
I/ O Cap ac i tanc e V
OUT
= 3dV 7 pF
5309 t bl 07
Symbol Parameter
(1)
Conditions Max. Unit
C
IN
Inp ut Cap acitanc e V
IN
= 3dV 7 pF
C
I/O
I/ O Ca p ac ita nc e V
OUT
= 3dV 7 pF
5309 tbl 07a
119 BGA Capacitance
(TA = +25° C, f = 1.0MHz)
NOTE:
1. TA is the "instant on" case temperature.
165 fBGA Capacitance
(TA = +25° C, f = 1.0MHz)
Symbol Parameter
(1)
Conditions Max. Unit
C
IN
Inp ut Cap acitanc e V
IN
= 3dV 7 pF
C
I/O
I/ O Ca p ac ita nc e V
OUT
= 3dV 7 pF
5309 tb l 07b
6.42
5
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration – 256K x 36, 100-Pin TQFP
Top View
NOTES:
1. Pin 14 does not have to be directly connected to VSS as long as the input voltage is < VIL.
2. Pin 64 can be left unconnected and the device will always remain in active mode.
10099989796959493929190 8786858483828189 88
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
A
6
A
7
CE
CS
0
BW
4
BW
3
BW
2
BW
1
CS
1
V
DD
V
SS
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A
8
A
9
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
A
16
NC
LBO
A
14
A
13
A
12
A
11
A
10
V
DD
V
SS
A
0
A
1
A
2
A
3
A
4
A
5
I/O
P4
I/O
31
I/O
30
V
DDQ
V
SS
I/O
29
I/O
28
I/O
27
I/O
26
V
SS
V
DDQ
I/O
25
I/O
24
V
SS
(1)
V
DD
I/O
23
I/O
22
V
DDQ
V
SS
I/O
21
I/O
20
I/O
19
I/O
18
V
SS
V
DDQ
I/O
17
I/O
16
I/O
P3 80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
I/O
P2
I/O
14
V
DDQ
V
SS
I/O
13
I/O
12
I/O
11
I/O
10
V
SS
V
DDQ
I/O
9
I/O
8
V
SS
NC
V
DD
ZZ
(2)
I/O
7
I/O
6
V
DDQ
V
SS
I/O
5
I/O
4
I/O
3
I/O
2
V
SS
V
DDQ
I/O
1
I/O
0
I/O
P1
V
SS
I/O
15
A
15
5309 drw 02a
NC
NC
,
A
17
NC
6.426
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration – 512K x 18, 100-Pin TQFP
Top View
NOTES:
1. Pin 14 does not have to be directly connected to VSS as long as the input voltage is < VIL.
2. Pin 64 can be left unconnected and the device will always remain in active mode.
10099989796959493929190 8786858483828189 88
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
A
6
A
7
CE
CS
0
NC
NC
BW
2
BW
1
CS
1
V
DD
V
SS
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A
8
A
9
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
A
17
NC
LBO
A
15
A
14
A
13
A
12
A
11
V
DD
V
SS
A
0
A
1
A
2
A
3
A
4
A
5
NC
NC
NC
V
DDQ
V
SS
NC
I/O
P2
I/O
15
I/O
14
V
SS
V
DDQ
I/O
13
I/O
12
V
SS
V
DD
I/O
11
I/O
10
V
DDQ
V
SS
I/O
9
I/O
8
NC
NC
V
SS
V
DDQ
NC
NC
NC
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
A
10
NC
V
DDQ
V
SS
NC
I/O
P1
I/O
7
I/O
6
V
SS
V
DDQ
I/O
5
I/O
4
V
SS
V
DD
ZZ
(2)
I/O
3
I/O
2
V
DDQ
V
SS
I/O
1
I/O
0
NC
NC
V
SS
V
DDQ
NC
NC
NC
V
SS
(1)
NC
A
16
5309 drw 02b
NC
NC
,
A
18
NC
NC
6.42
7
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
1234567
AV
DDQ
A
6
A
4
ADSP A
8
A
16
V
DDQ
BNC CS
0
(4)
A
3
ADSC A
9
A
18
NC
CA
7
A
2
V
DD
A
13
A
17
NC
DI/O
8
NC V
SS
NC V
SS
I/O
P1
NC
ENC I/O
9
V
SS
CE V
SS
NC I/O
7
FV
DDQ
NC V
SS
OE V
SS
I/O
6
V
DDQ
GNC I/O
10
ADVBW
2
NC I/O
5
HI/O
11
NC V
SS
GW V
SS
I/O
4
NC
JV
DDQ
V
DD
NC V
DD
NC V
DD
V
DDQ
KNC I/O
12
V
SS
CLK V
SS
NC I/O
3
LI/O
13
NC NC BW
1
I/O
2
NC
MV
DDQ
I/O
14
V
SS
BWE V
SS
NC V
DDQ
NI/O
15
NC V
SS
A
1
V
SS
I/O
1
NC
PNC I/O
P2
V
SS
A
0
V
SS
NC I/O
0
RNC A
5
LBO V
DD
NCA
12
V
SS
TNC A
10
A
15
NC A
14
A
11
ZZ
UV
DDQ
DNU
(3)
DNU
(3)
DNU
(3)
DNU
(3)
DNU
(3)
V
DDQ
5309 drw 02d
NC
V
SS
V
SS
,
(1)
(2)
Pin Configuration – 512K x 18, 119 BGA
Pin Configuration – 256K x 36, 119 BGA
Top View
Top View
NOTES:
1. R5 does not have to be directly connected to VSS as long as the input voltage is < VIL.
2. T7 can be left unconnected and the device will always remain in active mode.
3. DNU= Do not use; these signals can either be left unconnected or tied to Vss.
4. On future 18M devices CS0 will be removed, B2 will be used for address expansion.
1234567
AVDDQ A6A4ADSP A8A16 VDDQ
BNC CS0
(4)
A3ADSC A9NC
CA7A2VDD A12 A15 NC
DI/O16 I/OP3 VSS NC VSS I/OP2 I/O15
EI/O17 I/O18 VSS CE VSS I/O13 I/O14
FVDDQ I/O19 VSS OE VSS I/O12 VDDQ
GI/O20 I/O21 BW3ADV BW2I/O11 I/O10
HI/O22 I/O23 VSS GW VSS I/O9I/O8
JVDDQ VDD NC VDD NC VDD VDDQ
KI/O24 I/O26 VSS CLK VSS I/O6I/O7
LI/O25 I/O27 BW4NC BW1I/O4I/O5
MVDDQ I/O28 VSS BWE VSS I/O3VDDQ
NI/O29 I/O30 VSS A1VSS I/O2I/O1
PI/O31 I/OP4 VSS A0VSS I/O 0
I/O
P1
RNC A5LBO VDD NCA13
TNC NC A10 A11 A14 NC ZZ
UVDDQ DNU
(3)
DNU
(3)
DNU
(3)
DNU
(3)
DNU
(3)
VDDQ
NC
VSS
5309 drw 02c
A17
(1)
(2)
6.428
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration – 512K x 18, 165 fBGA
Pin Configuration – 256K x 36, 165 fBGA
1234567891011
ANC
(3)
A
7
CE BW
3
BW
2
CS
1
BWE ADSC ADV A
8
NC
BNC A
6
CS
0
BW
4
BW
1
CLK GW OE ADSP A
9
NC
(3)
CI/O
P3
NC V
DDQ
V
SS
V
SS
V
SS
V
SS
V
SS
V
DDQ
NC I/O
P2
DI/O
17
I/O
16
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
15
I/O
14
EI/O
19
I/O
18
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
13
I/O
12
FI/O
21
I/O
20
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
11
I/O
10
GI/O
23
I/O
22
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
9
I/O
8
HV
SS
(1)
NC NC V
DD
V
SS
V
SS
V
SS
V
DD
NC NC ZZ
(2)
JI/O
25
I/O
24
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
7
I/O
6
KI/O
27
I/O
26
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
5
I/O
4
LI/O
29
I/O
28
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
3
I/O
2
MI/O
31
I/O
30
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
1
I/O
0
NI/O
P4
NC V
DDQ
V
SS
NC NC
(3)
NC V
SS
V
DDQ
NC I/O
P1
PNCNC
(3)
A
5
A
2
DNU
(4)
A
1
DNU
(4)
A
10
A
13
A
14
A
17
RLBO NC
(3)
A
4
A
3
DNU
(4)
A
0
DNU
(4)
A
11
A
12
A
15
A
16
5309tb l 17a
1234567891011
ANC
(3)
A
7
CE BW
2
NC CS
1
BWE ADSC ADV A
8
A
10
BNC A
6
CS
0
NC BW
1
CLK GW OE ADSP A
9
NC
(3)
CNC NCV
DDQ
V
SS
V
SS
V
SS
V
SS
V
SS
V
DDQ
NC I/O
P1
DNC I/O
8
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
NC I/O
7
ENC I/O
9
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
NC I/O
6
FNCI/O
10
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
NC I/O
5
GNC I/O
11
V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
NC I/O
4
HV
SS
(1)
NC NC V
DD
V
SS
V
SS
V
SS
V
DD
NC NC ZZ
(2)
JI/O
12
NC V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
3
NC
KI/O
13
NC V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
2
NC
LI/O
14
NC V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
1
NC
MI/O
15
NC V
DDQ
V
DD
V
SS
V
SS
V
SS
V
DD
V
DDQ
I/O
0
NC
NI/O
P2
NC V
DDQ
V
SS
NC NC
(3)
NC V
SS
V
DDQ
NC NC
PNC NC
(3)
A
5
A
2
DNU
(4)
A
1
DNU
(4)
A
11
A
14
A
15
A
18
RLBO NC
(3)
A
4
A
3
DNU
(4)
A
0
DNU
(4)
A
12
A
13
A
16
A
17
5309 tbl 17 b
NOTES:
1. H1 does not have to be directly connected to VSS, as long as the input voltage is < VIL.
2. H11 can be left unconnected and the device will always remain in active mode.
3. Pin N6, B11, A1, R2 and P2 are reserved for 18M, 36M, 72M, and 144M and 288M respectively.
4. DNU= Do not use; these signals can either be left unconnected or tied to Vss.
6.42
9
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
1
2
3
4
20 30 50 100 200
Δt
CD
(Typical, ns)
Capacitance (pF)
80
5
6
5309 drw 05
,
V
DDQ
/2
50Ω
I/O Z
0
=50Ω
5309 drw 03
,
Symbol Parameter Test Conditions Min. Max. Unit
|I
LI
| Input Leakag e Current V
DD
= Max., V
IN
= 0V to V
DD
___
A
|I
LI
|LBO Input Leakag e Current
(1)
V
DD
= Max., V
IN
= 0V to V
DD
___
30 µA
|I
LO
| Output Leak age Current V
OUT
= 0V to V
CC
___
A
V
OL
Outp ut Low Vo ltag e I
OL
= +8mA, V
DD
= Min.
___
0.4 V
V
OH
Outp ut Hi gh Vo ltag e I
OH
= -8mA, V
DD
= Min. 2. 4
___
V
5309 tbl 08
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range (1)
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range (VDD = 3.3V ± 5%)
Figure 2. Lumped Capacitive Load, Typical Derating
Figure 1. AC Test Load
AC Test Load
AC Test Conditions
(VDDQ = 3.3V/2.5V)
NOTE:
1. The LBO pin will be internally pulled to VDD if it is not actively driven in the application and the ZZ in will be internally pulled to VSS if not actively driven.
NOTES:
1. All values are maximum guaranteed values.
2. At f = fMAX, inputs are cycling at the maximum frequency of read cycles of 1/tCYC while ADSC = LOW; f=0 means no input lines are changing.
3. For I/Os VHD = VDDQ - 0.2V, VLD = 0.2V. For other inputs VHD = VDD - 0.2V, VLD = 0.2V.
Symbol Parameter Test Conditions
7.5ns 8ns 8.5ns Unit
Com'l Ind Com'l Ind Com'l Ind
I
DD
Operating Power Supply Current Device Selected, Outputs Open, V
DD
= Max.,
V
DDQ
= Max., V
IN
> V
IH
or < V
IL
, f = f
MAX
(2)
265 285 210 230 190 210 mA
I
SB1
CMOS Standby Power Supply Current Device Deselected, Outputs Open, V
DD
= Max.,
V
DDQ
= Max., V
IN
> V
HD
or < V
LD
, f = 0
(2,3)
50 70 50 70 50 70 mA
I
SB2
Clock Running Power Supply Current Device Deselected, Outputs Open, V
DD
= Max.,
V
DDQ
= Max., V
IN
> V
HD
or < V
LD
, f = f
MAX
(2,.3)
145 165 140 160 135 155 mA
I
ZZ
Full Sleep Mode Supply Current ZZ > V
HD,
V
DD
= Max . 50 70 50 70 50 70 mA
5309 tb l 0 9
Inp ut Puls e Le ve ls
Inp ut Ris e / Fal l Tim e s
Inp ut Tim ing Re fe re nce Le v e l s
Output Timing Reference Le vels
AC Test Load
0 to
3V
2ns
1.5V
1.5V
See Figure 1
53 09 t b l 10
6.4210
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Synchronous Truth Table (1,3)
NOTES:
1 . L = VIL, H = VIH, X = Don’t Care.
2. OE is an asynchronous input.
3. ZZ - low for the table.
Operation Address
Used CE CS
0
CS
1
ADSP ADSC ADV GW BWE BWxOE
(2)
CLK I/O
De s e l e c te d Cy c l e , P o wer Do wn No ne H X X X L X X X X X HI-Z
De s e l e c te d Cy c l e , P o wer Do wn No ne L X H L X X X X X X HI-Z
De s e l e c te d Cy c l e , P o wer Do wn No ne L L X L X X X X X X HI-Z
De s e l e c te d Cy c l e , P o wer Do wn No ne L X H X L X X X X X HI-Z
De s e l e c te d Cy c l e , P o wer Do wn No ne L L X X L X X X X X HI-Z
Read Cycle, Begin Burst External L H L L X X X X X L D
OUT
Read Cycle, Begin Burst External L H L L X X X X X H HI-Z
Read Cycle, Begin Burst External L H L H L X H H X L D
OUT
Read Cycle, Begin Burst External L H L H L X H L H L D
OUT
Read Cycle, Begin Burst External L H L H L X H L H H HI-Z
Write Cycle, Begin Burst External L H L H L X H L L X D
IN
Write Cycle, Begin Burst External L H L H L X L X X X D
IN
Re ad Cycle , Co nti nue Burs t Ne xt X X X H H L H H X L D
OUT
Re ad Cycle , Co nti nue Burs t Ne xt X X X H H L H H X H HI-Z
Re ad Cycle , Co nti nue Burs t Ne xt X X X H H L H X H L D
OUT
Re ad Cycle , Co nti nue Burs t Ne xt X X X H H L H X H H HI-Z
Re ad Cycle , Co nti nue Burs t Ne xt H X X X H L H H X L D
OUT
Re ad Cycle , Co nti nue Burs t Ne xt H X X X H L H H X H HI-Z
Re ad Cycle , Co nti nue Burs t Ne xt H X X X H L H X H L D
OUT
Re ad Cycle , Co nti nue Burs t Ne xt H X X X H L H X H H HI-Z
Write Cycle, Continue Burst Next X X X H H L H L L X D
IN
Write Cycle, Continue Burst Next X X X H H L L X X X D
IN
Write Cycle, Continue Burst Next H X X X H L H L L X D
IN
Write Cycle, Continue Burst Next H X X X H L L X X X D
IN
Read Cycle, Suspend Burst Current X X X H H H H H X L D
OUT
Read Cycle, Suspend Burst Current X X X H H H H H X H HI-Z
Read Cycle, Suspend Burst Current X X X H H H H X H L D
OUT
Read Cycle, Suspend Burst Current X X X H H H H X H H HI-Z
Read Cycle, Suspend Burst Current H X X X H H H H X L D
OUT
Read Cycle, Suspend Burst Current H X X X H H H H X H HI-Z
Read Cycle, Suspend Burst Current H X X X H H H X H L D
OUT
Read Cycle, Suspend Burst Current H X X X H H H X H H HI-Z
Write Cycle, Suspend Burst Current X X X H H H H L L X D
IN
Write Cycle, Suspend Burst Current X X X H H H L X X X D
IN
Write Cycle, Suspend Burst Current H X X X H H H L L X D
IN
Write Cycle, Suspend Burst Current H X X X H H L X X X D
IN
5309 tbl 11
6.42
11
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Linear Burst Sequence Table ( LBO=VSS)
Synchronous Write Function Truth Table (1, 2)
Asynchronous Truth Table (1)
Interleaved Burst Sequence Table ( LBO=VDD)
NOTES:
1 . L = VIL, H = VIH, X = Don’t Care.
2. BW3 and BW4 are not applicable for the IDT71V67903.
3. Multiple bytes may be selected during the same cycle.
NOTES:
1 . L = VIL, H = VIH, X = Don’t Care.
2. Synchronous function pins must be biased appropriately to satisfy operation requirements.
NOTE:
1. Upon completion of the Burst sequence the counter wraps around to its initial state.
NOTE:
1. Upon completion of the Burst sequence the counter wraps around to its initial state.
Operation GW BWE BW
1
BW
2
BW
3
BW
4
Read HHXXXX
Read HLHHHH
Write all Bytes LXXXXX
Write all Bytes HLLLLL
Wr ite B yte 1
(3)
HLLHHH
Wr ite B yte 2
(3)
HLHLHH
Wr ite B yte 3
(3)
HLHHLH
Wr ite B yte 4
(3)
HLHHHL
5309 t bl 12
Operation
(2)
OE ZZ I/O Status Power
Re ad L L Data Out Active
Read H L High-Z Active
Wr i te X L Hi gh- Z – D ata In A c ti v e
Deselected X L High-Z Standby
Sleep Mode X H High-Z Sleep
5309 t bl 13
Sequence 1 Sequence 2 Sequence 3 Sequence 4
A1 A0 A1 A0 A1 A0 A1 A0
First Address 000110 11
Second Address 0 1 0 0 1 1 1 0
Third Address 1 0 1 1 0 0 0 1
Fourth Address
(1)
11100100
5309 t bl 14
Sequence 1 Sequence 2 Sequence 3 Sequence 4
A1 A0 A1 A0 A1 A0 A1 A0
First Address 000110 11
Second Address 0 1 1 0 1 1 0 0
Third Address 1 0 1 1 0 0 0 1
Fourth Address
(1)
11000110
5309 t bl 15
6.4212
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
AC Electrical Characteristics
(VDD = 3.3V ±5%, Commercial and Industrial Temperature Ranges)
7.5ns 8ns 8.5ns
Symbol Parameter Min.Max.Min.Max.Min.Max.Unit
Clock P aram eter
t
CYC
Clock Cycle Time 8.5
____
10
____
11.5
____
ns
t
CH
(1)
Clock High Pulse Width 3
____
4
____
4.5
____
ns
t
CL
(1)
Clock Low Pulse Width 3
____
4
____
4.5
____
ns
Output Parameters
t
CD
Clo ck Hig h to Valid Data
____
7.5
____
8
____
8.5 ns
t
CDC
Clo ck Hig h to Data Chang e 2
____
2
____
2
____
ns
t
CLZ
(2)
Clock High to Output Active 0
____
0
____
0
____
ns
t
CHZ
(2)
Clo ck Hig h to Data Hig h-Z 2 3. 5 2 3. 5 2 3. 5 n s
t
OE
Output Enable Access Time
____
3.5
____
3.5
____
3.5 ns
t
OLZ
(2)
Outp ut E nable Lo w to Outp ut Active 0
____
0
____
0
____
ns
t
OHZ
(2)
Output Enab le Hig h to Outp ut Hig h-Z
____
3.5
____
3.5
____
3.5 ns
Set Up Ti mes
t
SA
Address Setup Time 1.5
____
2
____
2
____
ns
t
SS
Address Status Setup Time 1.5
____
2
____
2
____
ns
t
SD
Data In Se tup Ti me 1. 5
____
2
____
2
____
ns
t
SW
Write Setup Time 1.5
____
2
____
2
____
ns
t
SAV
Address Advance Setup Time 1.5
____
2
____
2
____
ns
t
SC
Chip Enable/Select Setup Time 1.5
____
2
____
2
____
ns
Ho ld T i m es
t
HA
Address Hold Time 0.5
____
0.5
____
0.5
____
ns
t
HS
Ad d re ss Status Hold Time 0.5
____
0.5
____
0.5
____
ns
t
HD
Data In Ho ld Time 0.5
____
0.5
____
0.5
____
ns
t
HW
Write Ho ld Time 0. 5
____
0.5
____
0.5
____
ns
t
HAV
Address Advance Hold Time 0.5
____
0.5
____
0.5
____
ns
t
HC
Chip Enable/Select Hold Time 0.5
____
0.5
____
0.5
____
ns
Sleep Mode and Configuration Parameters
t
ZZPW
ZZ Pulse Width 100
____
100
____
100
____
ns
t
ZZR
(3)
ZZ Recovery Time 100
____
100
____
100
____
ns
t
CFG
(4)
Configuration Set-up Time 34
____
40
____
50
____
ns
5309 tbl 16
NOTES:
1. Measured as HIGH above VIH and LOW below VIL.
2. Transition is measured ±200mV from steady-state.
3. Device must be deselected when powered-up from sleep mode.
4. tCFG is the minimum time required to configure the device based on the LBO input. LBO is a static input and must not change during normal operation.
6.42
13
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
NOTES:
1. O1 (Ax) represents the first output from the external address Ax. O1 (Ay) represents the first output from the external address Ay; O2 (Ay) represents the next output data in the burst sequence of the base
address Ay, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input.
2. ZZ input is LOW and LBO is Don't Care for this cycle.
3. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
Timing Waveform of Flow-Through Read Cycle (1,2)
t
CHZ
t
SA
t
SC
t
HS
G
W,BWE,BWx
t
SW
t
CL
t
SAV
t
HW
t
HAV
CLK
ADSP
ADSC
(1)
ADDRESS
t
CYC
t
CH
t
HA
t
HC
t
OE
t
OHZ
OEt
CD
t
OLZ
O1(Ax)
DATA
OUT
t
CDC
O1(Ay)O2(Ay)
O2(Ay)
ADV
CE,CS
1
(Note3)
Flow-through
Read
BurstFlow-throughRead
Output
Disabled
AxAy
t
SS
O1(Ay)
O4(Ay)
O3(Ay)
(Burstwrapsaround
toitsinitialstate)
5309drw06
ADVHIGHsuspendsburst
,
6.4214
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
O1(Az)
CLK
ADSP
ADDRESS
GW
ADV
OE
DATA
OUT
t
CYC
t
CH
t
CL
t
HA
t
SW
t
HW
t
CLZ
AxAyAz
t
HS
I1(Ay)
t
SD
t
HD
t
OLZ
t
CD
t
CDC
DATA
IN
(2)
t
OE
O1(Az)
SingleReadFlow-throughBurstRead
Write
t
OHZ
t
SS
t
SA
O3(Az)
O2(Az)O4(Az)
O1(Ax)
5309drw07
t
CD
,
NOTES:
1. Device is selected through entire cycle; CE and CS1 are LOW, CS0 is HIGH.
2. ZZ input is LOW and LBO is Don't Care for this cycle.
3. O1 (Ax) represents the first output from the external address Ax. I1 (Ay) represents the first input from the external address Ay; O1 (Az) represents the first output from the external address Az; O2 (Az) represents
the next output data in the burst sequence of the base address Az, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input.
Timing Waveform of Combined Flow-Through Read and Write Cycles (1,2,3)
6.42
15
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Timing Waveform of Write Cyc le No. 1 - GW Controlled (1,2,3)
A
DDRESS
CLK
ADSP
ADSC
t
CYC
t
SS
t
HS
t
CH
t
CL
t
HA
t
SA
AxAyAz
ADV
DATA
OUT
OE
t
HC
t
SD
I1(Ax)I1(Az)
I2(Ay)
tHD
t
OHZ
DATA
IN
t
HAV
O4(Aw)
CE,CS
1
t
HW
GW
t
SW
(Note3)
I2(Az)I3(Az)
I4(Ay)
I3(Ay)
I2(Ay)
t
SAV
(ADVsuspendsburst)
I1(Ay)
t
SC
(1)
(2)
O3(Aw)
5309drw08
GWisignoredwhenADSPinitiatesacycleandissampledonthenextcyclerisingedge
,
NOTES:
1. ZZ input is LOW, BWE is HIGH and LBO is Don't Care for this cycle.
2. O4 (Aw) represents the final output data in the burst sequence of the base address Aw. I1 (Ax) represents the first input from the external address Ax. I1 (Ay) represents the first input from the external
address Ay; I2 (Ay) represents the next input data in the burst sequence of the base address Ay, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the
LBO input. In the case of input I2 (Ay) this data is valid for two cycles because ADV is high and has suspended the burst.
3. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
6.4216
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Timing Wa v eform of Write Cyc le No. 2 - Byte Controlled (1,2,3)
A
DDRESS
CLK
ADSP
ADSC
t
CYC
t
SS
t
HS
t
CH
t
CL
t
HA
t
SA
AxAy
t
HW
BWx
ADV
DATA
OUT
OE
t
HC
t
SD
Single
WriteBurstWrite
I1(Ax)I2(Ay)I2(Ay)I2(Az)
tHD
Burst
ReadExtended
BurstWrite
t
OHZ
DATA
IN
t
SAV
t
SW
O4(Aw)
CE,CS
1
t
HW
BWE
t
SW
(Note3)
I1(Az)
Az
I4(Ay)
I1(Ay)I4(Ay)
I3(Ay)
t
SC
BWEisignoredwhenADSPinitiatesacycleandissampledonthenextcyclerisingedge
BWxisignoredwhenADSPinitiatesacycleandissampledonthenextclockrisingedge
I3(Az)
O3(Aw)
5309drw09
(ADVHIGHsuspendsburst)
,
NOTES:
1. ZZ input is LOW, GW is HIGH and LBO is Don't Care for this cycle.
2 . O4 (Aw) represents the final output data in the burst sequence of the base address Aw. I1 (Ax) represents the first input from the external address Ax. I1 (Ay) represents the first input from the external address
Ay; I2 (Ay) represents the next input data in the burst sequence of the base address Ay, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input.
In the case of input I2 (Ay) this data is valid for two cycles because ADV is high and has suspended the burst.
3. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
6.42
17
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
t
CYC
t
SS
t
CL
t
CH
t
HA
t
SA
t
SC
t
HC
t
OE
t
OLZ
t
HS
CLK
ADSP
ADSC
A
DDRESS
GW
CE,CS
1
ADV
DATA
OUT
OE
ZZ
SingleReadSnoozeMode
tZZPW
5309drw13
O1(Ax)
Ax
(Note4)
tZZR
Az
,
NOTES:
1. Device must power up in deselected Mode.
2. LBO is Don't Care for this cycle.
3. It is not necessary to retain the state of the input registers throughout the Power-down cycle.
4. CS0 timing transitions are identical but inverted to the CE and CS1 signaals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
Timing Wav eform of Sleep (ZZ) and Power-Down Modes (1,2,3)
6.4218
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
NOTES:
1. ZZ input is LOW, ADV is HIGH and LBO is Don't Care for this cycle.
2. (Ax) represents the data for address Ax, etc.
3. For read cycles, ADSP and ADSC function identically and are therefore interchangable.
Non-Burst Read Cycle Timing Waveform
CLK
ADSP
GW,BWE,BWx
CE,CS
1
CS
0
ADDRESS
ADSC
DATA
OUT
OE
Av Aw Ax Ay Az
(Av) (Aw) (Ax) (Ay)
5309 drw 10
,
Non-Burst Write Cycle Timing Waveform
CLK
ADSP
GW
CE,CS
1
CS
0
ADDRESS
ADSC
DATA
IN
Av Aw Ax AzAy
(Av) (Aw) (Ax) (Az)(Ay)
5309 drw 11
,
NOTES:
1. ZZ input is LOW, ADV and OE are HIGH, and LBO is Don't Care for this cycle.
2. (Ax) represents the data for address Ax, etc.
3. Although only GW writes are shown, the functionality of BWE and BWx together is the same as GW.
4. For write cycles, ADSP and ADSC have different limitations.
6.42
19
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Ordering Information
100-Pin Plastic Thin Quad Flatpack (TQFP)
119 Ball Grid Array (BGA)
165 fine pitch Ball Grid Array (fBGA)
S
Power
X
Speed
XX
Package
PF
BG
BQ
XXXX
75
80
85
Access Time in Tenths of Nanoseconds
5309 drw 12
Device
Type
71V67703
71V67903
256K x 36 Flow-Through Burst Synchronous SRAM
512K x 18 Flow-Through Burst Synchronous SRAM
,
X
Process/
Temperature
Range
Commercial (0°C to +70°C)
Industrial (-40°C to +85°C)
Blank
I
X
Green
G
Tube or Tray
Tape and Reel
Blank
8
X
6.4220
IDT71V67703, IDT71V67903, 256K x 36, 512K x 18, 3.3V Synchronous SRAMS with
3.3V I/O, Flow-Through Outputs, Single Cycle Deselect Commercial and Industrial Temperature Ranges
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
Datasheet Document History
12/31/99 Created Datasheet from 71V677 and 71V679 Datasheets
For 2.5V I/O offering, see 71V67702 AND 71V67902 Datasheets.
04/26/00 Pg. 4 Add capacitance for BGA package; Insert clarification note to Absolute Max Ratings and Recommended
Operating Temperature tables.
Pg. 7 Replace Pin U6 with TRST pin in BGA pin configuration; Add pin description note in pinout
Pg. 18 Inserted 100 pin TQFP Package Diagram Outline
05/24/00 Pg. 1,4,8,21 Add new package offering, 13 x 15 fBGA
22
Pg. 5,6,7,8 Correct note 2 on BGA and TQFP pin configuration
Pg. 20 Correction in the 119 BGA Package Diagram Outline
07/12/00 Pg. 5,6,8 Remove note from TQFP and BQ165 pinouts
Pg. 7 Add/Remove note from BG119 pinout
Pg. 20 Update BG 119 pinout
12/18/00 Pg. 9 Updated ISB2 levels for 7.5-8.5ns.
10/29/01 Pg. 1,2 Remove JTAG pins
Pg. 7 Changed U2-U6 pins to DNU.
Pg. 8 Changed P5,P7,R5 & R7 to DNU pins.
Pg. 9 Raised specs by 10mA on 7.5ns, 8ns and 8.5ns.
10/22/02 Pg. 1-23 Changed datasheet from Advanced to Final Release.
Pg. 4,9,12, Added I temp to datasheet.
22
04/15/03 Pg. 4 Updated 165 fBGA table from TBD to 7.
12/20/03 Pg. 7 Updated 119BGS pin configurations- reordered I/O signals on P6, P7 (128K x 36) and P7, N6, L6, K7,
H6, G7, F6, E7, D6 (256K x 18).
02/20/09 Pg.22 Removed "IDT" from the orderable part number
11/19/14 Pg.1 & 20 Added green parts available note to Features & to Ordering Information
Pg. 1-3 Moved the FBD, the pin description and pin definition tables to pages 1 - 3 respectively to
align the datasheet reading flow to that of our other established datasheets
Pg. 20 Added tape & reel to ordering information
Pg. 19-21 Removed three Package Diagrm Outlines. from this datasheet. Please see idt.com for Package Diagrm
Outlines specific to these devices.
CORPORATE HEADQUARTERS for SALES: for Tech Support:
6024 Silver Creek Valley Road 800-345-7015 or sramhelp@idt.com
San Jose, CA 95138 408-284-8200 408-284-4532
fax: 408-284-2775
www.idt.com