INDUSTRIAL TEMPERATURE RANGE
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
1JULY 2000INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
© 2000 Integrated Device Technology, Inc. DSC-4704/3
FEATURES:
• 0.5 MICRON CMOS Technology
•VCCA = 2.3V to 3.6V
•VCCB = 3V to 5.5V
• CMOS power levels (0.4µµ
µµ
µ W typ. static)
• Rail-to-rail output swing for increased noise margin
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in SOIC, SSOP, QSOP, and TSSOP packages
FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Reduced system switching noise
IDT74LVCC3245A
DESCRIPTION:
The LVCC3245A is manufactured using advanced dual metal CMOS
technology. This 8-bit (octal) noninverting bus transceiver contains two
separate supply rails. The B port is designed to track VCCB, which accepts
voltages from 3V to 5.5V, and the A port is designed to track VCCA, which
operates at 2.3V to 3.6V. This allows for translation from a 3.3V to a 5V
system environment and vice-versa, or from a 2.5V to a 3.3V system
environment, and vice-versa.
This LVCC3245A is ideal for asynchronous communication between two
data buses (A and B). The device transmits data from A to B or from B to
A, depending on the logic level at the direction-control (DIR) input. The
output-enable (OE) input can be used to disable the device so the buses are
effectively isolated.
The LVCC3245A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
CMOS OCTAL BUS
TRANSCEIVER WITH ADJUSTABLE
OUTPUT VOLTAGE, 3-STATE OUT-
PUTS, 5 VOLT TOLERANT I/O
DIR
A1
A2
A3
A4
A5
A6
A7
A8
B8
B7
B6
B5
B4
B3
B2
B1
OE
2
3
4
5
6
7
8
9
10
14
15
16
17
18
19
20
21
22
2.3V to 3.6V Port
3V to 5.5V Port
INDUSTRIAL TEMPERATURE RANGE
2
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
PIN CONFIGURATION
SOIC/ SSOP/ QSOP/ TSSOP
TOP VIEW
Pin Names Description
OE Output Enable Input (Active LOW)
DIR Direction Control Input
Ax Port A Inputs or 3-State Outputs
Bx Port B Inputs or 3-State Outputs
NC No Internal Connection
PIN DESCRIPTION
NOTE:
1 . H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Inputs
OE DIR Outputs
L L Bus B Data to Bus A
L H Bus A Data to Bus B
H X High Z state
FUNCTION TABLE(1)
NOTE:
1. As applicable to the device type.
Symbol Parameter(1) Conditions Typ. Unit
CIN Input Capacitance VIN = 0V 4.5 pF
CI/O I/O Port Capacitance VIN = 0V 11 pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
ABSOLUTE MAXIMUM RATINGS
FOR VCCB OR VCCB(1)
Symbol Description Max Unit
VTERM Terminal Voltage with Respect to GND –0.5 to +6 V
TSTG Storage Temperature –65 to +150 °C
IOUT DC Output Current –50 to +50 mA
IIK Continuous Clamp Current, –50 mA
IOK VI < 0 or VO < 0
ICC Continuous Current through each ±10 0 mA
ISS VCC or GND
NOTE:
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
3
1
A1
20
19
18 B4
B3
B5
B1
B2
15 B7
B8
16
9
GND
10
A8
B6
23
22
24
21
17
DIR
5
6
A6
7
A4
A5
4A2
A3
8
A7
OE
13
14
11
GND 12
VCCB (3V to 5.5V)
NC
GND
(2.3V to 3.6V) VCCA
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
3
Symbol Parameter Test Conditions Min. Typ.(2) Max. Unit
VIH Input HIGH Voltage Level VOB ≤ 0.1V VCCA = 2.3V, VCCB = 3V 1.7 — — V
VOB ≥ VCCB - 0.1V VCCA = 2.7V to 3.6V 2 — —
VIL Input LOW Voltage Level VCCA = 2.3V, VCCB = 3V — — 0.7 V
VCCA = 2.7V to 3.6V — — 0.8
IIH Input Leakage Current VCCA = 3.6V VI = 0 to 5.5V — — ±1µA
IIL
IOZH High Impedance Output Current VCCA = 3.6V VO = VCCA or GND — — ±5µA
IOZL (3-State Output pins)
IOFF Input/Output Power Off Leakage VCCA = 0V, VIN or VO ≤ 5.5V — — ±50 µA
VHInput Hysteresis VCCA = 3.3V — 100 — mV
ICCL Quiescent Power Supply Current VCCA = 3.6V VIN = GND or VCC —— 50µA
ICCH
ICCZ
∆ICC Quiescent Power Supply Current One input at VCCA - 0.6, other inputs at VCCA or GND — — 500 µA
Variation
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (A PORT)
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = –40°C to +85°C, VCCA = 2.3V to 3.6V(1)
NOTES:
1. VCCB = 3V to 5.5V.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. This applies in the disabled state only.
Symbol Parameter Test Conditions Min. Typ.(2) Max. Unit
VIH Input HIGH Voltage Level VOA ≤ 0.1V VCCB = 3V to 3.6V 2 — — V
VOA ≥ VCCA - 0.1V VCCB = 5.5V 3.85 — —
VIL Input LOW Voltage Level VCCB = 3V to 3.6V — — 0.8 V
VCCB = 5.5V — — 1.65
IIH Input Leakage Current VCCB = 3.6V VI = 0 to 5.5V — — ±1µA
IIL
IOZH High Impedance Output Current VCCB = 3.6V VO = VCCB or GND — — ±5µA
IOZL (3-State Output pins)
IOFF Input/Output Power Off Leakage VCCB = 0V, VIN or VO ≤ 5.5V — — ±50 µA
VHInput Hysteresis VCCB = 3.3V — 100 — mV
ICCL Quiescent Power Supply Current VCCB = 3.6V VIN = GND or VCC —— 50µA
ICCH VCCB = 5.5V — — 80
ICCZ
∆ICC Quiescent Power Supply Current One input at VCCB - 2.1 other inputs at VCCB or GND — — 1. 5 mA
Variation
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (B PORT)
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = –40°C to +85°C, VCCB = 3V to 5.5V(1)
NOTES:
1. VCCA = 2.3V to 3.6V.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. This applies in the disabled state only.
INDUSTRIAL TEMPERATURE RANGE
4
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C, VCCB = 3V to 5.5V.
OUTPUT DRIVE CHARACTERISTICS, VCCA = 2.3V TO 3.6V (A PORT)
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C, VCCA = 2.3V to 3.6V.
OUTPUT DRIVE CHARACTERISTICS, VCCB = 3V TO 5.5V (B PORT)
OPERATING CHARACTERISTICS, TA = 25°C
VCCA = 3.3V, VCCB = 5V
Symbol Parameter Test Conditions Typical Unit
CPD Power Dissipation Capacitance per Transceiver Outputs enabled A to B CL = 0pF, f = 10Mhz 38 pF
CPD Power Dissipation Capacitance per Transceiver Outputs disabled B to A 36.5
Symbol Parameter Test Conditions(1) Min. Max. Unit
VOHA Output HIGH Voltage VCCA = 3V VCCB = 3V IOH = – 0.1mA 2.9 — V
(B port to A port) VCCA = 2.3V VCCB = 3V IOH = – 8mA 2 —
VCCA = 2.7V VCCB = 3V IOH = – 12mA 2.2 —
VCCA = 3V VCCB = 3V 2.4 —
VCCA = 3V VCCB = 3V IOH = – 24mA 2.2 —
VCCA = 2.7V VCCB = 4.5V 2 —
VOLA Output LOW Voltage VCCA = 3V VCCB = 3V IOL = 0.1mA — 0.1 V
(B port to A port) VCCA = 2.3V VCCB = 3V IOL = 8mA — 0 .6
VCCA = 2.7V VCCB = 3V IOL = 12mA — 0 .5
VCCA = 3V VCCB = 3V IOL = 24mA — 0. 5
VCCA = 2.7V VCCB = 4.5V — 0 . 5
Symbol Parameter Test Conditions(1) Min. Max. Unit
VOHB Output HIGH Voltage VCCB = 3V VCCA = 3V IOH = – 0.1mA 2.9 — V
(A port to B port) VCCB = 3V VCCA = 2.3V IOH = – 12mA 2.4 —
VCCB = 3V VCCA = 2.7V 2 . 4 —
VCCB = 3V VCCA = 3V IOH = – 24mA 2.2 —
VCCB = 4.5V VCCA = 2.7V 3 .2 —
VOLB Output LOW Voltage VCCB = 3V VCCA = 3V IOL = 0.1mA — 0.1 V
(A port to B port) VCCB = 3V VCCA = 2.3V IOL = 12mA — 0 .4
VCCB = 3V VCCA = 3V IOL = 24mA — 0. 5
VCCB = 4.5V VCCA = 3V — 0 .5
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
5
SWITCHING CHARACTERISTICS(1)
VCCA = 2.5V ± 0.2V VCCA = 2.7V to 3.6V
VCCB = 3.3V ± 0.3V VCCB = 5V ± 0.5V VCCB = 3.3V ± 0.3V
Symbol Parameter Min. Max. Min. Max. Min. Max. Unit
tPHL Propagation Delay 1 9.4 1 6 1 7.1 ns
tPLH Ax to Bx 1 9.1 1 5.3 1 7.2
tPHL Propagation Delay 1 11.2 1 5.8 1 6.4 ns
tPLH Bx to Ax 1 9.9 1 7 1 7.6
tPZL Output Enable Time 1 13 1 8.1 1 9.2 ns
tPLZ OE t o Bx 1 12.8 1 8.4 1 9.9
tPZL Output Enable Time 1 14.5 1 9.2 1 9.7 ns
tPLZ OE t o Ax 1 12.9 1 9.5 1 9.5
tPLZ Output Disable Time 1 7.1 1 5.5 1 6.6 ns
tPHZ OE to Ax 1 6.9 1 7.8 1 6.9
tPLZ Output Disable Time 1 8.8 1 7.3 1 7.5 ns
tPHZ OE to Bx 1 8.9 1 7 1 7.9
NOTE:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
INDUSTRIAL TEMPERATURE RANGE
6
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
tPLZ
tPZH tPHZ
0V
VOL+0.15V
VOH
VOL
VOH-0.15V
VCCA
tPZL
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2 X VCC
(see Note B)
Output
Waveform 2
S1 at GND
(
see Note B
)
VCC/2 VCC/2
VCC
0V
VCC/2
VCC/2
2 x VCC
GND
Open
CL = 30pF
(see Note A)
From Output
Under Test
S1
500Ω
500Ω
0V
Data
Input VCC/2 VCC/2
VCC
tSU tH
VCC/2
VCC
0V
Timing
Input
0V
Input
tPHL
tPLH
Output
VOH
VOL
VCC/2 VCC/2
VCC
VCC/2
VCC/2
0V
Input VCC/2 VCC/2
VCC
tW
LOAD CIRCUIT AND VOLTAGE WAVEFORMS
PARAMETER MEASUREMENT INFORMATION (A PORT)
Load Circuit
Voltage Waveforms Setup and Hold Times
Voltage Waveforms Propagation Delay Times Voltage Waveforms Enable and Disable Times
NOTES:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2ns; tR ≤ 2ns.
D. The outputs are measured one at a time with one transition per measurement.
Voltage Waveforms Pulse Duration
VCCA = 2.5V ± 0.2V and VCCB = 3.3V ± 0.3V
TEST CONDITIONS
TEST S1
tPD Open
tPLZ / tPZL 2 x VCC
tPHZ / tPZH GND
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
7
tPLZ
tPZH tPHZ
0V
VOL+0.15V
VOH
VOL
VOH-0.15V
VCCA
tPZL
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2 X VCC
(see Note B)
Output
Waveform 2
S1 at GND
(
see Note B
)
VCC/2 VCC/2
VCC
0V
VCC/2
VCC/2
2 x VCC
GND
Open
CL = 50pF
(see Note A)
From Output
Under Test
S1
500Ω
500Ω
0V
Data
Input VCC/2 VCC/2
VCC
tSU tH
VCC/2
VCC
0V
Timing
Input
0V
Input
tPHL
tPLH
Output
VOH
VOL
VCC/2 VCC/2
VCC
VCC/2
VCC/2
0V
Input VCC/2 VCC/2
VCC
tW
Load Circuit
Voltage Waveforms Setup and Hold Times
Voltage Waveforms Propagation Delay Times Voltage Waveforms Enable and Disable Times
LOAD CIRCUIT AND VOLTAGE WAVEFORMS
PARAMETER MEASUREMENT INFORMATION (B PORT)
NOTES:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2ns; tR ≤ 2ns.
D. The outputs are measured one at a time with one transition per measurement.
TEST CONDITIONS
TEST S1
tPD Open
tPLZ / tPZL 2 x VCC
tPHZ / tPZH GND
VCCA = 2.5V ± 0.2V and VCCB = 3.3V ± 0.3V
Voltage Waveforms Pulse Duration
INDUSTRIAL TEMPERATURE RANGE
8
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
tPLZ
tPZH tPHZ
0V
VOL+0.3V
VOH
tPZL
VOL
VOH-0.3V
1.5V
2.7V
0V
1.5V
Output
Control
VCC
Output
Waveform 1
S1 at 2 X VCC
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
2 x VCC
GND
Open
CL = 50pF
(see Note A)
From Output
Under Test
S1
500Ω
500Ω
0V
B-Port
Input
tW
0V
Input
tPHL
tPLH
B-Port
Output
VOH
VOL
50% VCC 50% VCC
VCC
VCC
1.5V 1.5V
50% VCC 50% VCC
50% VCC
50% VCC
LOAD CIRCUIT AND VOLTAGE WAVEFORMS
PARAMETER MEASUREMENT INFORMATION (A PORT)
Load Circuit
Voltage Waveforms Propagation Delay Times
Noninverting Outputs
Voltage Waveforms Enable and Disable Times
Low- and High-Level Enabling
NOTES:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns.
D. The outputs are measured one at a time with one transition per measurement.
Voltage Waveforms Pulse Duration
VCCA = 3.6V and VCCB = 5.5V
TEST CONDITIONS
TEST S1
tPLH / tPHL Open
tPLZ / tPZL 2 x VCC
tPHZ / tPZH GND
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
9
tPLZ
tPZH tPHZ
0V
VOL+0.3V
VOH
tPZL
VOL
VOH-0.3V
1.5V
2.7V
0V
1.5V
Output
Control
VCC
Output
Waveform 1
S1 at 2 X VCC
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
2 x VCC
GND
Open
CL = 50pF
(see Note A)
From Output
Under Test
S1
500Ω
500Ω
0V
B-Port
Input
tW
0V
Input
tPHL
tPLH
A-Port
Output
VOH
VOL
50% VCC 50% VCC
VCCB
VCCB
50% VCC 50% VCC
1.5V 1.5V
1.5V
1.5V
Load Circuit
LOAD CIRCUIT AND VOLTAGE WAVEFORMS
PARAMETER MEASUREMENT INFORMATION (B PORT)
NOTES:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns.
D. The outputs are measured one at a time with one transition per measurement.
TEST CONDITIONS
TEST S1
tPLH / tPHL Open
tPLZ / tPZL 2 x VCC
tPHZ / tPZH GND
VCCA = 3.6V and VCCB = 5.5V
Voltage Waveforms Propagation Delay Times
Noninverting Outputs
Voltage Waveforms Enable and Disable Times
Low- and High-Level Enabling
Voltage Waveforms Pulse Duration
INDUSTRIAL TEMPERATURE RANGE
10
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
tPLZ
tPZH tPHZ
0V
VOL+0.3V
VOH
tPZL
VOL
VOH-0.3V
1.5V
2.7V
0V
1.5V
Output
Control
3.5V
Output
Waveform 1
S1 at 7V
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
7V
GND
Open
CL = 50pF
(see Note A)
From Output
Under Test
S1
500Ω
500Ω
0V
Input
tW
0V
Input
tPHL
tPLH
B-Port
Output
VOH
VOL
1.5V 1.5V
2.7V
2.7V
1.5V 1.5V
1.5V 1.5V
1.5V
1.5V
Load Circuit
LOAD CIRCUIT AND VOLTAGE WAVEFORMS
PARAMETER MEASUREMENT INFORMATION (A AND B PORT)
NOTES:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10MHz; Zo = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns.
D. The outputs are measured one at a time with one transition per measurement.
TEST CONDITIONS
TEST S1
tPLH / tPHL Open
tPLZ / tPZL 7V
tPHZ / tPZH GND
VCCA = and VCCB = 3.6V
Voltage Waveforms Propagation Delay Times
Noninverting Outputs
Voltage Waveforms Enable and Disable Times
Low- and High-Level Enabling
Voltage Waveforms Pulse Duration
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCC3245A
CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
11
IDT XX LVC XXXX XX
PackageDevice Type
Temp. Range
SO
PY
Q
PG
PGG
74
Small Outline IC (gull wing)
Shrink Small Outline Package
Quarter Size Small Outline Package
Thin Shrink Small Outline Package
TSSOP - Green
Octal Bus Transceiver with Adjustable Output Voltage,
3-State Outputs, ±24mA
–40°C to +85°C
X
Bus-Hold
C3245A
No Bus-Hold
Blank
ORDERING INFORMATION
CORPORATE HEADQUARTERS for SALES: for Tech Support:
2975 Stender Way 800-345-7015 or 408-727-6116 logichelp@idt.com
Santa Clara, CA 95054 fax: 408-492-8674 (408) 654-6459
www.idt.com
