PI74FCT861T/863T/864T
BUS TRANSCEIVERS
1PS2026A 03/11/96
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Product Description:
Pericom Semiconductor’s PI74FCT series of logic circuits are
produced in the Company’s advanced 0.8 micron CMOS
technology, achieving industry leading speed grades.
The PI74FCT860T series bus transceivers provide high-
performance bus interface buffering for wide data/address paths
carrying parity. They are designed for high-capacitance load drive
capability while providing bus loading at both inputs and outputs.
The PI74FCT861T is a 10-bit non-inverting bus transceiver.
The PI74FCT863T is a 9-bit non-inverting option of the
PI74FCT864T 9-bit inverting bus transceiver.
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Fast CMOS
Bus Transceivers
PI74FCT861T/863T/864T
PI74FCT861/863/864T Logic Block Diagram
Note: PI74FCT861T function is shown.
Product Features:
• PI74FCT861/863T/864T is pin compatible with bipolar FAST™
Series at a higher speed and lower power consumption
• TTL input and output levels
• Extremely low static power
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
– 24-pin 300 mil wide plastic DIP (P)
– 24-pin 150 mil wide plastic QSOP (Q)
– 24-pin 150 mil wide plastic TQSOP (R)
– 24-pin 300 mil wide plastic SOIC (S)
R
0
T
0
R
1
T
1
R
2
T
2
R
3
T
3
R
4
T
4
R
5
T
5
R
6
T
6
R
7
T
7
R
8
T
8
R
9
T
9
OET
OER
PI74FCT861T/863T/864T
BUS TRANSCEIVERS
2PS2026A 03/11/96
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Pin Name Description
RNReceive Inputs/Outputs
TNTransmit Inputs/Outputs
OERNOutput Enable Receive Mode
OETNOutput Enable Transmit Mode
GND Ground
VCC Power
Product Pin Description
PI74FCT861T 10-Bit Product Configuration
Inputs Outputs
Function OETNOERNRNTNRNTN
High-Z H H X X Z Z
Transmitting L H L N/A N/A L
Transmitting L H H N/A N/A H
Receiving H L N/A L L N/A
Receiving H L N/A H H N/A
PI74FCT861/863T (non-inverting) Truth Table(1)
1. H = High Voltage Level
L = Low Voltage Level
X = Don't Care
NA = Not Applicable
Z = High Impedance
PI74FCT863/864T 9-Bit Product Configuration
Inputs Outputs
Function OETNOERNRNTNRNTN
High-Z H H X X Z Z
Transmitting L H L N/A N/A H
Transmitting L H H N/A N/A L
Receiving H L N/A L H N/A
Receiving H L N/A H L N/A
1. H = High Voltage Level
L = Low Voltage Level
X = Don't Care
NA = Not Applicable
Z = High Impedance
PI74FCT864T (inverting) Truth Table(1)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OER
R
0
R
1
R
2
R
3
R
4
R
5
R
6
R
7
R
8
R
9
GND
Vcc
T
0
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
T
9
OET
24-PIN
P24
Q24
R24
S24
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OER
1
R
0
R
1
R
2
R
3
R
4
R
5
R
6
R
7
R
8
OER
2
GND
Vcc
T
0
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
OET
2
OET
1
24-PIN
P24
Q24
R24
S24
PI74FCT861T/863T/864T
BUS TRANSCEIVERS
3PS2026A 03/11/96
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature....................................................................–65°C to +150°C
Ambient Temperature with Power Applied .....................................-40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ..............–0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only)...........–0.5V to +7.0V
DC Input Voltage ............................................................................ –0.5V to +7.0V
DC Output Current..................................................................................... 120 mA
Power Dissipation ..........................................................................................0.5W
Note:
Stresses greater than those listed under
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.
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ± 5%)
Parameters Description Test Conditions(1) Min. Typ(2) Max. Units
VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –15.0 mA 2.4 3.0 V
VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 48 mA 0.3 0.50 V
VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V
VIL Input LOW Voltage Guaranteed Logic LOW Level 0.8 V
IIH Input HIGH Current VCC = Max. VIN = VCC 1µA
IIL Input LOW Current VCC = Max. VIN = GND –1 µA
IOZH High Impedance VCC = Max. VOUT = 2.7V 1 µA
IOZL Output Current VOUT = 0.5V –1 µA
IIInput HIGH Current VCC = Max., VIN = VCC (Max.) 20 µA
VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA –0.7 –1.2 V
IOS Short Circuit Current VCC = Max.(3), VOUT = GND –60 –120 mA
IOFF Power Down Disable VCC = GND, VOUT = 4.5V — — 100 µA
VHInput Hysteresis 200 mV
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4) Description Test Conditions Typ Max. Units
CIN Input Capacitance VIN = 0V 6 10 pF
COUT Output Capacitance VOUT = 0V 8 12 pF
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. This parameter is determined by device characterization but is not production tested.
PI74FCT861T/863T/864T
BUS TRANSCEIVERS
4PS2026A 03/11/96
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Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5. V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V); all other inputs at Vcc or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
6. IC =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
Power Supply Characteristics
Parameters Description Test Conditions(1) Min. Typ(2) Max. Units
ICC Quiescent Power VCC = Max. VIN = GND 0.1 500 µA
Supply Current or VCC
∆ICC Supply Current per VCC = Max. VIN = 3.4V(3) 0.5 2.0 mA
Input @ TTL HIGH
ICCD Supply Current per VCC = Max., VIN = VCC 0.15 0.25 mA/
Input per MHz(4) Outputs Open VIN = GND MHz
OE = GND;
One Input Toggling
50% Duty Cycle
ICTotal Power Supply VCC = Max., VIN = VCC 1.5 3.5(5) mA
Current(6) Outputs Open VIN = GND
fCP = 10 MHZ
50% Duty Cycle VIN = 3.4V 1.8 4.5(5)
OE = GND; VIN = GND
fI = 5 MHZ
One Bit Toggling
VCC = Max., VIN = VCC 3.0 6.0(5)
Outputs Open VIN = GND
fCP = 10 MHZ
50% Duty Cycle VIN = 3.4V 5.0 14.0(5)
OE = GND; VIN = GND
Eight Bits Toggling
fI = 2.5 MHZ
50% Duty Cycle
PI74FCT861T/863T/864T
BUS TRANSCEIVERS
5PS2026A 03/11/96
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PI74FCT861T (non-inverting) Switching Characteristics over Operating Range
861AT 861BT 861CT
Com. Com. Com.
Parameters Description Conditions
(1)
Min Max Min Max Min Max Unit
t
PLH
Propagation Delay C
L
= 50 pF 1.5 8.0 1.5 6.0 1.5 5.5 ns
t
PHL
R
N
to T
N
or R
L
= 500Ω
T
N
to R
N
C
L
= 300 pF
(3)
1.5 15.0 1.5 13.0 1.5 11.5 ns
R
L
= 500Ω
t
PZH
Output Enable Time C
L
= 50 pF 1.5 12.0 1.5 8.0 1.5 6.8 ns
t
PZL
OET to T
N
or R
L
= 500Ω
OER to R
N
C
L
= 300 pF
(3)
1.5 20.0 1.5 15.0 1.5 13.0 ns
R
L
= 500Ω
t
PHZ
Output Disable Time
(3)
C
L
= 50 pF 1.5 9.0 1.5 6.0 1.5 5.0 ns
t
PLZ
OET to T
N
or R
L
= 500Ω
OER to R
N
C
L
= 5 pF
(3)
1.5 10.0 1.5 7.0 1.5 6.0 ns
R
L
= 500Ω
PI74FCT863T (non-inverting) Switching Characteristics over Operating Range
863AT 863BT 863CT
Com. Com. Com.
Parameters Description Conditions
(1)
Min Max Min Max Min Max Unit
t
PLH
Propagation Delay C
L
= 50 pF 1.5 8.0 1.5 6.0 1.5 5.5 ns
t
PHL
R
N
to T
N
or R
L
= 500Ω
T
N
to R
N
C
L
= 300 pF
(3)
1.5 15.0 1.5 13.0 1.5 11.5 ns
R
L
= 500Ω
t
PZH
Output Enable Time C
L
= 50 pF 1.5 12.0 1.5 8.0 1.5 6.8 ns
t
PZL
OET to T
N
or R
L
= 500Ω
OER to R
N
C
L
= 300 pF
(3)
1.5 20.0 1.5 15.0 1.5 13.0 ns
R
L
= 500Ω
t
PHZ
Output Disable Time
(3)
C
L
= 50 pF 1.5 9.0 1.5 6.0 1.5 5.0 ns
t
PLZ
OET to T
N
or R
L
= 500Ω
OER to R
N
C
L
= 5 pF
(3)
1.5 10.0 1.5 7.0 1.5 6.0 ns
R
L
= 500Ω
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
PI74FCT861T/863T/864T
BUS TRANSCEIVERS
6PS2026A 03/11/96
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Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
PI74FCT864T (inverting) Switching Characteristics over Operating Range
864AT 864BT 864CT
Com. Com. Com.
Parameters Description Conditions
(1)
Min Max Min Max Min Max Unit
t
PLH
Propagation Delay C
L
= 50 pF 1.5 8.0 1.5 6.0 1.5 5.5 ns
t
PHL
R
N
to T
N
or R
L
= 500Ω
T
N
to R
N
C
L
= 300 pF
(3)
1.5 15.0 1.5 13.0 1.5 11.5 ns
R
L
= 500Ω
t
PZH
Output Enable Time C
L
= 50 pF 1.5 12.0 1.5 8.0 1.5 6.8 ns
t
PZL
OET to T
N
or R
L
= 500Ω
OER to R
N
C
L
= 300 pF
(3)
1.5 20.0 1.5 15.0 1.5 13.0 ns
R
L
= 500Ω
t
PHZ
Output Disable Time
(3)
C
L
= 50 pF 1.5 9.0 1.5 6.0 1.5 5.0 ns
t
PLZ
OET to T
N
or R
L
= 500Ω
OER to R
N
C
L
= 5 pF
(3)
1.5 10.0 1.5 7.0 1.5 6.0 ns
R
L
= 500Ω
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
