PI74FCT861T/863T/864T
BUS TRANSCEIVERS
1
PS2026A 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 FASTTM
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: 40C to +85C
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
2
PS2026A 03/11/96
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Pin Name
Description
R
N
Receive Inputs/Outputs
T
N
Transmit Inputs/Outputs
OER
N
Output Enable Receive Mode
OET
N
Output Enable Transmit Mode
GND
Ground
V
CC
Power
Product Pin Description
PI74FCT861T 10-Bit Product Configuration
Inputs
Outputs
Function
OET
N
OER
N
R
N
T
N
R
N
T
N
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
OET
N
OER
N
R
N
T
N
R
N
T
N
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
3
PS2026A 03/11/96
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .................................................................... 65C to +150C
Ambient Temperature with Power Applied .....................................-40C to +85C
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, T
A
= 40C to +85C, V
CC
= 5V 5%)
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
V
OH
Output HIGH Voltage
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OH
= 15.0 mA
2.4
3.0
V
V
OL
Output LOW Current
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OL
= 48 mA
0.3
0.50
V
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.8
V
I
IH
Input HIGH Current
V
CC
= Max.
V
IN
= V
CC
1
A
I
IL
Input LOW Current
V
CC
= Max.
V
IN
= GND
1
A
I
OZH
High Impedance
V
CC
= Max.
V
OUT
= 2.7V
1
A
I
OZL
Output Current
V
OUT
= 0.5V
1
A
I
I
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
(Max.)
20
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18 mA
0.7
1.2
V
I
OS
Short Circuit Current
V
CC
= Max.
(3)
, V
OUT
= GND
60
120
mA
I
OFF
Power Down Disable
V
CC
= GND, V
OUT
= 4.5V
--
--
100
A
V
H
Input Hysteresis
200
mV
Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(4)
Description
Test Conditions
Typ
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
6
10
pF
C
OUT
Output Capacitance
V
OUT
= 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, +25C 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
4
PS2026A 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, +25C ambient.
3. Per TTL driven input (V
IN
= 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. I
C
=I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
I
CC
D
H
N
T
+ I
CCD
(f
CP
/2 + f
I
N
I
)
I
CC
= Quiescent Current
I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
I
= Input Frequency
N
I
= Number of Inputs at f
I
All currents are in milliamps and all frequencies are in megahertz.
Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
I
CC
Quiescent Power
V
CC
= Max.
V
IN
= GND
0.1
500
A
Supply Current
or V
CC
I
CC
Supply Current per
V
CC
= Max.
V
IN
= 3.4V
(3)
0.5
2.0
mA
Input @ TTL HIGH
I
CCD
Supply Current per
V
CC
= Max.,
V
IN
= V
CC
0.15
0.25
mA/
Input per MHz
(4)
Outputs Open
V
IN
= GND
MHz
OE = GND;
One Input Toggling
50% Duty Cycle
I
C
Total Power Supply
V
CC
= Max.,
V
IN
= V
CC
1.5
3.5
(5)
mA
Current
(6)
Outputs Open
V
IN
= GND
f
CP
= 10 MH
Z
50% Duty Cycle
V
IN
= 3.4V
1.8
4.5
(5)
OE = GND;
V
IN
= GND
f
I
= 5 MH
Z
One Bit Toggling
V
CC
= Max.,
V
IN
= V
CC
3.0
6.0
(5)
Outputs Open
V
IN
= GND
f
CP
= 10 MH
Z
50% Duty Cycle
V
IN
= 3.4V
5.0
14.0
(5)
OE = GND;
V
IN
= GND
Eight Bits Toggling
f
I
= 2.5 MH
Z
50% Duty Cycle
PI74FCT861T/863T/864T
BUS TRANSCEIVERS
5
PS2026A 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
= 500
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
= 500
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
= 500
OER to R
N
C
L
= 300 pF
(3)
1.5
20.0
1.5
15.0
1.5
13.0
ns
R
L
= 500
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
= 500
OER to R
N
C
L
= 5 pF
(3)
1.5
10.0
1.5
7.0
1.5
6.0
ns
R
L
= 500
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
= 500
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
= 500
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
= 500
OER to R
N
C
L
= 300 pF
(3)
1.5
20.0
1.5
15.0
1.5
13.0
ns
R
L
= 500
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
= 500
OER to R
N
C
L
= 5 pF
(3)
1.5
10.0
1.5
7.0
1.5
6.0
ns
R
L
= 500
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
6
PS2026A 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
= 500
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
= 500
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
= 500
OER to R
N
C
L
= 300 pF
(3)
1.5
20.0
1.5
15.0
1.5
13.0
ns
R
L
= 500
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
= 500
OER to R
N
C
L
= 5 pF
(3)
1.5
10.0
1.5
7.0
1.5
6.0
ns
R
L
= 500
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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