CY74FCT163501
CY74FCT163H501
Maximum Ratings[6, 7]
Pin Description
(Above which the useful life may be impaired. For user
guidelines, not tested.)
Name
Description
OEAB
OEBA
LEAB
LEBA
A-to-B Output Enable Input
Storage Temperature .....................................−55°C to +125°C
B-to-A Output Enable Input (Active LOW)
A-to-B Latch Enable Input
Ambient Temperature with
Power Applied..................................................−55°C to +125°C
B-to-A Latch Enable Input
DC Input Voltage .................................................−0.5V to +7.0V
DC Output Voltage ..............................................−0.5V to +7.0V
CLKAB A-to-B Clock Input
CLKBA B-to-A Clock Input
DC Output Current
(Maximum Sink Current/Pin) ...........................−60 to +120 mA
A
A-to-B Data Inputs or B-to-A Three-State
Outputs[1]
Power Dissipation..........................................................1.0W
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
B
B-to-A Data Inputs or A-to-B Three-State
Outputs[1]
Operating Range
Function Table[2, 3]
Ambient
Range
Industrial
Temperature
VCC
Inputs
Outputs
B
−40°C to +85°C
2.7V to 3.6V
OEAB
LEAB
CLKAB
A
L
H
H
H
X
H
H
L
X
X
X
X
L
Z
L
H
L
H
L
H
L
H
H
H
H
L
L
L
X
X
B[4]
B[5]
H
1. On the 74FCT163H501 these pins have bus hold.
2. A-to-B data flow is shown. B-to-A data flow is similar but uses OEBA, LEBA, and CLKBA.
3. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High-impedance
= LOW-to-HIGH Transition
4. Output level before the indicated steady-state input conditions were established.
5. Output level before the indicated steady-state input conditions were established, provided that CLKAB was HIGH before LEAB went LOW.
6. Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are over the operating free-air temperature range.
7. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.
2