
CY54/74FCT543T
2
Maximum Ratings
[4, 5]
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................–65
°
C to +150
°
C
Ambient Temperature with
Power Applied.............................................–65
°
C to +135
°
C
Supply Voltage to Ground Potential............... –0.5V to +7.0V
DC Input Voltage ........................................... –0.5V to +7.0V
DC Output Voltage......................................... –0.5V to +7.0V
DC Output Current (Maximum Sink Current/Pin) ......120 mA
Power Dissipation..........................................................0.5W
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
Notes:
1.
2.
3.
4.
5.
6.
H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care.
A-to-B data flow shown: B-to-A flow control is the same, except using CEBA, LEBA, and OEBA.
Before LEAB LOW-to-HIGH Transition.
Unless otherwise noted, these limits are over the operating free-air temperature range.
Unused inputs must always be connected to an appropriate logic voltage level, preferably either V
CC
or ground.
T
A
is the “instant on” case temperature.
Pin Description
Name
OEAB
OEBA
CEAB
CEBA
LEAB
LEBA
A
B
Description
A-to-B Output Enable Input (Active LOW)
B-to-A Output Enable Input (Active LOW)
A-to-B Enable Input (Active LOW)
B-to-A Enable Input (Active LOW)
A-to-B Latch Enable Input (Active LOW)
B-to-A Latch Enable Input (Active LOW)
A-to-B Data Inputs or B-to-A Three-State Outputs
B-to-A Data Inputs or A-to-B Three-State Outputs
Function Table
[1, 2]
Inputs
LEAB
X
H
X
L
Latch
A-to-B
[3]
Storing
Storing
X
Transpar-
ent
Storing
Outputs
B
High Z
X
High Z
Current A Inputs
CEAB
H
X
X
L
OEAB
X
X
H
L
L
H
L
Previous A Inputs
Operating Range
Range
Commercial
Commercial
Military
[6]
Range
DT
T, AT, CT
All
Ambient
Temperature
0
°
C to +70
°
C
–40
°
C to +85
°
C
–55
°
C to +125
°
C
V
CC
5V
±
5%
5V
±
5%
5V
±
10%