CY54FCT543T Datasheet, PDF (2/8 Pages) Cypress Semiconductor – 8-Bit Latched Registered Transceiver

CY54/74FCT543T
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]}
CEAB
H
X
X
L
L
Inputs
LEAB
X
H
X
L
H
OEAB
X
X
H
L
L
Latch
A-to-B^[3]
Storing
Storing
X
Transpar-
ent
Storing
Outputs
B
High Z
X
High Z
Current A Inputs
Previous A Inputs
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)
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%
Notes:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care.
2. A-to-B data flow shown: B-to-A flow control is the same, except using CEBA, LEBA, and OEBA.
3. Before LEAB LOW-to-HIGH Transition.
4. Unless otherwise noted, these limits are over the operating free-air temperature range.
5. Unused inputs must always be connected to an appropriate logic voltage level, preferably either V_CC or ground.
6. T_A is the “instant on” case temperature.
2