SN54HCT257
SN54HCT257 is QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER manufactured by Texas Instruments.
SN54HCT257, SN74HCT257 QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS
WITH 3ĆSTATE OUTPUTS
SCLS072D
- NOVEMBER 1988
- REVISED SEPTEMBER 2003
D Operating Voltage Range of 4.5 V to 5.5 V D High-Current 3-State Outputs Interface
Directly With System Bus
D Typical tpd = 17 ns D Low Power Consumption, 80-µA Max ICC D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max D Inputs Are TTL-Voltage patible D Provide Bus Interface From Multiple
Sources in High-Performance Systems
D Buffered Inputs and Outputs
SN54HCT257 . . . J PACKAGE SN74HCT257 . . . D OR N PACKAGE
(TOP VIEW)
SN54HCT257 . . . FK PACKAGE (TOP VIEW)
A/B
1A
A/B 1 1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7 GND...
