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 Compatible D Provide Bus Interface From Multiple Sources in High-Performance Systems D Buffered Inputs and Outputs SN54HCT257 .
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J PACKAGE SN74HCT257 .
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D OR N PACKAGE (TOP VIEW) SN54HCT257 .
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FK PACKAGE (TOP VIEW) OE VCC NC A/B 1A A/B 1 1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7 GND 8 1...

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