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74AC11257 Datasheet QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER

Manufacturer: Texas Instruments

General Description

/ordering information DB, DW, N, OR PW PACKAGE (TOP VIEW) A/B 1Y 2Y GND GND GND GND 3Y 4Y OE 1 2 3 4 5 6 7 8 9 10 20 1A 19 1B 18 2A 17 2B 16 VCC 15 VCC 14 3A 13 3B 12 4A 11 4B This device is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems.

The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic level.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor;

Overview

74AC11257 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS SCAS049C − MARCH 1989 − REVISED MAY 2004 D 3-State Outputs Interface Directly With System Bus D Flow-Through Architecture Optimizes PCB.