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MC74LCX257

Part Number	MC74LCX257
Manufacturer	Motorola
Description	Low-Voltage CMOS Quad 2-Input Multiplexer
Published	Feb 5, 2006
Detailed Description	MOTOROLA SEMICONDUCTOR TECHNICAL DATA Product Preview Low-Voltage CMOS Quad 2-Input Multiplexer With 5V-Tolerant Inpu...
Datasheet	MC74LCX257 PDF File

Overview

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Product Preview Low-Voltage CMOS Quad 2-Input Multiplexer With 5V-Tolerant Inputs and Outputs (3-State, Non-Inverting) The MC74LCX257 is a high performance, quad 2–input multiplexer with 3–state outputs operating from a 2.
7 to 3.
6V supply.
High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance.
A VI specification of 5.
5V allows MC74LCX257 inputs to be safely driven from 5V devices.
Four bits of data from two sources can be selected using the Select input.
The four outputs present the selected data in the true (non–inverted) form.
The outputs may be switched to a high impedance state by placing a logic HIGH on the Output Enable (OE) input.
Current drive capability is 24mA at the outputs.
MC74LCX257 LOW–VOLTAGE CMOS QUAD 2–INPUT MULTIPLEXER 16 1 D SUFFIX PLASTIC SOIC CASE 751B–05 • • • • • • • • Designed for 2.
7 to 3.
6V VCC Operation 5V Tolerant — Interface Capability With 5V TTL Logic Supports Live Insertion and Withdrawal IOFF Specification Guarantees High Impedance When VCC = 0V LVTTL Compatible LVCMOS Compatible 24mA Balanced Output Sink and Source Capability Near Zero Static Supply Current in All Three Logic States (10µA) Substantially Reduces System Power Requirements 16 1 16 1 M SUFFIX PLASTIC SOIC EIAJ CASE 966–01 SD SUFFIX PLASTIC SSOP CASE 940B–03 • Latchup Performance Exceeds 500mA • ESD Performance: Human Body Model >2000V; Machine Model >200V 16 1 DT SUFFIX PLASTIC TSSOP CASE 948F–01 Pinout: 16–Lead Plastic Package (Top View) VCC 16 OE 15 I0c 14 I1c 13 Zc 12 I0d 11 I1d 10 Zd 9 PIN NAMES Pins I0n I1n OE S Zn Function Source 0 Data Inputs Source 1 Data Inputs Output Enable Input Select Input Outputs 1 S 2 I0a 3 I1a 4 Za 5 I0b 6 I1b 7 Zb 8 GND This document contains information on a product under development.
Motorola reserves the right to change or discontinue this product without notice.
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