MC74LCX257 Datasheet, PDF (1/8 Pages) Motorola, Inc – Low-Voltage CMOS Quad 2-Input Multiplexer

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Product Preview
Low-Voltage CMOS Quad
2-Input Multiplexer
With 5V-Tolerant Inputs and Outputs
(3-State, Non-Inverting)
MC74LCX257
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.
• 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
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
Pinout: 16–Lead Plastic Package
(Top View)
VCC OE I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
12345678
S I0a I1a Za I0b I1b Zb GND
LOW–VOLTAGE CMOS
QUAD 2–INPUT MULTIPLEXER
16
1
16
1
16
1
16
1
D SUFFIX
PLASTIC SOIC
CASE 751B–05
M SUFFIX
PLASTIC SOIC EIAJ
CASE 966–01
SD SUFFIX
PLASTIC SSOP
CASE 940B–03
DT SUFFIX
PLASTIC TSSOP
CASE 948F–01
PIN NAMES
Pins
Function
I0n
Source 0 Data Inputs
I1n
Source 1 Data Inputs
OE
Output Enable Input
S
Select Input
Zn
Outputs
This document contains information on a product under development. Motorola reserves the right to
change or discontinue this product without notice.
11/96
© Motorola, Inc. 1996
1
REV 0.2