MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

1

REV 1

3/97

Low-Voltage CMOS Quad

2-Input Multiplexer

With 5V-Tolerant Inputs

(Non-Inverting)

The MC74LCX157 is a high performance, quad 2–input multiplexer

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 MC74LCX157 inputs to be safely driven from

5V devices.

Four bits of data from two sources can be selected using the Select

and Enable inputs. The four outputs present the selected data in the true

(non–inverted) form. The MC74LCX157 can also be used as a function

generator. Current drive capability is 24mA at the outputs.

Power Requirements

15

16

14

13

12

11

10

2

1

3

4

567

VCC

9

8

E

I0c

I1c

Zc

I0d

I1d

Zd

S

I0a

I1a

Za

I0b

I1b

Zb

GND

Figure 1. 16–Lead Pinout (Top View)

PIN NAMES

Function

Source 0 Data Inputs

Source 1 Data Inputs

Enable Input

Select Input

Outputs

Pins

I0n

I1n

E

S

Zn

MC74LCX157

LOW–VOLTAGE CMOS

QUAD 2–INPUT MULTIPLEXER

M SUFFIX

16–LEAD PLASTIC SOIC EIAJ PACKAGE

CASE 966–01

D SUFFIX

16–LEAD PLASTIC SOIC PACKAGE

CASE 751B–05

DT SUFFIX

16–LEAD PLASTIC TSSOP PACKAGE

CASE 948F–01

SD SUFFIX

16–LEAD PLASTIC SSOP PACKAGE

CASE 940B–03