October 1987

Revised January 1999

© 1999 Fairchild Semiconductor Corporation

DS005882.prf

www.fairchildsemi.com

MM74C42

BCD-to-Decimal Decoder

General Description

The MM74C42 one-of-ten decoder is a monolithic comple-

mentary MOS (CMOS) integrated circuit constructed with

N- and P-channel enhancement transistors. This decoder

produces a logical “0” at the output corresponding to a four

bit binary input from zero to nine, and a logical “1” at the

other outputs. For binary inputs from ten to fifteen all out-

puts are logical “1”.

Features

s Supply voltage range:

3V to 15V

s Tenth power TTL compatible: drive 2 LPTTL loads

s Low power: 50 nW (typ.)

Applications

• Automotive

• Data terminals

• Instrumentation

• Medical electronics

• Alarm systems

• Industrial electronics

• Remote metering

• Computers

Ordering Code:

Connection Diagram

Pin Assignments for DIP

Top View

Order Number

Package Number

Package Description

MM74C42N

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide