TLF6530

June 1989

5485DM5485DM7485

4-Bit Magnitude Comparators

General Description

These 4-bit magnitude comparators perform comparison of

straight binary or BCD codes Three fully-decoded decisions

about two 4-bit words (A B) are made and are externally

available at three outputs These devices are fully expand-

able to any number of bits without external gates Words of

greater length may be compared by connecting compara-

stage handling less-significant bits are connected to the cor-

responding inputs of the next stage handling more-signifi-

cant bits The stage handling the least-significant bits must

cascading paths are implemented with only a two-gate-level

delay to reduce overall comparison times for long words

Features

Y

Typical power dissipation 275 mW

Y

Typical delay (4-bit words) 23 ns

Y

Alternate MilitaryAerospace device (5485) is available

Contact a National Semiconductor Sales OfficeDistrib-

utor for specifications

Connection Diagram

Dual-In-Line Package

TLF6530 – 1

Order Number 5485DMQB 5485FMQB DM5485J DM5485W or DM7485N

See NS Package Number J16A N16E or W16A

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A