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DM5485W

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DM5485W 数据手册

June 1989

5485/DM5485/DM7485

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-

have a high-level voltage applied to the A

B input. The

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

delay to reduce overall comparison times for long words.

Features

Typical power dissipation 275 mW

tors in cascade. The A B, A B, and A

B outputs of a

Typical delay (4-bit words) 23 ns

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

Alternate Military/Aerospace device (5485) is available.

Contact a National Semiconductor Sales Office/Distrib-

utor for specifications.

Connection Diagram

Dual-In-Line Package

TL/F/6530–1

Order Number 5485DMQB, 5485FMQB, DM5485J, DM5485W or DM7485N

See NS Package Number J16A, N16E or W16A

1995 National Semiconductor Corporation

TL/F/6530

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6

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