DM54LS283J datasheet(1/8 Pages) NSC

No de pièce	DM54LS283J

Description	4-Bit Binary Adders with Fast Carry

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Fabricant	NSC [National Semiconductor (TI)]

Site Internet	http://www.national.com

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TLF6421

June 1989

54LS283DM54LS283DM74LS283

4-Bit Binary Adders with Fast Carry

General Description

These full adders perform the addition of two 4-bit binary

numbers The sum (R) outputs are provided for each bit and

the resultant carry (C4) is obtained from the fourth bit

These adders feature full internal look ahead across all four

bits This provides the system designer with partial look-

ahead performance at the economy and reduced package

count of a ripple-carry implementation

The adder logic including the carry is implemented in its

true form meaning that the end-around carry can be accom-

plished without the need for logic or level inversion

Features

Y

Full-carry look-ahead across the four bits

Y

Systems achieve partial look-ahead performance with

the economy of ripple carry

Y

Typical add times

Two 8-bit words 25 ns

Two 16-bit words 45 ns

Y

Typical power dissipation per 4-bit adder 95 mW

Y

Alternate MilitaryAerospace device (54LS283) is avail-

able Contact a National Semiconductor Sales Office

Distributor for specifications

Connection Diagram

Dual-In-Line Package

TLF6421 – 1

Order Number 54LS283DMQB 54LS283FMQB 54LS283LMQB

DM54LS283J DM54LS283W DM74LS283M or DM74LS283N

See NS Package Number E20A J16A M16A N16E or W16A

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A

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Texas Instruments	SN54F283	81Kb / 5P	4-BIT BINARY FULL ADDERS WITH FAST CARRY
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