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MM74HC283J Datasheet

  • MM74HC283J

  • 4-Bit Binary Adder with Fast Carry

  • 6頁(yè)

  • NSC

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MM54HC283 MM74HC283 4-Bit Binary Adder with Fast Carry
January 1988
MM54HC283 MM74HC283
4-Bit Binary Adder with Fast Carry
General Description
This full adder performs the addition of two 4-bit binary num-
bers utilizing advanced silicon-gate CMOS technology The
sum (R) outputs are provided for each bit and the resultant
carry (C4) is obtained from the fourth bit These adders fea-
ture full internal look ahead across all four bits This pro-
vides the system designer with partial look-ahead perform-
ance at the economy and reduced package count of a rip-
ple-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 All in-
puts are protected from damage due to static discharge by
internal diode clamps to V
CC
and ground
Features
Y
Y
Y
Y
Y
Full-carry look-ahead across the four bits
Systems achieve partial look-ahead performance
with the economy of ripple carry
Wide supply range 2V to 6V
Low quiescent power consumption 8
mA
at 25 C
Low input current 1
mA
maximum
Connection Diagram
Dual-In-Line Package
TL F 5332 鈥?1
Top View
Order Number MM54HC283 or MM74HC283
C
1995 National Semiconductor Corporation
TL F 5332
RRD-B30M105 Printed in U S A

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