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DM74LS83 Fiches technique(PDF) 1 Page - Fairchild Semiconductor

No de pièce DM74LS83
Description  4-Bit Binary Adder with Fast Carry
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS83 Fiches technique(HTML) 1 Page - Fairchild Semiconductor

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© 2000 Fairchild Semiconductor Corporation
DS006378
www.fairchildsemi.com
August 1986
Revised March 2000
DM74LS83A
4-Bit Binary Adder with Fast Carry
General Description
These full adders perform the addition of two 4-bit binary
numbers. The sum (
∑) 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
accomplished without the need for logic or level inversion.
Features
s Full-carry look-ahead across the four bits
s Systems achieve partial look-ahead performance with
the economy of ripple carry
s Typical add times
Two 8-bit words 25 ns
Two 16-bit words 45 ns
s Typical power dissipation per 4-bit adder 95 mW
Ordering Code:
Connection Diagram
Order Number
Package Number
Package Description
DM74LS83AN
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide


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