HD74HC283 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

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HD74HC283

4-bit Binary Full Adder

Hitachi -> Renesas Electronics 

HD74HC283

4-bit Binary Full Adder

Description

The sun ( ) outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit.

This adder features 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 for meaning that the end-

around carry can be accomplished without the need for logic or level inversion.

Features

• High Speed Operation: tpd = 19 ns typ (CL = 50 pF)

• High Output Current: Fanout of 10 LSTTL Loads

• Wide Operating Voltage: VCC = 2 to 6 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

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