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74F381 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
74F381 4-Bit Arithmetic Logic Unit Fairchild
Fairchild Semiconductor Fairchild
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General Description
The 74F381 performs three arithmetic and three logic operations on two 4-bit words, A and B. Two additional select input codes force the function outputs LOW or HIGH. Carry propagate and generate outputs are provided for use with the 74F182 carry lookahead generator for high-speed expansion to longer word lengths. For ripple expansion, refer to the 74F382 ALU data sheet.

Features
■ Low input loading minimizes drive requirements
■ Performs six arithmetic and logic functions
■ Selectable LOW (clear) and HIGH (preset) functions
■ Carry generate and propagate outputs for use with carry lookahead generator

 

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