74F381 Datasheet, PDF (1/8 Pages) NXP Semiconductors – Arithmetic Logic Unit

May 1988
Revised August 1999
74F381
4-Bit Arithmetic Logic Unit
General Description
The 74F381 performs three arithmetic and three logic oper-
ations 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
s Low input loading minimizes drive requirements
s Performs six arithmetic and logic functions
s Selectable LOW (clear) and HIGH (preset) functions
s Carry generate and propagate outputs for use with carry
lookahead generator
Ordering Code:
Order Number Package Number
Package Description
74F381SC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F381SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F381PC
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation DS009528
www.fairchildsemi.com