Carry Lookahead Generator
74F182 Carry Lookahead Generator
April 1988 Revised July 1999
74F182 Carry Lookahead Generator
General Description
The...
Description
74F182 Carry Lookahead Generator
April 1988 Revised July 1999
74F182 Carry Lookahead Generator
General Description
The 74F182 is a high-speed carry lookahead generator. It is generally used with the 74F181 or 74F381 4-bit arithmetic logic units to provide high-speed lookahead over word lengths of more than four bits.
Features
s Provides lookahead carries across a group of four ALUs s Multi-level lookahead high-speed arithmetic operation over long word lengths
Ordering Code:
Order Number 74F182SJ 74F182PC Package Number M16D N16E Package Description 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-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
© 1999 Fairchild Semiconductor Corporation
DS009492
www.fairchildsemi.com
74F182
Unit Loading/Fan Out
Pin Names Cn G0, G2 G1 G3 P0, P1 P2 P3 Cn+x − Cn+z G P Carry Input Carry Generate Inputs (Active LOW) Carry Generate Input (Active LOW) Carry Generate Input (Active LOW) Carry Propagate Inputs (Active LOW) Carry Propagate Input (Active LOW) Carry Propagate Input (Active LOW) Carry Outputs Carry Generate Output (Active LOW) Carry Propagate Output (Active LOW) Description U.L. HIGH/LOW 1.0/2.0 1.0/14.0 1.0/16.0 1.0/8.0 1.0/8.0 1.0/6.0 1.0/4.0 50/33.3 50/33.3 50/33.3 Input IIH/IIL Output IOH/IOL 20 µA/−1.2 mA 20 µA/−8.4 mA 20 µA/−9.6 mA 20 µA/−4.8 mA 20 µA/...
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