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74F381 - Arithmetic Logic

General Description

The 74F381 performs three arithmetic and three logic operations on two 4-bit words, A and B.

S2) input codes force the Function outputs Low or High.

Key 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 look-ahead generator PIN.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Philips Semiconductors Product specification Arithmetic Logic Unit 74F381 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 look-ahead generator PIN CONFIGURATION A1 1 B1 2 A0 3 B0 4 S0 5 20 V CC 19 A2 18 B2 17 A3 16 B3 15 Cn 14 P 13 G 12 F3 11 F2 DESCRIPTION The 74F381 performs three arithmetic and three logic operations on two 4-bit words, A and B. Three additional Select (S0–S2) input codes force the Function outputs Low or High. Carry Propagate (P) and Generate (G) ouputs are provided for use with the 74F182 Carry Look Ahead Generator for high-speed expansion to longer word lengths.