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CD40181BMS - CMOS 4 Bit Arithmetic Logic Unit

General Description

The CD40181BMS is a low power four bit parallel arithmetic logic unit (ALU) capable of providing 16 binary arithmetic operations on two four-bit words and 16 logical functions of two Boolean variables.

The mode control input M selects logical (M = High) or arithmetic (M = Low) operation.

Key Features

  • High Voltage Type (20V Rating).
  • Full Look Ahead Carry for Speed Operations on Long Words.
  • Generates 16 Logic Functions of Two Boolean Variables.
  • Generates 16 Arithmetic Functions of Two 4 Bit Binary Words.
  • A = B comparator Output Available.
  • Ripple Carry Input and Output Available.
  • Typical Addition Time 200ns at VDD = 10V.
  • 100% Tested for Quiescent Current at 20V.
  • 5V, 10V and 15V Parametric Ratings.
  • Maximum.

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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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CD40181BMS December 1992 CMOS 4 Bit Arithmetic Logic Unit Description The CD40181BMS is a low power four bit parallel arithmetic logic unit (ALU) capable of providing 16 binary arithmetic operations on two four-bit words and 16 logical functions of two Boolean variables. The mode control input M selects logical (M = High) or arithmetic (M = Low) operation. The four select inputs (S0, S1, S2, and S3) select the desired logical or arithmetic functions, which include AND, OR, NAND, NOR and exclusive-OR and-NOR in the logic mode, and addition, subtraction, decrement, left-shift and straight transfer in the arithmetic mode, according to the truth table.