Datasheet4U Logo Datasheet4U.com

SN74LS83A Datasheet 4-BIT BINARY FULL ADDER

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

Overview: 4-BIT BINARY FULL ADDER WITH FAST CARRY The SN54 / 74LS83A is a high-speed 4-Bit binary Full Adder with internal carry lookahead. It accepts two 4-bit binary words (A1 – A4, B1 – B4) and a Carry Input (C0). It generates the binary Sum outputs ∑1 – ∑4) and the Carry Output (C4) from the most significant bit. The LS83A operates with either active HIGH or active LOW operands (positive or negative logic).

General Description

The LS83A adds two 4-bit binary words (A plus B) plus the incoming carry.

The binary sum appears on the sum outputs (∑1 – ∑4) and outgoing carry (C4) outputs.

C0 + (A1+B1)+2(A2+B2)+4(A3+B3)+8(A4+B4) = ∑1+2∑2+4∑3+8∑4+16C4 Where: (+) =

Key Features

  • standard corner power pins.