General Description

The ’F583 high-speed 4-bit, BCD full adder with internal carry lookahead accepts two 4-bit decimal numbers (A0–A3, B0–B3) and a Carry Input (Cn). It generates the decimal sum outputs (S0–S3), and a Carry Output (Cn+4) if the sum is greater than 9. The F583 is the functional equivalent of the 82S83.

Features

■ Adds two decimal numbers

■ Full internal lookahead

■ Fast ripple carry for economical expansion

■ Sum output delay time 16.5 ns max

■ Ripple carry delay time 8.5 ns max

■ Input to ripple delay time 14.0 ns max

■ Supply current 60 mA max