74LS83A - Motorola

74LS83A 4-BIT BINARY FULL ADDER

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: (+) = plus Due to the symmetry of the binary add function the LS83A can be used with either all inputs and outputs active HIGH (posi.

Features

standard corner power pins. CONNECTION DIAGRAM DIP (TOP VIEW) B4 Σ4 C4 C0 GND B1 A1 Σ1 16 15 14 13 12 11 10 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 12 A4 Σ3 3 4 56 A3 B3 VCC Σ2 78 B2 A2 PIN NAMES LOADING (Note a) HIGH LOW A1
  – A4 B1
  – B4 C0 Σ1
  – Σ4 C4 Operand A Inputs Operand B Inputs Carry Input Sum Outputs (Note b) Carry Output (Note b) 1.0 U.L. 1.0 U.L. 0.5 U.L. 10 U.L. 10 U.L. 0.5 U.L. 0.5 U.L. 0.25 U.L. 5 (2.5) U.L. 5 (2.5) U.L. NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor.