Description
The SN74LS83A is a high-speed 4-Bit binary Full Adder with internal carry look ahead. 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). The SN74LS283 is recommended for new designs since it is identical in
function with this device and features standard corner power pins.
Description:
Encapsulation: DIP-16
Binary Full Adder With Fast Carry
Supply Voltage: 4.75V~5.25V
Output Current -High: -0.4mA
Output Current -Low: 8.0mA
Operating Temperature: 0 °C~+70 °C
Size: 19mm x 8.6mm x 7.2mm
Features
■ Full-carry look-ahead across the four bits
■ Systems achieve partial look-ahead performance with
the economy of ripple carry
■ Typical add times
Two 8-bit words 25 ns
Two 16-bit words 45 ns
■ Typical power dissipation per 4-bit adder 95 mW
