SN74LS283
4-BIT BINARY FULL ADDER WITH FAST CARRY
The SN54 / 74LS283 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 LS283 operates with either active HIGH or active LOW operands (positive or negative logic).
SN54/74LS283
4-BIT BINARY FULL ADDER WITH FAST CARRY
LOW POWER SCHOTTKY
VCC B3 16 15
CONNECTION DIAGRAM DIP (TOP VIEW)
A3 Σ3 A4 B4 Σ4 C4 14 13 12 11 10 9
NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package.
1 2 3 4 56 78 Σ2 B2 A2 Σ1 A1 B1 C0 GND
PIN NAMES
LOADING (Note a)
HIGH
A1
- A4 B1- B4 C0 ∑1
- ∑4 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...
