74LS283 4-bit Binary Full Add with Fast Carry
Package PDIP, SOIC Series 74LS
74LS283 overview
The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS283 full adders perform the addition of two 4-bit binary words. The sum (2) outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit.
Key specifications
Supply Voltage
4.75 - 5.25Vdc
Maximum Clock Frequency
40Mhz
Power Dissipation
2mW/gate @100kHz
Minimum Output Current
8mA
Propagation Delay
10nS
Fan Out (TTL Loads)
20
Datasheet
283.pdf
74LS283 features
- Full Added Performs Addition of Two 4-bit Binary Numbers
- Full Carry Look Ahead across the 4-bits
- Fast Add Times
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS283 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | Σ2 | Sum Output |
| 2 | B2 | Operand B Input |
| 3 | A2 | Operand A Input |
| 4 | Σ1 | Sum Output |
| 5 | A1 | Operand A Input |
| 6 | B1 | Operand B Input |
| 7 | C0 | Carry Input |
| 8 | GND | Ground |
| 9 | C4 | Resultant Carry Output |
| 10 | Σ4 | Sum Output |
| 11 | B4 | Operand B Input |
| 12 | A4 | Operand A Input |
| 13 | Σ3 | Sum Output |
| 14 | A3 | Operand A Input |
| 15 | B3 | Operand B Input |
| 16 | VCC | Positive Supply |
74LS283 applications
- A Full Adder's circuit can be used as a part of many other larger circuits like Ripple Carry Adder, which adds n-bits simultaneously.
- The dedicated multiplication circuit uses Full Adder's circuit to perform Carryout Multiplication.
- Full Adders are used in ALU- Arithmetic Logic Unit.
Comments 0
Leave a comment