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SN74LS283

Manufacturer: TI

LOW POWER SCHOTTKY

Partnumber Manufacturer Quantity Availability
SN74LS283 TI 4040 In Stock

Description and Introduction

LOW POWER SCHOTTKY The SN74LS283 is a 4-bit binary full adder with fast carry, manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** 4-Bit Binary Full Adder  
- **Technology:** Low-Power Schottky (LS)  
- **Supply Voltage (VCC):** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Propagation Delay (Typical):** 24 ns  
- **Power Dissipation (Typical):** 45 mW  
- **Input Current (Max):** -0.4 mA (Low), 20 µA (High)  
- **Output Current (Max):** 8 mA (Low), -0.4 mA (High)  
- **Package Options:** 16-pin PDIP, SOIC, CDIP  

### **Descriptions:**  
The SN74LS283 performs the addition of two 4-bit binary numbers (A0-A3 and B0-B3) along with a carry input (C0). It generates a 4-bit sum (Σ0-Σ3) and a carry output (C4).  

### **Features:**  
- **High-Speed Operation:** Fast carry propagation for efficient arithmetic operations.  
- **Low Power Consumption:** Optimized for power-sensitive applications.  
- **Wide Operating Voltage:** Compatible with standard TTL levels.  
- **Cascadable:** Multiple units can be connected for larger bit-width additions.  
- **Schottky Clamped:** Improves switching speed and reduces power dissipation.  

This information is based on the official TI datasheet for the SN74LS283.

Application Scenarios & Design Considerations

LOW POWER SCHOTTKY

Alternative Part Number

  • CD74HC283E --: Pin-compatible 4-bit binary full adder with carry lookahead; CMOS HC family offers lower power and wider supply range than LS TTL, and is a direct functional drop-in.
  • MC74HC283N --: Same 4-bit full adder function in HC CMOS logic with identical pinout, suitable as a lower-power replacement for the LS device.
  • 74HCT283N --: HCT family provides TTL-compatible input thresholds while keeping CMOS low power, making it a practical substitute for LS283 in mixed TTL systems.
  • MC74HC283AN --: Pin-compatible 4-bit full adder from a different manufacturer and series, suitable as a direct functional replacement.
  • 74F283PC --: 4-bit binary full adder in the 74F family with identical logic function and pinout, providing a faster alternative to the LS version.

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