Overview
The SN74LS283NSR is a 4-bit binary full adder integrated circuit produced by Texas Instruments. This component is part of the 74LS series and is designed to perform the addition of two 4-bit binary words. It features full internal look-ahead across all four bits, generating the carry term efficiently. The SN74LS283NSR is electrically and functionally identical to the '83A and 'LS83A, with the primary difference being the arrangement of the terminals. This component is widely used in digital systems requiring fast and efficient arithmetic operations.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 16-SOIC (0.209, 5.30mm Width) |
| Number of Pins | 16 |
| Operating Temperature Range | 0°C to 70°C |
| Supply Voltage | 4.75V to 5.25V |
| Propagation Delay | 24 ns |
| Logic Function | Binary Full Adder with Fast Carry |
| Output Polarity | Inverted |
| High Level Output Current | -400 μA |
| Low Level Output Current | 8 mA |
| Max Power Dissipation | 95 mW |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Pbfree Code | Yes |
| RoHS Status | ROHS3 Compliant |
Key Features
- Full-Carry Look-Ahead Across the Four Bits: This feature allows for efficient generation of the carry term in 10 nanoseconds for the '283 and 'LS283, and 7.5 nanoseconds for the 'S283.
- Partial Look-Ahead Performance: The component achieves partial look-ahead performance with the economy and reduced package count of a ripple-carry implementation.
- Supply Voltage and Ground on Corner Pins: Simplifies PCB layout by placing supply voltage and ground on corner pins.
- End Around Carry: Can be accomplished without the need for logic or level inversion.
- True Form Adder Logic: The adder logic, including the carry, is implemented in its true form.
Applications
The SN74LS283NSR is suitable for various digital systems that require fast and efficient arithmetic operations. Some common applications include:
- Digital Computers and Processors
- Embedded Systems
- Digital Signal Processing
- Arithmetic Logic Units (ALUs)
- Other Digital Circuits Requiring Binary Addition
Q & A
- What is the primary function of the SN74LS283NSR?
The primary function is to perform the addition of two 4-bit binary words. - What is the typical propagation delay of the SN74LS283NSR?
The typical propagation delay is 24 nanoseconds. - What is the operating temperature range of the SN74LS283NSR?
The operating temperature range is 0°C to 70°C. - What is the supply voltage range for the SN74LS283NSR?
The supply voltage range is 4.75V to 5.25V. - Does the SN74LS283NSR support end around carry?
Yes, it supports end around carry without the need for logic or level inversion. - What is the package type of the SN74LS283NSR?
The package type is 16-SOIC (0.209, 5.30mm Width). - Is the SN74LS283NSR RoHS compliant?
Yes, it is ROHS3 compliant. - What is the maximum power dissipation of the SN74LS283NSR?
The maximum power dissipation is 95 mW. - What is the logic function of the SN74LS283NSR?
The logic function is a Binary Full Adder with Fast Carry. - What is the moisture sensitivity level (MSL) of the SN74LS283NSR?
The MSL is 1 (Unlimited).
