74F283SJ

Overview

The Fairchild Semiconductor 74F283SJ is a high-speed 4-bit binary full adder belonging to the F/FAST logic series. It accepts two 4-bit binary words (A0–A3, B0–B3) and a Carry input (C0), generating sum outputs (S0–S3) and a Carry output (C4). The device features internal carry lookahead for fast operation. It operates within a voltage range of 4.5V to 5.5V and is housed in a 16-SOP package.

Feature Summary

• High-speed 4-bit binary full adder with internal carry lookahead
• Accepts two 4-bit binary inputs and a carry input
• Generates sum outputs and a final carry output
• Operates within standard 5V logic voltage ranges

Applications

• Digital arithmetic logic units
• Address calculation circuits
• Data processing systems requiring binary addition

Procurement Notes

Verify the specific suffix 'SJ' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the component meets RoHS compliance requirements if mandated by your assembly standards. Cross-reference the ordering code with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a synchronous 4-bit binary addition function is required with minimal propagation delay. The internal carry lookahead architecture makes it suitable for applications where speed is critical compared to ripple-carry adders. Ensure the system voltage aligns with the specified 4.5V to 5.5V operating range.

Part Context

This part belongs to the 74F series, known for high-speed performance in TTL-compatible logic. The 74F283 specifically implements a full adder function, distinguishing it from half-adders or simpler arithmetic components. It is designed for integration into larger digital systems requiring efficient binary computation capabilities.

Replacement Considerations

Compatible substitutes include other 74F283 variants from different manufacturers, provided they maintain the same 16-SOP pinout and electrical characteristics. Verify that any replacement supports the same voltage range and logic levels.