74F381SJ

Overview

The 74F381SJ is a high-speed CMOS logic component manufactured by Rochester Electronics, LLC. It functions as a 4-bit arithmetic logic unit (ALU) belonging to the F/FAST series. The device supports parallel data processing with selectable arithmetic and logic operations. It is designed for applications requiring fast propagation delays and low power consumption in digital systems.

Feature Summary

• Supports multiple arithmetic and logic functions including addition, subtraction, AND, OR, and XOR operations.
• Features high-speed CMOS technology for reduced power dissipation compared to standard TTL.
• Includes carry input and output pins for cascading multiple units to form wider bit-width processors.

Applications

• Microprocessor address generation units
• Digital signal processing arithmetic blocks
• Control logic in industrial automation systems

Procurement Notes

Verify the manufacturer marking matches Rochester Electronics, LLC specifications. Confirm the package type and pin configuration align with system requirements. Check for RoHS compliance status if required by environmental regulations. Ensure the component lot date code meets project timeline constraints. Validate electrical parameters against the official datasheet before integration.

Selection Notes

Select this component when a dedicated 4-bit ALU is needed for cost-sensitive designs. Consider the F/FAST series speed-grade requirements for timing closure. Evaluate power supply voltage compatibility with existing system rails. Assess board space constraints relative to the available package options.

Part Context

Rochester Electronics specializes in lifecycle management of obsolete and hard-to-find semiconductors. The 74F381SJ represents a continuation of legacy logic families originally produced by other manufacturers. This part ensures supply continuity for long-term production equipment without redesigning the circuit board.

Replacement Considerations

Direct equivalents may include original manufacturer variants such as Fairchild or National Semiconductor versions of the 74F381. Verify pinout compatibility and electrical characteristics before substitution. Cross-reference with other F/FAST series ALUs if functional flexibility is required.