74AC373SJX

Overview

The Fairchild Semiconductor 74AC373SJX is an octal transparent latch with 3-STATE outputs, belonging to the AC logic family. It utilizes advanced silicon-gate CMOS technology to provide high-speed operation and low power consumption. The device features eight D-type latches in a single package, designed for bus-oriented system applications. It includes separate data inputs and a common Latch Enable (LE) input. When LE is HIGH, the outputs follow the inputs; when LOW, data meeting setup times is latched. An Output Enable (OE) controls the 3-STATE condition.

Feature Summary

• Octal transparent latch configuration with three-state outputs
• High-speed CMOS technology for low power consumption
• Bus-oriented design suitable for organized systems

Applications

• Bus-oriented system interfacing
• Data storage in digital circuits
• Parallel-to-serial conversion interfaces

Procurement Notes

Verify the specific suffix SJX against the manufacturer's current datasheet to confirm package type and lead-free status. Ensure compatibility with the target voltage range of 2.0V to 6.0V. Check for RoHS compliance requirements relevant to the destination market. Confirm pinout alignment with the SOIC-20 or similar package variant specified in the official documentation before procurement.

Selection Notes

Select this component for applications requiring high-speed data latching with bus isolation capabilities. The AC series offers improved speed over standard HC families while maintaining CMOS power efficiency. Consider the 3-STATE output feature for shared bus architectures where multiple devices must drive the same lines without contention. Verify input voltage levels match the system logic standards.

Part Context

The 74AC373 is part of the widely used 74-series logic family, specifically the AC (Advanced CMOS) sub-family. It serves as a fundamental building block for digital memory and interface circuits. The device is functionally compatible with other 74-series logic families regarding pinouts, facilitating easy integration into existing designs that utilize standard TTL or CMOS logic components.

Replacement Considerations

Equivalent parts include the 74ACT373 for ACT series compatibility and the 74HC373 for HC series performance. Other manufacturers such as Nexperia and NXP produce functional equivalents like the 74AC373N. Verify electrical characteristics and package dimensions before substitution.