74ACQ373SC

Latches Overview

The Fairchild Semiconductor 74ACQ373SC is an octal transparent latch featuring 3-STATE outputs, designed for bus-oriented system applications. It belongs to the Quiet Series (ACQ), utilizing advanced silicon-gate CMOS technology to achieve high-speed operation with low power consumption and enhanced noise immunity. The device includes eight latches that appear transparent to data when the Latch Enable input is active, retaining stored data when disabled. Common Output Enable (OE) and Latch Enable controls manage all flip-flops simultaneously. The component is housed in a 20-pin SOIC package and supports TTL-compatible inputs.

Latches Feature Summary

• Octal transparent latch architecture with 3-STATE outputs for efficient bus management
• Quiet Series design providing reduced noise emissions and improved signal integrity
• Advanced silicon-gate CMOS technology ensuring high speed and low power dissipation
• Common control inputs for synchronized latch enable and output enable operations

Latches Applications

• Bus-oriented systems requiring temporary data storage and isolation
• High-speed digital logic circuits needing low-noise performance
• Interface modules connecting microprocessors to peripheral devices
• Data acquisition systems utilizing parallel data transfer

Latches Procurement Notes

Verify the specific manufacturer source, as ON Semiconductor acquired Fairchild's semiconductor business. Confirm the part number suffix matches the exact package variant required. Check RoHS compliance status against current regulatory standards. Ensure the supplier provides original manufacturer documentation or authorized distribution certificates to guarantee authenticity and traceability of the component batch.

Latches Selection Notes

Select this component when a high-speed octal latch with controlled output impedance is required. The ACQ series is suitable for environments where electromagnetic interference must be minimized compared to standard AC/ACT families. Consider the 3-STATE capability for shared bus architectures. Verify voltage compatibility with the target system logic levels before integration into the circuit design.

Latches Part Context

This component is part of the 74ACQ family, which extends the standard 74AC logic specifications with quieting features. It serves as a functional equivalent to other octal latches like the 74AC373 but offers distinct noise reduction characteristics. The device complements other logic families such as 74HC and 74ACT, providing a specialized solution for high-performance digital systems requiring reliable data latching and bus driving capabilities.

Latches Replacement Considerations

Direct substitutes include the 74AC373SC for standard AC performance or the 74ACT373SC for TTL-compatible input requirements. Cross-reference with ON Semiconductor equivalents if sourcing from the merged entity. Verify pinout compatibility and electrical specifications match the original design constraints before substitution.