74ACQ374SCX

Overview

The 74ACQ374SCX is an octal D-type flip-flop manufactured by Fairchild Semiconductor, featuring 3-STATE outputs for bus-oriented applications. It belongs to the Quiet Series (ACQ), designed for high-speed and low-power performance with reduced I/O impedance. The component utilizes a buffered positive edge-triggered clock and includes separate D-type inputs for each flip-flop. Common control signals include Clock (CP) and Output Enable (OE). It operates within standard industrial temperature ranges and is housed in a lead-free SOIC-20 package compliant with MS-013AC standards.

Feature Summary

• Octal D-type flip-flop architecture with 3-STATE outputs suitable for bus-oriented systems
• Quiet Series design providing reduced I/O impedance for improved signal integrity
• Buffered positive edge-triggered clock input common to all flip-flops

Applications

• Bus-oriented data storage applications
• High-speed digital logic circuits requiring low power consumption
• System memory modules and register files

Procurement Notes

Verify that the specific ordering suffix 'SCX' corresponds to the SOIC-20 package and lead-free RoHS compliance as documented in official Fairchild literature. Confirm that the part number matches the Quiet Series specifications rather than standard AC or ACT variants. Ensure procurement sources provide valid datasheets confirming the device is not obsolete or discontinued, as availability may vary across distributors.

Selection Notes

Select this component when designing systems requiring octal storage with tri-state output capability and enhanced noise immunity. The Quiet Series designation indicates optimized output drive characteristics compared to standard AC logic families. Consider pinout compatibility with related devices such as the 74ACT374 if transitioning between logic families, ensuring voltage levels and timing requirements align with the system design constraints.

Part Context

This device is part of the broader 74ACQ family of octal D-type flip-flops. It shares functional similarities with the 74ACT374 but differs in series-specific electrical characteristics and output drive capabilities. The SCX suffix denotes the specific tape-and-reel packaging format within the SOIC-20 footprint, distinguishing it from other package options like TSSOP or DIP available for similar logic functions.

Replacement Considerations

Public confirmed substitute part numbers include 74ACT374SC for functional equivalence in standard ACT logic. Cross-reference documents indicate compatibility with SN74AS574DWE4 for broadside pinout variations. Verify pinout alignment and electrical parameters before substitution.