74LCX374WM

Overview

The Fairchild Semiconductor 74LCX374WM is an octal D-type flip-flop featuring three-state outputs, designed for bus-oriented applications. It operates within a supply voltage range of 2V to 5.5V and contains six independent buffers per package in related variants, though the 374 series typically integrates eight D-type flip-flops. The device utilizes advanced CMOS technology to achieve high-speed operation with low power consumption. It supports a wide operating temperature range from -40°C to +85°C and is housed in a 20-pin SOIC package.

Feature Summary

• Octal D-type flip-flop architecture with separate inputs for each stage
• Three-state outputs enabling direct connection to system buses without interface components
• Buffered clock and output enable signals common to all flip-flops for synchronized control
• TTL-compatible input thresholds ensuring reliable logic level recognition

Applications

• Bus-oriented data storage and transfer systems
• High-speed buffer registers for digital signal processing
• I/O port implementations in embedded controllers
• Bidirectional bus drivers requiring isolated high-impedance states

Procurement Notes

Verify the specific suffix 'WM' against the manufacturer's current ordering guide to confirm the exact package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements if mandated by your assembly process. Cross-reference the datasheet revision date to confirm pinout compatibility with existing PCB layouts before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring octal data latching with high noise immunity and low static power dissipation. The 74LCX series offers superior speed compared to standard LS logic while maintaining CMOS efficiency. Consider the 20-pin SOIC footprint constraints and verify that the 2V to 5.5V operating range aligns with your system's power distribution network and signal integrity requirements.

Part Context

This part belongs to the 74LCX family of low-voltage CMOS logic devices, which are optimized for 2.5V and 3.3V applications. The 74LCX374 variant specifically provides octal flip-flop functionality, distinguishing it from latch-based counterparts like the 74LCX573. It serves as a critical interface element in modern digital circuits where data retention and bus isolation are required simultaneously.

Replacement Considerations

Compatible substitutes include the ON Semiconductor version of the same part number and other manufacturers offering the 74LCX374 in SOIC-20 packages. Verify electrical characteristics and pinout alignment before substitution.