74LCX74MTCX

Overview

The Fairchild Semiconductor 74LCX74MTCX is a dual D-type positive edge-triggered flip-flop housed in a 14-TSSOP package. It features asynchronous Clear and Set inputs with complementary Q and Q outputs. The device operates within a supply voltage range of 2V to 5.5V, supporting low-voltage digital systems. It provides high noise immunity and is functionally compatible with standard 74-series logic interfaces.

Feature Summary

• Dual D-type flip-flop architecture with positive edge triggering
• Asynchronous Clear and Set control inputs for immediate state management
• Complementary Q and Q output configurations
• Wide operating voltage range supporting 2V to 5.5V systems

Applications

• Data storage and register applications in low-voltage digital circuits
• State machine implementation requiring asynchronous preset and clear functions
• Interface logic between 5V and 3.3V system domains
• Sequential logic design in portable electronic devices

Procurement Notes

Verify the manufacturer origin, as production rights transferred from Fairchild Semiconductor to onsemi. Confirm the specific suffix 'MTCX' indicates tape-and-reel packaging rather than bulk. Ensure the component meets RoHS compliance standards required for modern assembly processes. Cross-reference the datasheet revision to confirm pinout consistency with legacy designs.

Selection Notes

Select this component when dual independent D-flip-flops are required in a compact surface-mount footprint. The asynchronous set and clear capabilities allow for immediate initialization without clock dependency. The wide voltage tolerance makes it suitable for mixed-signal environments transitioning between different logic levels. Ensure the application timing requirements align with the propagation delays specified in the official electrical characteristics table.

Part Context

This part belongs to the 74LCX series, designed for low-voltage CMOS operations. It serves as a fundamental sequential logic element in digital system design. The TSSOP-14 package offers a balance between pin count and board space efficiency. It is widely used in consumer electronics and industrial control systems where power consumption and signal integrity are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers include 74LCX74MTC and 74LCX74MX. These variants share identical logical functionality but may differ in packaging format or manufacturing lot specifications. Verify that any replacement maintains the same asynchronous control logic and voltage operating ranges.