74LCX74M

Overview

The Fairchild Semiconductor 74LCX74M is a dual D-type flip-flop from the 74LCX logic family, housed in a 14-pin TSSOP surface-mount package. It operates on a supply voltage range of 2V to 3.6V with a maximum static current of 10 µA. The device features positive-edge triggering and includes set and reset functions. It supports input levels compatible with LVTTL and TTL standards while providing complementary outputs. The component ensures high-speed operation with a propagation delay of up to 7ns at 3.3V and 50pF load, functioning reliably within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual D-type flip-flops with positive-edge triggering
• Integrated set and reset control functions
• LVTTL and TTL compatible input levels
• Complementary output configuration

Applications

• Parallel data storage circuits
• Shift register implementations
• Timing and synchronization logic
• State machine design elements

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape-and-reel specifications. Confirm manufacturer status as onsemi or Fairchild Semiconductor for accurate sourcing. Ensure the selected variant matches the required operating temperature range and electrical characteristics for your specific application environment.

Selection Notes

Select this component when dual independent D-type flip-flops are required in a low-voltage CMOS environment. It is suitable for designs needing LVTTL/TTL interface compatibility without additional level shifters. Consider the 14-pin TSSOP footprint for space-constrained surface-mount layouts requiring standard logic density.

Part Context

This part belongs to the 74LCX series, designed for low-voltage applications using advanced CMOS technology. It provides high-speed performance comparable to older families while maintaining significantly lower power consumption. The series is widely used in portable electronics and battery-powered devices where efficient power management is critical alongside reliable digital signal processing.

Replacement Considerations

Public confirmed substitute part numbers include 74LCX74MTCX and 74LCX74MTC.