74LCX374FT

Overview

The 74LCX374FT is a low-voltage CMOS octal D-type flip-flop manufactured by Toshiba Semiconductor and Storage. It features eight positive-edge-triggered D-type flip-flops with tri-state outputs, housed in a 20-TSSOP package. The device operates within a supply voltage range of 1.65V to 3.6V, supporting high-speed operation while maintaining low power dissipation. It is designed for 3.3-V systems but provides 5-V tolerant inputs and outputs, allowing safe interfacing with 5-V environments. Key electrical characteristics include a maximum propagation delay of 8ns at 3.3V with 50pF load capacitance, and an operating temperature range from -40°C to +85°C.

Feature Summary

• Octal configuration with eight independent D-type flip-flops
• Tri-state outputs for bus-oriented memory and communication applications
• 5-V tolerant inputs and outputs for mixed-voltage system compatibility
• High-speed operation with low power consumption

Applications

• Bus-oriented memory applications
• Communication modules requiring data latching
• High-speed sampling registers
• Mobile equipment logic circuits

Procurement Notes

Verify the manufacturer part number matches Toshiba Semiconductor and Storage specifications. Confirm the package type is 20-TSSOP and the suffix FT indicates tape and reel packaging. Ensure the component meets RoHS compliance standards if required by the project. Cross-reference the datasheet for specific electrical parameters such as propagation delay and supply voltage ranges to ensure compatibility with the target circuit design.

Selection Notes

Select this component when an octal D-type flip-flop with tri-state outputs is required for 3.3-V logic systems. It is suitable for designs needing 5-V tolerance on both inputs and outputs to interface with legacy or mixed-voltage components. Consider the 20-TSSOP package for surface-mount applications where space efficiency is critical. Evaluate the propagation delay and power consumption against system speed and thermal requirements.

Part Context

The 74LCX374FT belongs to the LCX series of low-voltage CMOS logic devices. This series is optimized for 3.3-V applications, offering performance comparable to standard 5-V logic families while consuming significantly less power. The LCX family includes various logic functions such as buffers, drivers, and flip-flops, all featuring 5-V tolerant I/Os. The 74LCX374 specifically addresses the need for parallel data storage in high-speed digital systems.

Replacement Considerations

Compatible substitutes include MC74LCX374 from ON Semiconductor and SN74LCX374 from Texas Instruments. These alternatives share similar electrical characteristics and pin configurations. Verify that any replacement part maintains the 20-TSSOP package and 5-V tolerant input/output specifications to ensure seamless integration into existing designs.