TC74LCX373FK(EL,K)

Overview

The TC74LCX373FK is a low-voltage octal D-type latch manufactured by Toshiba Semiconductor and Storage. It operates within a power supply voltage range of 1.65 V to 3.6 V, with inputs and outputs tolerant to 5-V signals. The device features high-speed operation with a maximum propagation delay of 8.0 ns at 3.3 V and provides an output current of 24 mA minimum at 3.0 V. It includes power-down protection on all inputs and outputs and is available in SOP and VSSOP packages.

Feature Summary

• Provides 5-V tolerant inputs and outputs for interfacing between low-voltage and 5-V systems
• Includes power-down protection circuits on all inputs and outputs
• Features pin and function compatibility with standard 74 series logic devices

Applications

• Low-voltage (3.3 V) system data latching
• Interface bridging between 3.3 V and 5 V logic domains
• High-speed digital signal storage applications

Procurement Notes

Verify the specific package variant required, as the part number suffix indicates either SOP or VSSOP packaging. Confirm RoHS compliance status directly with the manufacturer, as environmental declarations may vary by production batch. Ensure design adherence to the specified operating temperature range of -40°C to 85°C for reliable performance.

Selection Notes

Select this component when 5-V tolerance is required for both input and output pins while maintaining low-voltage operation. The device offers high drive capability suitable for moderate capacitive loads. Consider the propagation delay specifications relative to the target clock frequency and ensure adequate power supply decoupling for stable switching performance.

Part Context

This component belongs to the TC74LCX series of low-voltage CMOS logic devices. It serves as an octal latch variant within Toshiba's portfolio, designed to replace older 74-series equivalents in modern low-power applications. The LCX family focuses on reducing power consumption while maintaining high-speed performance standards.

Replacement Considerations

The datasheet notes pin and function compatibility with 74AC, 74VHC, 74HC, 74F, 74ALS, and 74LS 373 types. Verify voltage level compatibility and drive strength requirements before substituting with these legacy families.