TC74LCX541F(EL,K,F

Overview

The TC74LCX541F is a low-voltage octal bus buffer manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 1.65 V to 3.6 V, with inputs and outputs tolerant up to 5.5 V. The device features non-inverting logic with two active-low output enables (OE1, OE2). When either enable pin is high, the outputs enter a high-impedance state. It provides a maximum propagation delay of 6.5 ns at 3.0 V to 3.6 V and supports minimum output currents of 24 mA. The component is available in SOP and VSSOP packages.

Feature Summary

• Low-voltage operation optimized for 3.3 V systems while maintaining compatibility with 5 V environments
• High-speed performance with minimal propagation delay under standard operating conditions
• Robust input and output protection circuits designed to withstand static discharge events
• Power-down protection integrated on all pins to prevent excessive current draw during power loss

Applications

• Interface between 3.3 V logic devices and 5 V supply environments
• Memory address driver applications requiring 3-state control
• Bus-oriented transmission systems utilizing octal buffering
• Low-power digital circuit designs requiring CMOS technology

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the F suffix denotes SOP and FK denotes VSSOP. Confirm RoHS compliance status through official Toshiba documentation prior to procurement. Ensure design parameters align with the specified absolute maximum ratings to maintain reliability. Review the latest datasheet versions for any updates regarding manufacturing dates or electrical characteristic revisions.

Selection Notes

Select this component when interfacing low-voltage logic with higher voltage domains without level shifting requirements. The dual output enables provide flexible control over bus directionality and isolation. Consider the package weight and dimensions if thermal management or space constraints are critical factors in the system architecture.

Part Context

This part belongs to the TC74LCX series of low-voltage CMOS logic devices. It serves as an octal buffer variant within the broader family of bus drivers. The LCX series is characterized by its ability to operate at lower voltages than traditional HC or AC families while offering comparable speed and drive capabilities.

Replacement Considerations

The datasheet confirms pin and function compatibility with the 74AC, 74VHC, 74HC, 74F, 74ALS, and 74LS 541 types. Verify voltage tolerance levels and drive strength specifications against these alternatives before substitution.