TC74LCX541FT(EL)

Overview

The TC74LCX541FT(EL) is a low-voltage octal bus buffer manufactured by Toshiba Semiconductor and Storage. It features non-inverting, three-state outputs with two active-low output enables (OE1, OE2). The device operates within a power supply voltage range of 1.65 V to 3.6 V and supports 5-V tolerant inputs and outputs. It provides high-speed operation with a maximum propagation delay of 6.5 ns at 3.0 V to 3.6 V. The component offers a minimum output current of 24 mA at 3.0 V and includes power-down protection on all inputs and outputs.

Feature Summary

• Low-voltage operation capability for 3.3 V systems
• High-speed performance with minimal propagation delay
• Power-down protection integrated on all input and output terminals
• Pin and function compatibility with standard 74 series logic types

Applications

• Three-state memory address drivers
• Bus-oriented architectures requiring level shifting
• Systems interfacing between 3.3 V and 5 V environments

Procurement Notes

Verify the specific ordering suffix against official Toshiba documentation to confirm package type and tape-and-reel specifications. Ensure that the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Confirm RoHS compliance status and manufacturing date codes if operating parameters for lower voltage ranges are required for the design.

Selection Notes

Select this component when designing low-voltage digital systems requiring octal buffering with high drive strength. The 5-V tolerance feature allows direct interfacing with legacy 5-V logic without additional level shifters. Consider the dual enable pins for complex bus control schemes. Verify that the load capacitance and switching frequency requirements fall within the specified AC characteristics for the target supply voltage.

Part Context

This part belongs to the TC74LCX series of advanced CMOS logic devices. It serves as an octal bus buffer variant within the broader 74 logic family ecosystem. The LCX series is optimized for low-voltage applications while maintaining performance levels comparable to higher voltage counterparts. It complements other buffer and driver ICs used in data transmission and memory interface circuits.

Replacement Considerations

The datasheet confirms pin and function compatibility with 74AC, 74VHC, 74HC, 74F, 74ALS, and 74LS 541 types. Substitution requires verification of supply voltage compatibility and output drive current capabilities. Ensure that the replacement device supports the required 5-V tolerance if interfacing with 5-V systems.