TC74VHC540FTELM

Overview

The TC74VHC540FTELM is an octal bus buffer manufactured by Toshiba Semiconductor and Storage, housed in a 20-TSSOP surface-mount package. It features eight inverting inputs with three-state outputs, designed for high-speed data transmission applications. The device operates within a supply voltage range of 2.0 V to 5.5 V and supports a maximum output current of 24 mA. Key electrical characteristics include a propagation delay of 4 ns and low static power consumption of 8 µA. It functions reliably across an operating temperature range from -40°C to +85°C, making it suitable for various digital logic interfacing tasks.

Feature Summary

• Provides eight inverting buffer channels with three-state output capability for efficient bus management
• Supports wide supply voltage operation ranging from 2.0 V to 5.5 V for flexible system integration
• Delivers high drive strength with 24 mA output current capability for robust signal integrity
• Ensures fast switching performance with a typical propagation delay of 4 ns

Applications

• High-speed data bus buffering in computing systems
• Clock distribution networks requiring precise timing control
• Memory interface circuits for address and data lines
• Portable electronic devices utilizing low-voltage power supplies

Procurement Notes

Verify the complete part number including the suffix EL against official Toshiba Semiconductor and Storage documentation to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status through the manufacturer's latest datasheet or certification documents. Cross-reference the TSSOP-20 package dimensions with IPC standards to validate footprint compatibility during PCB design review.

Selection Notes

Select this component when designing systems requiring octal inverting buffers with three-state outputs. Ensure the application voltage falls within the 2.0 V to 5.5 V range to maintain optimal performance. Consider the 24 mA drive capability for load requirements and verify that the 4 ns propagation delay meets the system's timing constraints. Check thermal dissipation limits if multiple units are used in close proximity.

Part Context

This component belongs to the TC74VHC series of CMOS logic ICs, which are optimized for high-speed operations and low power consumption. The VHC designation indicates advanced technology compatible with various logic families. As an octal buffer, it consolidates eight independent channels into a single package, reducing board space compared to individual single-gate solutions while maintaining signal isolation between channels.

Replacement Considerations

Direct substitutes may include other octal inverting buffers with three-state outputs from compatible manufacturers, provided pinouts and electrical characteristics match. Verify voltage ranges and drive currents before substitution. Generic equivalents like the 74VHC540 family parts should be checked for specific package and speed grade alignment.