TC74VHC541F(EL,K,F

Overview

The TC74VHC541F(EL,K,F) is an octal bus buffer fabricated with silicon gate C2MOS technology. It provides non-inverted, three-state outputs and operates within a supply voltage range of 2.0 V to 5.5 V. The device achieves high-speed operation with typical propagation delays of 3.7 ns at 5 V. It features power-down protection on all inputs, allowing 0 to 5.5 V input levels regardless of the supply voltage. Quiescent current is limited to a maximum of 4 µA at 25°C.

Feature Summary

• High-speed operation comparable to Bipolar Schottky TTL while maintaining low CMOS power dissipation
• Power-down protection enables safe interfacing between mismatched supply voltages such as 5 V and 3 V systems
• Balanced propagation delays ensure symmetrical signal timing characteristics

Applications

• Interfacing 5 V logic systems to 3 V logic systems
• Battery backup system architectures requiring dual supply compatibility
• Octal bus buffering applications in digital circuits

Procurement Notes

Verify the specific package suffix (F or FK) against the required footprint, as F denotes SOP-20 and FK denotes VSSOP-20. Confirm RoHS compliance status directly with Toshiba Semiconductor and Storage representatives prior to ordering. Ensure design adheres to the specified operating temperature range of -40°C to 85°C for reliable performance.

Selection Notes

Select this component when non-inverting octal buffering with three-state control is required. It serves as a pin-compatible alternative to 74ALS541 devices. Consider the wide operating voltage range for mixed-voltage environments. Verify that the input protection circuitry meets the interface requirements for systems with varying supply potentials.

Part Context

This part belongs to the TC74VHC series of advanced high-speed CMOS logic devices manufactured by Toshiba Semiconductor and Storage. The family utilizes C2MOS technology to deliver performance similar to bipolar equivalents. The TC74VHC541 specifically provides non-inverting functionality, contrasting with the inverted TC74VHC540 variant within the same product line.

Replacement Considerations

The datasheet explicitly states pin and function compatibility with 74ALS540/541 devices. Designers replacing legacy 74ALS541 components should verify voltage level compatibility and drive strength differences between the older bipolar technology and the modern CMOS implementation.