TC74AC541F(EL,F)

Overview

The TC74AC541F(EL,F) is an octal bus buffer from the Toshiba AC logic series, featuring non-inverting outputs and three-state capability. It operates within a supply voltage range of 2.0 to 5.5 V. The device achieves high-speed operation with a typical propagation delay of 4.0 ns at 5 V. It provides symmetrical output drive currents of 24 mA minimum for both high and low states. Quiescent current is limited to 8 μA maximum at 25°C. The component utilizes silicon gate and double-layer metal wiring C2MOS technology.

Feature Summary

• Advanced high-speed CMOS technology providing performance comparable to Bipolar Schottky TTL while maintaining low power dissipation.
• Symmetrical output impedance capable of driving 50 Ω transmission lines directly.
• Wide operating voltage range supporting 2 V to 5.5 V applications.
• Input protection circuits designed against static discharge or transient excess voltage.

Applications

• High-speed data bus buffering in digital systems
• Driving 50 Ω transmission lines
• Clock distribution networks requiring balanced propagation delays

Procurement Notes

Verify the specific package suffix (F indicates SOP-20) matches the required footprint. Confirm RoHS compliance status through official Toshiba documentation prior to integration. Ensure design adheres to absolute maximum ratings regarding supply voltage and input/output voltages to prevent device deterioration.

Selection Notes

Select this component when non-inverting octal buffering with three-state control is required. The AC series offers higher speed than standard HC/HCT families. Verify that the 2.0 V to 5.5 V operating range aligns with the system power rails. Consider the 24 mA drive strength for direct line driving requirements.

Part Context

This part belongs to the TC74AC540/541 family of octal bus buffers. The TC74AC541 variant specifically provides non-inverting outputs, whereas the TC74AC540 provides inverting outputs. Both share identical pinouts and electrical characteristics except for signal polarity. The 'F' suffix denotes the SOP-20 surface mount package.

Replacement Considerations

The datasheet explicitly states pin and function compatibility with the 74F540 and 74F541 logic families. Designers replacing older bipolar TTL components should verify voltage level compatibility between the 2V–5.5V AC range and existing circuitry.