TC74HCT540AP(F)

Overview

The TC74HCT540AP(F) is an octal buffer and line driver manufactured by Toshiba Semiconductor and Storage. It belongs to the 74HCT logic series, utilizing CMOS technology for high-speed operation with low power dissipation. The device features eight inverting outputs with three-state capability, controlled by separate enable inputs. It operates within a supply voltage range of 4.5V to 5.5V. The component provides an output drive current of 6mA for both high and low states. It is housed in a 20-pin DIP package designed for through-hole mounting.

Feature Summary

• Octal configuration providing eight independent inverting buffer channels within a single integrated circuit
• Three-state output architecture allowing multiple drivers to share bus lines without electrical conflict
• CMOS construction ensuring low static power consumption while maintaining compatibility with TTL logic levels

Applications

• Bus-oriented memory and address driver circuits
• Clock distribution buffers for digital systems
• Signal isolation between different logic domains

Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the procurement channel provides genuine components from authorized distributors to guarantee reliability. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Cross-reference the package dimensions with your PCB footprint library before finalizing orders.

Selection Notes

Select this component when designing systems requiring octal buffering with inverting functionality and three-state control. The HCT series ensures voltage level compatibility with standard TTL inputs, simplifying interface design with legacy or mixed-logic systems. Consider the 20-DIP package for prototyping or applications requiring through-hole assembly. Evaluate the 6mA drive strength against load requirements to ensure signal integrity across the operating temperature range.

Part Context

This part is a member of the Toshiba TC74HCT540 family, which includes variants with different packaging options such as SOP and SSOP. The base product number 74HCT540 defines the core logical function and electrical specifications common across the series. Variations typically involve physical form factors rather than changes in internal circuitry or performance metrics.

Replacement Considerations

Direct substitutes include the SN74HCT540N from Texas Instruments. Verify pin compatibility and electrical parameters against the original specification sheet before implementation.