54FCT240TLB

Overview

The 54FCT240TLB is a high-speed CMOS octal buffer and line driver manufactured by Renesas Electronics Corporation. It features two independent 4-bit buffers with tri-state outputs, designed for bus-oriented applications. The device operates within a supply voltage range of 4.5V to 5.5V. It supports through-hole mounting in a 20-lead small outline package (SOP). The component provides balanced propagation delays and low power dissipation, suitable for memory and microprocessor systems.

Feature Summary

• Octal buffer configuration with two independent four-bit sections
• Tri-state output capability for efficient bus management
• High-speed CMOS technology ensuring low power consumption
• Balanced propagation delays for synchronous system operation

Applications

• Memory module address and data buffering
• Clock distribution networks
• Bus driver interfaces in microprocessor systems
• I/O port expansion circuits

Procurement Notes

Verify the specific suffix 'TLB' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Check for recent product change notifications regarding lead-free status or marking updates. Confirm availability as this series may have limited stock or end-of-life implications compared to newer FCT variants.

Selection Notes

Select this component when a dual-channel octal buffer with tri-state control is required for 5V logic systems. Ensure the application demands the specific propagation characteristics of the FCT family. Verify that the 20-lead SOP package fits the PCB layout constraints. Consider thermal dissipation requirements if driving multiple loads simultaneously.

Part Context

This part belongs to the 54FCT240 family of high-speed CMOS logic devices. It is functionally similar to other industry-standard octal buffers but offers specific performance metrics defined by Renesas. The family is widely used in legacy and industrial systems requiring reliable 5V interface buffering.

Replacement Considerations

Direct substitutes include IDT54FCT240TLB or NXP74FCT240TL. Verify pin compatibility and electrical specifications before substitution. Alternative packages such as SOIC or TSSOP may require adapter considerations.