74LCX16500MTD

Overview

The Fairchild Semiconductor 74LCX16500MTD is a low-voltage 18-bit universal bus transceiver featuring registered outputs. It operates within a supply voltage range of 2V to 3.6V and supports 5V tolerant inputs and outputs, enabling direct interfacing with 5V signal environments. The device utilizes a 56-pin TFSOP package (0.240 inch width) and functions as a registered bus transceiver in the LVC/74LCX logic family.

Feature Summary

• Provides registered output buffering for stable data transmission across wide buses
• Supports bidirectional data transfer between two 9-bit buses or unidirectional transfer between an 18-bit bus and a 9-bit bus
• Features 5V tolerant I/O structures allowing safe operation when interfacing with legacy 5V systems

Applications

• High-density memory modules requiring registered data buffering
• System boards connecting high-speed processors to peripheral buses
• Industrial control systems utilizing mixed voltage logic levels

Procurement Notes

Verify the specific suffix 'MTD' confirms the 56-pin TFSOP package configuration. Ensure the component meets RoHS compliance requirements if mandated by your assembly standards. Confirm that the manufacturer designation aligns with current Fairchild or ON Semiconductor product lines to avoid sourcing discrepancies during procurement.

Selection Notes

Select this component when an 18-bit registered interface is required between 2.5V/3.3V logic domains and 5V tolerant peripherals. The registered output feature distinguishes it from standard latched transceivers, making it suitable for applications demanding precise timing control and noise immunity on wide data paths without external latch components.

Part Context

This part belongs to the 74LCX series, designed for low-voltage CMOS applications. It serves as a registered variant within the universal bus transceiver category, offering higher integration than non-registered counterparts. The device addresses the need for robust data handling in mixed-voltage system architectures common in modern embedded electronics.

Replacement Considerations

The 74LCX16500MEA is a documented equivalent from Fairchild Semiconductor. Verify pinout compatibility and electrical specifications before substitution. Other generic registered bus transceivers may require significant circuit redesign due to differing control logic or package constraints.