74LCX16652MTDX

Overview

The Fairchild Semiconductor 74LCX16652MTDX is a dual 8-bit registered bus transceiver from the LVC/LCX/Z series. It features true outputs and operates at low voltage levels of 2.0V or 3.3V, while providing 5V tolerant inputs and outputs for safe interfacing with 5V signal environments. The device utilizes an advanced CMOS technology and includes D-type flip-flops for data storage. It is housed in a 56-pin TSSOP package (MO-153) designed for surface-mount applications.

Feature Summary

• Provides independent output enable control for each transmission direction to manage data flow effectively.
• Supports multiplexed transmission of data directly from input buses or from internal registers via clocked operations.
• Ensures compatibility with mixed-voltage systems through 5V tolerant I/O capabilities despite low voltage operation.

Applications

• Low voltage memory interface circuits requiring registered data buffering
• Bidirectional bus architectures utilizing 5V tolerant signaling standards
• System-level data routing where multiplexed input/register transmission is required

Procurement Notes

Verify the manufacturer marking on the component body to distinguish between original Fairchild/ON Semiconductor production and potential third-party rebrands. Confirm the presence of the specific suffix 'MTDX' which indicates the tape and reel packaging format. Ensure the device meets RoHS compliance requirements if applicable to your assembly process. Cross-reference the date code against current supply chain availability to avoid obsolete stock issues.

Selection Notes

Select this component when designing systems that require bidirectional data transfer between low voltage logic domains and 5V peripherals. The registered nature of the transceiver makes it suitable for applications needing data latching during transmission. Consider the 56-pin TSSOP footprint for PCB layout constraints. This part is appropriate for high-density designs where space efficiency and voltage translation are critical requirements.

Part Context

This device belongs to the LCX family, which bridges the performance gap between older LVC and newer LVCH technologies. It offers similar functionality to the unregistered 74LCX245 but adds internal storage capabilities. The dual 8-bit configuration allows for parallel data handling across two independent channels within a single integrated circuit package.

Replacement Considerations

The SN74LVCH16652ADGGR is a documented alternative from Texas Instruments offering similar dual 8-bit registered transceiver functionality. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement supports the same 5V tolerant input/output characteristics and operating voltage range.