74LCX16646MTD

Overview

The onsemi 74LCX16646MTD is a 16-bit bus transceiver and register featuring 3-state outputs. It operates within a supply voltage range of 1.65 V to 3.6 V, supporting LVC/LVTTL input levels and LVC output levels. The device provides a low-level output current of 24 mA and a high-level output current of -12 mA. It exhibits a propagation delay of 5.2 ns at 3.3 V. Packaged in a TSSOP-56 format, it functions as a non-inverting circuit with two internal circuits across sixteen channels. The component is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates 16-bit data path functionality with registered storage capability for synchronized data handling.
• Supports mixed-voltage operation by accepting LVC or LVTTL inputs while driving LVC-compatible loads.
• Provides robust drive strength with specified low-level and high-level output currents for reliable signal transmission.

Applications

• High-density memory interface modules requiring 16-bit data width
• Portable consumer electronics utilizing low-voltage logic families
• Industrial control systems operating within extended temperature ranges

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm package type and tape/reel specifications. Ensure compatibility with target system voltage levels, specifically confirming support for the 1.65 V to 3.6 V operational range. Check for moisture sensitivity classification requirements during assembly. Confirm that the TSSOP-56 footprint matches the design layout constraints. Validate that the LVC/LVTTL input thresholds align with the source logic family.

Selection Notes

Select this component when a 16-bit registered bus transceiver is required for low-voltage applications. It is suitable for designs needing LVC/LVTTL compatibility with LVC outputs. Consider the 5.2 ns propagation delay for timing-critical paths. The TSSOP-56 package offers a compact solution for space-constrained boards. Verify that the 24 mA/12 mA drive currents meet the load requirements of the destination devices.

Part Context

This part belongs to the LCX series of low-voltage CMOS logic devices from onsemi. The LCX family is designed for applications requiring compatibility with both LVC and LVTTL logic standards. These devices operate over a wide voltage range, making them ideal for mixed-voltage environments common in modern portable and industrial electronics.

Replacement Considerations

Consult official substitution guides for equivalent parts from other manufacturers. Verify pinout compatibility and electrical characteristics such as propagation delay and drive current before replacing.