74LCXR162245MTX

Overview

The onsemi 74LCXR162245MTX is a low-voltage, 16-bit bidirectional bus transceiver designed for high-speed data transfer. It operates within a supply voltage range of 2.0 V to 3.6 V and features 5 V tolerant inputs and outputs, allowing safe interfacing with mixed-voltage systems. The device incorporates 26 Ω series resistors in the output paths to minimize signal reflections and electromagnetic interference (EMI). Packaged in a 48-pin TSSOP-Wide format, it supports asynchronous communication between two buses.

Feature Summary

• Provides bidirectional data transmission across 16 channels with true output logic.
• Features 5 V tolerant I/Os compatible with mixed-voltage environments.
• Integrates 26 Ω series output resistors for controlled slew rates and EMI reduction.

Applications

• High-speed memory bus interfaces
• Data acquisition systems
• Industrial control networks

Procurement Notes

Verify the specific suffix 'MTX' against the manufacturer's current datasheet to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with the target PCB footprint, as the Wide TSSOP-48 package has distinct pin spacing compared to standard variants. Confirm RoHS compliance status if required by project regulations.

Selection Notes

Select this component when designing systems requiring 16-bit wide data paths with mixed 2.5 V/3.3 V and 5 V logic levels. The integrated series resistors make it suitable for applications where signal integrity is critical without external termination components. Compare propagation delay specifications against system clock requirements to ensure timing margins are met.

Part Context

This device belongs to the 74LCX family of CMOS logic devices, known for low power consumption and high speed. It serves as a bridge between different voltage domains, enabling seamless communication between low-voltage processors and 5 V peripherals. The 16-bit width reduces board space compared to using multiple 8-bit transceivers.

Replacement Considerations

Check for direct equivalents such as the 74LVC162245 or 74LVTH162245 from other manufacturers, ensuring voltage ranges and pinouts match. Verify that any substitute maintains the 5 V tolerance and 26 Ω resistor integration if EMI performance is a constraint.