74LCXH2245MSAX

Overview

The onsemi 74LCXH2245MSAX is an octal bus transceiver featuring non-inverting bidirectional buffers with three-state outputs. It operates within a supply voltage range of 2.0V to 3.6V and utilizes advanced CMOS technology for high-speed performance with low power dissipation. The device incorporates active bushold circuitry on data inputs, eliminating the need for external pull-up or pull-down resistors. It includes integrated series resistors in the B port outputs to reduce overshoot and undershoot. The component supports 5V tolerant control inputs and provides latch-up protection exceeding 500mA.

Feature Summary

• Integrates active bushold circuitry on all data inputs to maintain valid logic levels without external components
• Features built-in series resistors on B port outputs to minimize signal overshoot and undershoot
• Provides 5V tolerant control inputs allowing safe interfacing with higher voltage logic systems
• Delivers high-speed operation through advanced CMOS fabrication while maintaining low quiescent current

Applications

• Bus-oriented memory and disk controller applications
• High-density data acquisition systems
• Consumer products requiring low voltage operation
• Computing and industrial control environments

Procurement Notes

Verify that the ordering code suffix MSAX corresponds to the 20-lead shrink small outline package (SSOP) configuration. Confirm RoHS compliance status as specified by JEDEC J-STD-020B standards. Ensure the procurement documentation explicitly references the Fairchild Semiconductor datasheet DS500409 for accurate electrical parameter validation.

Selection Notes

Select this component when designing systems requiring bidirectional data transfer between buses operating at low voltages. The inclusion of bushold functionality simplifies board layout by removing the requirement for discrete pull-up resistors. Consider the integrated series resistance on the B port if signal integrity improvements are necessary for specific load conditions.

Part Context

This device belongs to the LCXH family of low-voltage bidirectional transceivers manufactured by Fairchild Semiconductor, now part of onsemi. The family is characterized by its ability to operate across standard low-voltage domains while providing robust noise immunity. The MSAX designation specifically identifies the SSOP package variant within the broader 74LCXH2245 product line.

Replacement Considerations

Direct replacements include the 74LCXH2245SJ and 74LCXH2245MTC from the same manufacturer family. Verify pinout compatibility and package dimensions before substitution. Cross-manufacturer equivalents may require evaluation of specific electrical characteristics such as propagation delay and output drive strength.