74LVTH543WMX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74LVTH543WMX is a low-voltage octal registered transceiver with 3-STATE outputs, fabricated using advanced BiCMOS technology. It operates within a supply voltage range of 2.7V to 3.6V and supports an input voltage up to 5.5V, enabling TTL interface compatibility in 5V environments. The device features two sets of D-type latches for temporary data storage, allowing independent control of data flow direction between Side A and Side B ports. It provides high-speed operation similar to 5V ABT devices while maintaining low power dissipation.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features bushold data inputs that eliminate the need for external pull-up resistors to hold unused inputs
• Provides power-up/down high impedance capability to ensure glitch-free bus loading during transitions
• Supports live insertion and extraction operations without causing system interference

Buffers, Drivers, Receivers, Transceivers Applications

• Low-voltage (3.3V) memory mapping applications
• Bus-oriented memory and data acquisition systems
• Clocking and buffering applications requiring bidirectional data transfer

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package configuration, as the base part number covers both SOIC and TSSOP variants. Confirm RoHS compliance status through official manufacturer documentation or material declarations. Check for obsolescence notices or product change notifications regarding manufacturing location or mold compound changes before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring bidirectional data transfer with latching capabilities at low voltages. Ensure the design accommodates the 5.5V input tolerance if interfacing with 5V logic sources. Verify that the thermal management strategy aligns with the recommended operating temperature range of -40°C to +85°C for the chosen package type.

Buffers, Drivers, Receivers, Transceivers Part Context

This component belongs to the LVTH series of low-voltage logic integrated circuits. It is functionally compatible with the standard 74 series 543 octal registered transceivers but optimized for lower power consumption and higher speed performance typical of BiCMOS fabrication processes used by Fairchild Semiconductor and its successors.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include Texas Instruments SN74LVTH543PW and SN74LVTH543PWR. These alternatives maintain functional compatibility and pinout consistency for direct replacement in existing designs.