74LVC543APW,112

Overview

The 74LVC543APW,112 is an octal D-type registered transceiver manufactured by NXP USA Inc. It features 3-state outputs and operates within a supply voltage range of 1.2 V to 3.6 V. The device includes back-to-back registers for data storage in either direction, with separate controls for data flow. It provides high-impedance states when VCC is 0V and offers ESD protection exceeding 2000 V (HBM). The component is specified for ambient temperatures from −40 °C to +125 °C and utilizes a 24-pin TSSOP package.

Feature Summary

• Octal D-type registered transceiver with 3-state non-inverting outputs
• Back-to-back registers allow temporary storage of data flow in either direction
• Separate latch enable and output enable inputs permit independent control of data flow
• High-impedance state maintained when VCC equals 0V

Applications

• Bus-oriented applications requiring 3-state control
• Interfacing between 5 V logic systems and low-voltage CMOS devices
• Direct interface with TTL levels

Procurement Notes

Verify the specific ordering suffix and manufacturer details against current official documentation, as product specifications may be subject to change or discontinuation. Confirm that the component meets all required environmental and electrical standards for the intended application before procurement.

Selection Notes

Select this component for designs requiring bidirectional data transfer with latching capabilities. Ensure the operating voltage aligns with the 1.2 V to 3.6 V range and verify that the 24-pin TSSOP package fits the board layout constraints. Consider the temperature range requirements for the specific environment.

Part Context

This part belongs to the 74LVC543A series, which are octal registered transceivers. The 'APW' designation indicates the specific package type and temperature range. The '112' suffix typically denotes packaging details such as tube quantity, though this should be verified with the manufacturer's latest ordering information.

Replacement Considerations

Check for direct pin-compatible replacements from the same family or other manufacturers offering equivalent functionality. Verify that any substitute maintains the same voltage range, package dimensions, and electrical characteristics.

FAQ

What is the function of the LEAB and LEBA pins?

LEAB and LEBA are latch enable inputs that control when data from the A or B side, respectively, is stored in the internal D-type latches.

How does the device handle power-off conditions?

The device enters a high-impedance state when VCC is 0V, preventing current leakage and ensuring safe operation during power-down scenarios.