74LVC543ADB,118

Overview

The NXP USA Inc. 74LVC543ADB,118 is an octal D-type registered transceiver housed in a 24-lead SSOP package (SOT340-1). It operates within a supply voltage range of 1.2 V to 3.6 V and supports 5 V tolerant inputs and outputs for interfacing with 5 V logic systems. The device features separate controls for data flow direction, including latch enable and output enable inputs for each register set. It provides high-impedance states when VCC is 0 V and includes ESD protection exceeding 2000 V per HBM standards.

Feature Summary

• Octal registered transceiver architecture containing two sets of D-type latches for temporary data storage in either direction.
• Independent control of data flow direction via separate latch enable and output enable inputs for A-to-B and B-to-A paths.
• 5 V tolerant inputs and outputs allowing direct interfacing with 5 V logic families while operating at lower voltages.
• High-impedance output state maintained when the supply voltage is 0 V to prevent back-powering during power-down conditions.

Applications

• Bus-oriented applications requiring bidirectional data transfer with registered storage capabilities.
• Interfacing low-voltage logic circuits with 5 V logic systems utilizing 5 V tolerant I/O characteristics.
• Systems requiring independent control of data flow direction and output states for complex bus architectures.

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the SSOP-24 package variant (SOT340-1) as defined in the manufacturer's ordering information table. Confirm that the required temperature range matches the specified -40 °C to +125 °C operational limits. Ensure compatibility with the 1.2 V to 3.6 V supply voltage requirements for the target application design.

Selection Notes

Select this component when an octal transceiver with internal registration is required for bidirectional data buses. The 5 V tolerance feature makes it suitable for mixed-voltage environments where direct connection to 5 V logic is necessary without level shifting. Consider the SSOP package dimensions if space constraints align with the SOT340-1 outline specifications.

Part Context

This device belongs to the 74LVC543A family of octal D-type registered transceivers. The 'ADB' designation specifically identifies the SSOP-24 plastic package variant manufactured by Nexperia/NXP. It serves as a registered buffer solution for systems needing directional control and data storage within the transceiver path.

Replacement Considerations

Check for other 74LVC543A variants such as the SO24 or TSSOP24 packages if pinout compatibility allows. Verify that any substitute maintains the same 5 V tolerant input/output specifications and 3-state output functionality.