74LVC544AD,118

Overview

The 74LVC544AD,118 is an octal registered inverting transceiver from the LVC logic family. It contains two sets of D-type latches for temporary data storage and bidirectional flow control. The device operates with a supply voltage range of 1.2 V to 3.6 V and features 5 V tolerant inputs/outputs. It provides separate latch enable (LEAB, LEBA) and output enable (OEAB, OEBA) inputs for independent direction control. The component supports partial power-down applications with high-impedance I/Os when VCC = 0V. It complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36.

Feature Summary

• Octal D-type registered transceiver with back-to-back registers for data storage
• Separate controls for data flow direction and latch enablement
• 5 V tolerant inputs and outputs for interfacing with 5 V logic
• Supports partial power-down applications with high-impedance states

Applications

• Bidirectional data bus buffering
• Temporary data storage in digital systems
• Interfacing between different voltage domains
• Partial power-down circuit implementations

Procurement Notes

Verify the specific package variant required, as the AD suffix denotes SO24 (SOT137-1). Confirm temperature range requirements, as this part is rated for -40 °C to +125 °C. Ensure design compatibility with the 1.2 V to 3.6 V supply voltage range. Check for RoHS compliance status if required by project specifications. Validate pinout alignment with existing PCB footprints for SO24 packages.

Selection Notes

Select this component for applications requiring bidirectional data transfer with registered storage. It is suitable for systems needing 5 V tolerance on I/O lines while operating at lower core voltages. Consider the separate enable controls for precise timing management. Evaluate thermal dissipation requirements for SO24 packaging in enclosed environments. Compare against non-registered transceivers if latching functionality is not needed.

Part Context

This part belongs to the 74LVC544A series of octal registered transceivers. It is manufactured by Nexperia (formerly NXP Semiconductors). The device is designed for low-voltage CMOS applications. It offers high-speed performance with low power consumption. The SO24 package provides a compact solution for dense PCB layouts.

Replacement Considerations

Check for equivalent parts within the 74LVC544A family, such as SSOP or TSSOP variants, if package changes are acceptable. Verify functional compatibility with other octal registered transceivers from different manufacturers. Ensure pinout and electrical characteristics match before substitution.