74LVC544ADB,118

Overview

The 74LVC544ADB,118 is an octal registered inverting transceiver from the NXP 74LVC series. It contains eight D-type latches with separate inputs and controls for each set. The device supports data flow in either direction between pins A and B. Separate latch enable inputs (LEAB and LEBA) and output enable inputs (OEAB and OEBA) allow independent control of input and output. The component operates within a supply voltage range of 1.2 V to 3.6 V. It features 5 V tolerant inputs/outputs for interfacing with 5 V logic. The package type is SSOP24.

Feature Summary

• Octal D-type registered transceiver with back-to-back registers for temporary storage of data flow.
• Separate latch enable and output enable inputs permit independent control of data flow direction.
• Supports partial power-down applications with high-impedance inputs/outputs when VCC = 0V.
• ESD protection exceeds specified limits for Human Body Model, Machine Model, and Charged Device Model.

Applications

• Interfacing low-voltage systems with 5 V logic devices
• Temporary storage of data flow in bidirectional bus architectures
• Partial power-down applications requiring high-impedance states

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the SSOP24 package variant SOT340-1. Confirm the temperature range matches the required operational environment, as this part number specifies -40 °C to +125 °C. Ensure compatibility with the target system's voltage levels, specifically the 1.2 V to 3.6 V supply requirement and 5 V tolerance on I/O ports.

Selection Notes

Select this component when bidirectional data transfer with registered storage is required. The inverting nature of the transceiver must be accounted for in the logic design. Verify that the application requires separate control over latch enable and output enable functions for precise timing management. Consider the SSOP24 package dimensions if board space is constrained.

Part Context

This component belongs to the 74LVC family of CMOS logic devices. It provides octal buffering and registration capabilities. The device integrates eight D-type latches into a single package. It is designed for low-power consumption while maintaining high-speed performance. The product complies with JEDEC standards for various supply voltage ranges.

Replacement Considerations

Check for other 74LVC544A variants with different package options such as SO24 or TSSOP24 if pinout compatibility allows. Verify functional equivalence for any cross-manufacturer replacements, ensuring matching latch enable and output enable configurations.