74LVC623AD,118

Overview

The 74LVC623AD,118 is an octal bus transceiver featuring non-inverting 3-state outputs in both send and receive directions. It operates within a supply voltage range of 1.2 V to 3.6 V and supports inputs up to 5.5 V. The device utilizes dual enable inputs (OEAB and OEBA) for flexible timing control and data storage capabilities. It is housed in a SOIC-20 package with a specified operating temperature range from -40 °C to +125 °C.

Feature Summary

• Dual enable configuration allows asynchronous two-way communication or data storage by simultaneously enabling both buses.
• High-impedance state when VCC = 0V enables safe partial power-down applications without destructive backflow currents.
• Inputs are tolerant to 5.5 V, allowing direct interfacing between 3.3 V logic and 5 V devices.

Applications

• Asynchronous two-way communication between data buses
• Mixed 3.3 V and 5 V voltage translation applications
• Partial power-down systems requiring high-impedance isolation

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the standard tape-and-reel packaging format intended for automated assembly. Confirm that the SOIC-20 package dimensions align with the target PCB footprint requirements. Ensure the selected component meets the required industrial temperature specifications for the final application environment.

Selection Notes

Select this component when bidirectional data transfer with independent direction control is required. The dual enable feature provides flexibility for complex bus architectures where data latching is necessary. Verify that the 5 V tolerant input capability matches the driving source voltage levels to ensure reliable signal integrity across mixed-voltage domains.

Part Context

This part belongs to the 74LVC623A family of octal transceivers manufactured by NXP Semiconductors. The 'D' suffix indicates the SOIC-20 plastic small outline package variant. This series is designed for low-power CMOS applications requiring high noise immunity and compatibility with standard logic families.

Replacement Considerations

Check for equivalent octal transceivers with dual enable functionality. Verify pinout compatibility and electrical characteristics such as propagation delay and output drive strength before substitution.