74LVC623APW,112

Overview

The NXP USA Inc. 74LVC623APW,112 is an octal bus transceiver featuring non-inverting 3-state outputs in both send and receive directions. It operates with 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. The device includes dual enable inputs (OEAB and OEBA) that allow flexible timing control, data transmission between An and Bn buses, or isolation. It complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36.

Feature Summary

• Dual enable function configuration allows maximum flexibility in timing and enables data storage by simultaneous enabling of control pins.
• High electrostatic discharge protection exceeding specified thresholds for Human Body Model, Machine Model, and Charged Device Model.
• Maintains high-impedance state when the supply voltage is zero, allowing safe insertion into live systems.

Applications

• Asynchronous two-way communication between data buses
• Mixed 3.3 V or 5 V applications requiring level translation
• Bus-oriented memory and command decoders

Procurement Notes

Verify the specific ordering suffix '112' against official NXP documentation to confirm package type and temperature range specifications. Ensure the procurement source provides valid traceability for the TSSOP20 plastic thin shrink small outline package. Confirm compliance with RoHS directives as indicated in the product data sheet before finalizing acquisition.

Selection Notes

Select this component for designs requiring bidirectional octal data transfer with independent direction control. The wide supply voltage range accommodates various low-voltage logic families. Verify that the operating ambient temperature falls within the specified -40 °C to +125 °C range for the selected package variant.

Part Context

This part belongs to the 74LVC623A family of octal transceivers manufactured by NXP Semiconductors. The APW suffix indicates a TSSOP20 package with a body width of 4.4 mm. The device is designed for high-speed asynchronous communication and is compatible with standard CMOS logic levels across multiple voltage domains.

Replacement Considerations

Consult the manufacturer's cross-reference tools for verified substitutes. Ensure any replacement maintains the same pinout, voltage tolerance, and functional behavior regarding the dual enable inputs.

FAQ

How does the dual enable function operate?

The device features two active-low enable inputs, OEAB and OEBA. Enabling both simultaneously allows the transceiver to store data by reinforcing its input, keeping both bus sets at their last states if other sources are high-impedance.

What is the behavior when VCC is 0V?

When the supply voltage is 0V, the outputs enter a high-impedance OFF-state. This feature allows the device to be safely inserted into a system without disrupting active signals on the bus lines.