74LVC623APW,118

Overview

The 74LVC623APW,118 is an octal bus transceiver featuring non-inverting 3-state outputs in both send and receive directions. It operates on a supply voltage range of 1.2 V to 3.6 V with inputs tolerant up to 5.5 V. The device supports asynchronous two-way communication between data buses via dual enable inputs (OEAB and OEBA). It provides high-impedance isolation when disabled and allows data storage by simultaneous enabling of control pins. The component complies with JEDEC standards for various voltage ranges and offers ESD protection exceeding specified thresholds.

Feature Summary

• Dual enable function configuration allowing flexible timing control and data storage capability
• 5 V tolerant inputs and outputs for interfacing with mixed 3.3 V or 5 V logic applications
• High-impedance state when VCC = 0V for safe hot-plugging operations
• Direct interface compatibility with TTL levels

Applications

• Asynchronous two-way communication between data buses
• Mixed 3.3 V and 5 V voltage level translation
• Bus driver applications requiring isolated high-impedance states

Procurement Notes

Verify the specific package variant against project requirements, as the 74LVC623A family includes SO20, SSOP20, and TSSOP20 options. Confirm that the ordering suffix matches the desired thermal and physical specifications. Ensure design compliance with the absolute maximum ratings regarding input and output voltages to prevent permanent damage during operation.

Selection Notes

Select this component for designs requiring bidirectional octal data transfer with independent direction control. The dual enable feature distinguishes it from standard single-enable transceivers by permitting data latching on the bus lines. Verify that the operating temperature range meets environmental constraints, as the device is rated for extended industrial temperatures up to +125 °C.

Part Context

This part belongs to the NXP 74LVC series of low-voltage CMOS logic devices. The LVC family is designed for low-power applications while maintaining high-speed performance. The 74LVC623A specifically addresses the need for complex bus architectures where multiple data paths require independent tri-state control without external gating logic.

Replacement Considerations

Cross-reference with other 74LVC623 variants such as 74LVC623AD or 74LVC623ADB if different package footprints are required. Ensure functional equivalence regarding the dual enable pinout and electrical characteristics before substitution.