74LVCH245AD,118

Overview

The Nexperia 74LVCH245AD,118 is an octal bus transceiver with 3-state outputs housed in a SO20 plastic small outline package (SOT163-1). It operates on a supply voltage range of 1.2 V to 3.6 V and features overvoltage tolerant inputs capable of accepting voltages up to 5.5 V. The device includes Schmitt-trigger action for noise immunity and IOFF circuitry to prevent damaging backflow currents during partial power-down states. It supports mixed 3.3 V and 5 V environments and complies with JEDEC standards.

Feature Summary

• Bus hold functionality on all data inputs
• IOFF circuitry for partial power-down protection
• Overvoltage tolerant inputs up to 5.5 V
• Schmitt-trigger action at all inputs

Applications

• Mixed 3.3 V and 5 V environment translation
• Partial power-down applications
• Driving bus lines or buffer memory address registers

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the standard tape-and-reel packaging format defined by Nexperia for this part number. Confirm that the SO20 package variant matches the required PCB footprint dimensions. Ensure the procurement source provides the latest product data sheet revision to validate current manufacturing status and any potential design changes.

Selection Notes

Select this component when bidirectional data transfer between two buses is required with direction control via the DIR pin. The LVCH series is appropriate for applications needing CMOS low-power consumption combined with direct interface capabilities to TTL levels. Consider the 74LVC245A variant if bus hold functionality is not required for the specific application design.

Part Context

This component belongs to the 74LVC/LVCH245A family of octal bus transceivers manufactured by Nexperia. The 'H' designation indicates the inclusion of active bus hold circuits on all data inputs, distinguishing it from the standard 74LVC245A. The AD suffix specifies the SO20 package type, which is a 20-lead plastic small outline package with a body width of 7.5 mm.

Replacement Considerations

The 74LVC245AD,118 serves as a functional substitute where bus hold is unnecessary. For identical performance including bus hold, the 74LVCH245AD,118 is the direct equivalent within the same package.