74LVCH245ADB,112

Overview

The Nexperia 74LVCH245ADB,112 is an octal bus transceiver with 3-state outputs in a SO20 plastic small outline package. It operates on a supply voltage range of 1.2 V to 3.6 V and features Schmitt-trigger inputs for slow signal tolerance. The device includes bus hold circuitry on all data inputs and IOFF circuitry for partial power-down applications. It supports direct interface with TTL levels and overvoltage tolerant inputs up to 5.5 V.

Feature Summary

• Bus hold circuitry maintains valid logic levels on floating data inputs
• IOFF circuitry prevents damaging backflow current during partial power-down
• Schmitt-trigger action ensures tolerance for slower input rise and fall times
• Overvoltage tolerant inputs allow interfacing with voltages up to 5.5 V

Applications

• Mixed 3.3 V and 5 V environments
• Partial power-down applications
• Octal bidirectional bus interfaces

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the SO20 (SOT163-1) package variant as defined in the official Nexperia documentation. Confirm that the component meets the required temperature range specifications for your application environment before finalizing procurement decisions.

Selection Notes

Select this component when an octal transceiver with bus hold functionality is required for low-voltage CMOS applications. Ensure the design accommodates the 1.2 V to 3.6 V supply range and utilizes the IOFF feature if partial power-down states are part of the system architecture.

Part Context

This component belongs to the 74LVC/LVCH245A family of octal bus transceivers manufactured by Nexperia. The LVCH variant specifically distinguishes itself from the standard LVC series by incorporating active bus hold circuitry on all data inputs, providing enhanced stability for unused or floating lines without external components.

Replacement Considerations

The 74LVC245ADB,112 serves as a functional equivalent within the same package but lacks the bus hold feature. Verify compatibility regarding input holding capabilities and electrical characteristics when substituting between the LVC and LVCH variants.