74LVC257AD,112

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74LVC257AD,112 is a quad 2-input multiplexer with 3-state outputs housed in an SO16 plastic small outline package (SOT109-1). It operates on a supply voltage range of 1.2 V to 3.6 V and features inputs tolerant up to 5.5 V. The device includes Schmitt-trigger inputs for noise immunity and IOFF circuitry for partial power-down protection. Recommended operating conditions specify an ambient temperature range from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides four independent 2-to-1 multiplexing channels with 3-state output control
• Features overvoltage tolerant inputs capable of handling signals up to 5.5 V while powered by lower voltages
• Includes IOFF circuitry to disable outputs and prevent backflow current during partial power-down states
• Schmitt-trigger action at all inputs ensures tolerance for slower input rise and fall times

Signal Switches, Multiplexers, Decoders Applications

• Translating signals between mixed 3.3 V and 5 V logic environments
• Routing data sources in digital systems requiring selectable input paths
• Buffering and driving 50 Ω transmission lines at elevated temperatures

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix '112' corresponds to the SO16 (SOT109-1) package variant when sourcing. Confirm that the required temperature range meets the -40 °C to +125 °C specification. Ensure design compatibility with the 5.5 V input tolerance limits if interfacing with higher voltage logic levels.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer with 3-state outputs is required for mixed-voltage applications. The 5 V tolerant I/O capability allows direct interfacing with legacy 5 V devices without level shifters. The wide supply voltage range supports low-power operation down to 1.2 V.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74LVC257A family of quad 2-input multiplexers. The 'AD' designation specifically identifies the SO16 package version, distinct from TSSOP or QFN variants within the same logical family. It shares functional characteristics with other LVC series devices but is defined by its specific pinout and thermal properties.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include the 74LVC257APW (TSSOP16) and 74LVC257ABQ (DHVQFN16) which share identical electrical specifications. Cross-manufacturer equivalents must be verified for pin compatibility and voltage tolerance limits.