74LVC2G126GS,115

Overview

The 74LVC2G126GS,115 is a dual bus buffer and line driver featuring 3-state outputs controlled by active HIGH output enable inputs (nOE). It operates within a supply voltage range of 1.65 V to 5.5 V and accepts overvoltage tolerant inputs up to 5.5 V. The device incorporates Schmitt-trigger action at all inputs for tolerance to slower rise and fall times. It includes IOFF circuitry to disable outputs during partial power-down, preventing damaging backflow currents. The component is specified for operation from -40 °C to +125 °C and complies with JEDEC standards for various voltage levels.

Feature Summary

• Dual buffer/line driver with 3-state outputs controlled by nOE inputs
• IOFF circuitry enables partial power-down mode to prevent backflow current
• Schmitt-trigger inputs provide tolerance for slow signal transitions
• Overvoltage tolerant inputs allow direct interface with 3.3 V or 5 V devices

Applications

• Mixed voltage translation between 3.3 V and 5 V environments
• Partial power-down applications requiring backflow prevention
• Bus buffering in systems with slow input transition rates

Procurement Notes

Verify the specific package variant SOT1203 (XSON8) matches the design footprint requirements. Confirm that the ordering suffix ,115 corresponds to the correct tape and reel configuration intended for the manufacturing process. Ensure the selected temperature range aligns with the operational environment specifications.

Selection Notes

Select this component when a dual channel buffer with high noise immunity and low power consumption is required. The wide supply voltage range supports diverse logic families. The inclusion of IOFF makes it suitable for systems where power sequencing may cause back-feeding issues on shared buses.

Part Context

This part belongs to the Nexperia 74LVC family of logic ICs. It utilizes the XSON8 package (SOT1203), which measures 1.35 x 1.0 x 0.35 mm. The marking code for this specific package version is VN. It is distinct from other variants like the GT or GF packages which share the same logical function but differ in physical dimensions.

Replacement Considerations

Other 74LVC2G126 variants such as 74LVC2G126GT,115 or 74LVC2G126GF,115 offer identical electrical performance but utilize different package outlines (SOT833-1 or SOT1089 respectively). Substitution requires verifying PCB land pattern compatibility.