74LVC2G126GD/S470,

Overview

The Nexperia 74LVC2G126GD/S470 is a dual bus buffer and line driver featuring three-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 includes Schmitt-trigger inputs for noise immunity. The device incorporates IOFF circuitry to prevent backflow current during partial power-down states. Inputs are overvoltage tolerant up to 5.5 V, allowing direct interfacing with 3.3 V or 5 V devices in mixed-voltage environments.

Feature Summary

• Dual buffer/line driver with three-state outputs controlled by nOE inputs
• IOFF circuitry enables safe partial power-down mode operation
• Schmitt-trigger action provides tolerance for slow input rise and fall times
• Overvoltage tolerant inputs allow use as translators in mixed voltage systems

Applications

• Mixed 3.3 V and 5 V voltage level translation
• Partial power-down applications requiring backflow prevention
• Bus-oriented communications and data transmission lines

Procurement Notes

Verify the specific package variant corresponding to the GD suffix against the manufacturer's ordering information table. Confirm that the S470 suffix aligns with the required marking code and reel specifications for your manufacturing process. Ensure compatibility with the specified temperature range and JEDEC standards before finalizing procurement orders.

Selection Notes

Select this component when a dual buffer with three-state control and partial power-down protection is required. It is suitable for designs needing Schmitt-trigger inputs to handle slower signal transitions. Verify that the operating voltage range and output drive capabilities meet the system requirements for both low and high logic levels across the intended temperature spectrum.

Part Context

This part belongs to the 74LVC2G126 family of dual bus buffers. The GD suffix typically denotes an XSON8 package variant. The series is designed for low power consumption and high noise immunity, complying with various JEDEC standards for different supply voltage ranges. It serves as a standard interface solution for digital logic systems requiring bidirectional or unidirectional buffering.

Replacement Considerations

Direct replacements include other 74LVC2G126 variants with compatible packages such as GT, GF, GN, or GS. Ensure the substitute maintains the same pinout and electrical characteristics, particularly the IOFF functionality and Schmitt-trigger inputs, to guarantee functional equivalence in existing designs.