74LVC2G126DCURE4

Overview

The SN74LVC2G126DCURE4 is a dual bus buffer gate with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 1.65 V to 5.5 V and supports 5-V VCC operation. The device features inputs that accept voltages up to 5.5 V, enabling it to function as a down translator from 5.5 V inputs to lower VCC levels. It includes Ioff circuitry to support live insertion, partial-power-down mode, and back-drive protection. The maximum propagation delay (tpd) is 4 ns at 3.3 V.

Feature Summary

• Dual bus buffer gate with 3-state outputs designed for 1.65-V to 5.5-V VCC operation
• Ioff circuitry enables live insertion, partial-power-down mode, and back-drive protection
• Inputs accept voltages up to 5.5 V, allowing use as a down translator

Applications

• Live insertion applications
• Partial-power-down mode systems
• Back-drive protection circuits

Procurement Notes

Verify the specific ordering suffix 'E4' against the manufacturer's Package Option Addendum to confirm lead finish and environmental classification details. Ensure the DCU package type matches the required PCB footprint dimensions. Confirm RoHS compliance status and Moisture Sensitivity Level ratings prior to procurement to align with assembly process requirements.

Selection Notes

Select this component when a dual non-inverting buffer with 3-state control is required for low-voltage logic interfacing. The wide input voltage tolerance allows direct connection to 5-V signals even when the system operates at lower voltages. Verify that the output drive current capabilities meet the load requirements for the specific application environment.

Part Context

This part belongs to the SN74LVC2G126 family of dual bus buffers. It utilizes Texas Instruments NanoFree technology for compact packaging. The device is classified as an active product recommended for new designs. It is available in the DCU package variant, which corresponds to the US8 drawing specification.

Replacement Considerations

SN74LVC2G126DCUR