SN74LVTH126DBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH126DBR is a quadruple bus buffer with 3-state outputs manufactured by Texas Instruments. It operates on a single power supply ranging from 2.7 V to 3.6 V and supports mixed-mode signal operation, allowing 5-V input and output voltages while powered by 3.3 V. The device features independent line drivers where each output enters a high-impedance state when the associated output-enable (OE) input is low. It includes active bus-hold circuitry on data inputs to maintain valid logic states without external resistors. The component is housed in a 14-pin SSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation for interfacing 5-V systems with 3.3-V environments
• Features active bus-hold circuitry to eliminate the need for external pullup or pulldown resistors
• Provides Ioff and power-up 3-state support to enable safe hot-insertion applications
• Includes latch-up protection exceeding specified JESD standards

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal buffering between 5-V and 3.3-V logic domains
• Hot-insertion applications requiring controlled power-up and power-down states
• Unregulated battery operation down to 2.7 V
• Bus driver circuits requiring independent control of four channels

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix to confirm the package type matches the design requirements. The DB suffix indicates an SSOP package. Confirm RoHS compliance and lead finish details via the manufacturer's current documentation. Ensure the operating temperature range aligns with the system environment specifications before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require buffering signals between different voltage levels, specifically 5-V inputs with 3.3-V supplies. The LVTH series is suitable for applications needing moderate drive strength and fast switching speeds. Consider the SSOP package constraints regarding board space and thermal dissipation compared to other available packages in the same family.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVTH126 family of quadruple bus buffers. It shares functional similarities with other LVTH devices but differs in pin count and channel configuration. The SN74LVTH126 provides four independent buffers, whereas related parts like the SN74LVTH241 offer eight channels. The DB variant specifically denotes the SSOP packaging option within the broader product line.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH126D is the tube version of the same logical device. SN74LVTH126NSR offers the same functionality in an SOP package. SN74LVTH126PWR provides the function in a TSSOP package. Verify pin compatibility and package dimensions when substituting.