SN74LV126AD

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LV126AD is a quadruple bus buffer gate with 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 5.5V and supports mixed-mode voltage operation on all ports. The device features independent line drivers where each output is disabled when the associated output-enable (OE) input is low. It provides Ioff support for live insertion, partial power down mode, and back drive protection. The maximum propagation delay is 6.5ns at 5V, with typical output ground bounce of 2.3V at VCC = 3.3V. Latch-up performance exceeds 250mA per JESD 17.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode voltage operation across all ports
• Enables live insertion and partial power down via Ioff
• Provides independent line drivers with 3-state outputs

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• Network switches
• Electronic point of sales systems
• Television sets
• Set-top boxes

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type and status before procurement, as the SN74LV126AD designation indicates an obsolete production status in current TI documentation. Confirm availability of active alternatives such as the SN74LV126ADR or SN74LV126ADBR if long-term supply is required. Ensure design reviews account for the transition from obsolete to active part numbers to maintain system continuity and compliance with current manufacturing standards.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring bus buffering between different voltage domains, specifically where inputs must accept voltages up to 5.5V while operating at lower VCC levels. Consider the device's low-drive characteristics to minimize output ringing and overshoot in sensitive bus interface designs. Verify that the 3-state output configuration aligns with the system's need for controlled bus contention management during high-impedance states.

Buffers, Drivers, Receivers, Transceivers Part Context

The SN74LV126A belongs to the LV/LV-A/LVX/H series of logic devices from Texas Instruments. This family is designed for low-voltage CMOS applications, offering compatibility with various digital logic families. The SN74LV126AD specifically utilizes a 14-pin Small Outline Integrated Circuit (SOIC) package, providing a compact footprint suitable for surface-mount assembly in space-constrained electronic designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers include SN74LV126ADR and SN74LV126ADBR.