SN74HC126DRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC126DRE4 is a quadruple buffer with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. The device features buffered inputs, balanced CMOS outputs capable of sinking and sourcing similar currents, and standard high-impedance CMOS inputs. It provides significant power reduction compared to LSTTL logic ICs and supports fanout up to 10 LSTTL loads.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Contains four independent buffers with 3-state outputs performing the Boolean function Y = A in positive logic
• Features balanced CMOS 3-state outputs that allow the device to sink and source similar currents
• Includes standard CMOS inputs characterized by high impedance and modeled as a resistor in parallel with input capacitance
• Equipped with positive and negative clamping diodes on both inputs and outputs

Buffers, Drivers, Receivers, Transceivers Applications

• Enabling digital signals
• Controlling data buses via channel enable/disable functions
• System controller interface for data replication or isolation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type (SOIC) and ordering suffix against the manufacturer's current orderable addendum. Confirm RoHS compliance status and lead finish specifications directly with Texas Instruments prior to procurement. Ensure design implementation validates system functionality and suitability for the intended application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quadruple buffer with 3-state output control is required for digital signal routing. Consider the wide operating voltage range of 2 V to 6 V and the industrial temperature range of -40°C to +85°C. Evaluate thermal resistance metrics and load capacitance limits to ensure optimal performance and prevent damage due to over-current or excessive capacitive loading.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC126 family of quadruple bus buffer gates with 3-state outputs. It is designed to replace older LSTTL logic ICs while offering significant power reduction. The device is available in multiple packages including SOIC, SSOP, PDIP, SO, TSSOP, CDIP, and LCCC, providing flexibility for various PCB layout requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include SN74HC126DR and SN74HC126DBR. Verify pin compatibility and electrical characteristics before substitution.