SN74HC126DT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC126DT 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
• Balanced CMOS 3-state outputs allow for fast edges into light loads while maintaining high-impedance states
• Standard CMOS inputs are high impedance and require fast edge rates to prevent oscillations

Buffers, Drivers, Receivers, Transceivers Applications

• Enable digital signals
• Control data bus connections
• Disable circuitry connected to outputs for power saving

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type and revision status before procurement. Confirm that the ordering suffix matches the required thermal and electrical specifications. Check for any product change notices or obsolescence alerts associated with this part number. Ensure compatibility with existing design constraints regarding voltage levels and signal integrity requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quadruple buffer with controlled output enable is required. Consider the 2 V to 6 V operating voltage range and the -40°C to +85°C temperature limits. Evaluate the need for 3-state outputs to manage bus contention. Assess input signal edge rates to ensure they meet recommended transition times to avoid excessive current consumption.

Buffers, Drivers, Receivers, Transceivers Part Context

The SN74HC126 belongs to the SNx4HC126 family of quadruple buffers with 3-state outputs. It is part of the broader 74HC series of logic integrated circuits designed for general-purpose digital applications. The device is available in various packages including SOIC, SSOP, PDIP, and TSSOP, offering flexibility for different board layout requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC126DR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused channels?

Unused channels should have their inputs terminated at ground or VCC, and the outputs can be left unconnected.

What happens when the output is disabled?

When disabled, the output enters a high-impedance state where it neither sources nor sinks current, with leakage defined by the IOZ specification.