SN74HC126PWT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC126PWT 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 supports fanout up to 10 LSTTL loads while providing significant power reduction compared to LSTTL logic ICs.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Contains four independent buffers performing the Boolean function Y = A in positive logic
• Outputs can be placed into a high-impedance state via individual output enable pins
• Balanced CMOS outputs allow for fast edges into light loads

Buffers, Drivers, Receivers, Transceivers Applications

• Enabling digital signals
• Controlling data buses
• Disabling circuitry connected to outputs to save system power

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type matches the design requirements, as the SN74HC126 family includes multiple options such as SOIC, SSOP, PDIP, and TSSOP. Confirm that the ordering suffix corresponds to the desired packaging format. Ensure compliance with RoHS standards and check for any recent product change notices regarding assembly sites or material specifications before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quadruple buffer with independent 3-state control is required for bus management or signal enabling. Consider the wide operating voltage range suitable for various logic families. Evaluate thermal performance if driving heavy capacitive loads, as routing and load conditions should be managed to prevent ringing. Ensure unused inputs are terminated to prevent undefined operational states.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC126 series of quadruple buffers with 3-state outputs. The 'PWT' designation specifically identifies the TSSOP (14-pin) package variant. The device is part of the broader 74HC logic family, designed to offer balanced CMOS performance with low power consumption. It serves as a non-inverting buffer for digital signal processing applications.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include other SN74HC126 variants with different packages, such as SN74HC126D (SOIC), SN74HC126DB (SSOP), or SN74HC126N (PDIP). Verify pin compatibility and thermal characteristics when switching between package types.

Buffers, Drivers, Receivers, Transceivers FAQ

How are unused channels handled?

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.