SN74HC126PW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC126PW 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 fanout support for up to 10 LSTTL loads while offering 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 the output enable pin
• 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 SOIC, SSOP, PDIP, SO, TSSOP, CDIP, and LCCC options. Confirm that the ordering suffix corresponds to the desired packaging format, such as tape and reel or tube, before finalizing procurement. Ensure compatibility with the intended operating temperature and voltage ranges specified in the datasheet.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a non-inverting buffer with controllable output states is required. It is suitable for applications needing to drive multiple loads or manage bus lines where high-impedance isolation is necessary. Consider the thermal characteristics 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 device belongs to the SNx4HC126 series of quadruple buffers with 3-state outputs. It is part of the broader 74HC logic family, designed to provide low power consumption and high noise immunity. The PW designation specifically indicates the TSSOP (14-pin) package variant, which offers a compact form factor suitable for surface-mount applications.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC126D

Buffers, Drivers, Receivers, Transceivers FAQ

How are unused inputs handled?

Unused inputs must not be left floating; they should be terminated at either VCC or ground to prevent undefined operational states.

What happens when the output is disabled?

When disabled, the output enters a high-impedance state, neither sourcing nor sinking current, allowing the output voltage to be determined by the external circuit.