SN74HC126PWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC126PWR 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 of -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 (OE) pin
• Balanced CMOS 3-state 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, as these do not alter the internal function but affect handling and assembly processes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a non-inverting buffer with controllable output states is required. Ensure the application voltage falls between 2 V and 6 V. Consider the thermal resistance metrics provided in the datasheet if high current loads are anticipated. Unused inputs must be terminated to VCC or ground to prevent undefined operational states.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC126 series of quadruple bus buffer gates. It is designed for general-purpose digital logic applications requiring signal buffering and bus control. The device is compatible with standard CMOS logic families and offers improved performance over older LSTTL technologies regarding power consumption.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC126D

Buffers, Drivers, Receivers, Transceivers FAQ

How should unused inputs be handled?

Unused inputs must be terminated to either VCC or ground. They can be directly terminated if completely unused or connected with a pull-up/pull-down resistor if used intermittently.

What happens when the output is disabled?

When disabled, the output enters a high-impedance state where it neither sources nor sinks current. The output voltage is then determined by the external circuit connected to the pin.