SN74HCS125QBQARQ1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCS125QBQARQ1 is an automotive-grade quadruple buffer with 3-state outputs and Schmitt-trigger inputs. It operates within a supply voltage range of 2V to 6V and supports ambient temperatures from -40°C to +125°C. The device features balanced CMOS push-pull outputs capable of ±7.8mA drive current at 6V. Typical supply current is 100nA, with input leakage current of ±100nA. Propagation delay ranges from 5ns to 39ns depending on voltage. It is housed in a 14-pin WQFN package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Schmitt-trigger inputs provide high noise rejection and tolerance for slow or noisy signals
• Balanced CMOS push-pull outputs deliver symmetric sourcing and sinking capabilities
• Automotive qualification ensures reliability across extended temperature ranges

Buffers, Drivers, Receivers, Transceivers Applications

• Enable or disable digital signals via control logic
• Controlling indicator LEDs with sufficient drive current
• Switch debounce circuits utilizing input hysteresis
• Signal conditioning to eliminate noise on data lines

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type and reel configuration. Confirm RoHS compliance and lead finish specifications against project requirements. Ensure the component meets AEC-Q100 standards if automotive validation is mandatory. Cross-reference the manufacturer part number with official datasheets to confirm active production status and availability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when system design requires robust noise immunity for slow-rising signals. The wide voltage range accommodates various power domains without level shifting. Consider the 3-state output capability for bus sharing applications. Verify thermal performance under maximum load conditions given the low junction-to-ambient resistance of the WQFN package.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74HCS125-Q1 family of automotive buffers. It shares functional characteristics with other members of the HCS series but differs in packaging options such as SOIC or TSSOP. The Q1 suffix denotes automotive qualification, distinguishing it from standard commercial variants like the SN74HCS125.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HCS125DYYRQ1 (SOT-23-THIN package)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the Schmitt-trigger architecture affect signal integrity?

It provides hysteresis that prevents multiple transitions caused by noise or slow signal edges, ensuring clean logic switching.

What is the recommended handling for unused inputs?

Unused inputs must be tied to VCC or ground to prevent floating states; they should not be left unconnected.