SN74HCS125BQAR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCS125BQAR is an automotive-grade quadruple buffer and line driver from Texas Instruments, belonging to the HCS logic series. It features four non-inverting channels with Schmitt-trigger inputs and three-state outputs. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a high-level output current of -7.8 mA and a low-level output current of 7.8 mA. Static current is specified at 100 nA, with a typical operating supply current of 2 uA. The propagation delay is 39 ns. It supports an extended industrial temperature range from -40°C to +125°C and is housed in a WQFN-14 package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle electronics.
• Schmitt-trigger inputs provide noise filtering and hysteresis for signal integrity.
• Three-state outputs allow direct connection to bus structures without external drivers.
• Low static power consumption suitable for energy-efficient designs.

Buffers, Drivers, Receivers, Transceivers Applications

• Automotive electronic control units (ECUs) requiring robust signal buffering.
• Bus-oriented systems utilizing shared data lines.
• High-noise environments where input hysteresis prevents false triggering.
• General-purpose digital signal conditioning in industrial applications.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'BQA' corresponds to the WQFN-14 package and tape-and-reel configuration on official manufacturer documentation. Confirm AEC-Q100 certification status and RoHS compliance details directly from the datasheet before procurement. Ensure the ordering part number matches the required temperature grade and packaging format for your production line.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when automotive reliability and Schmitt-trigger noise immunity are required alongside low power consumption. Compare against standard HC or HCT families if higher drive strength or different voltage thresholds are needed. Verify that the WQFN-14 footprint fits the PCB layout constraints and thermal requirements of the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the SN74HCS125 family, designed specifically for automotive and industrial markets. It complements other buffers in the 74-series lineup by offering enhanced noise tolerance through Schmitt triggers while maintaining low power characteristics. The Q1 suffix indicates its qualification for automotive use, distinguishing it from commercial variants.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for SN74HCS125PWRQ1 or SN74HCS125QPWRQ1 for alternative pin-compatible packages such as TSSOP or PW. Ensure any substitute maintains the same HCS logic family characteristics and automotive qualification level.