SN74AHCT125BQAR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AHCT125BQAR is a commercial-grade quadruple bus buffer gate with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to 85°C. The device features independent output enable controls for each channel, providing high-level output current of -8 mA and low-level output current of 8 mA. Propagation delays are specified at 6.5 ns maximum (CL = 15 pF) and 8.5 ns maximum (CL = 50 pF). It utilizes a WQFN-14 package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• TTL-voltage compatible inputs ensure seamless integration with standard logic families.
• Independent output-enable pins allow individual control of each buffer channel.
• High latch-up performance exceeding 250 mA per JESD 17 standards.

Buffers, Drivers, Receivers, Transceivers Applications

• Enable or disable digital signals
• Controlling indicator LEDs
• Switch debounce circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific BQA suffix corresponds to the WQFN-14 package configuration required for your PCB layout. Confirm that the commercial grade rating (-40°C to 85°C) aligns with your environmental specifications. Ensure input pins are terminated to VCC or GND if unused to prevent undefined operational states.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when TTL-compatible buffering with independent channel control is required in a compact surface-mount form factor. The AHCT technology provides CMOS speed with TTL input compatibility. Consider thermal impedance characteristics during design if multiple channels are actively driven simultaneously.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4AHCT125 family of quadruple bus buffer gates. The 'BQA' suffix specifically denotes the WQFN (Wide Quad Flat No-leads) 14-pin package variant. Other variants in the series include SOIC, SSOP, and PDIP packages, offering flexibility for different manufacturing and assembly requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AHCT125DR (SOIC-14)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the output behave when the output-enable pin is high?

When the output-enable (OE) input is high, the respective gate output enters a high-impedance state, effectively disconnecting it from the circuit.

What is the recommended handling for unused inputs?

All unused inputs must be held at VCC or GND to ensure proper device operation and prevent oscillations or excessive power consumption.