SN74LVC125ABQAR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC125ABQAR is a quadruple bus buffer gate with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage of 1.65V to 3.6V and features independent output-enable inputs for each buffer. The device supports an operating temperature range of -40°C to 85°C and -40°C to 125°C. Inputs accept voltages up to 5.5V, enabling translation between 3.3V and 5V systems. Maximum propagation delay is 4.8ns at 3.3V. It is housed in a WQFN-14 package (BQA) measuring 3mm x 2.5mm.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features four independent line drivers with 3-state outputs controlled by separate OE inputs.
• Supports mixed 3.3V/5V system environments through input tolerance up to 5.5V.
• Designed for low power consumption with latch-up performance exceeding 250mA per JESD 17.

Buffers, Drivers, Receivers, Transceivers Applications

• Cable modem termination systems
• IP phones: wired and wireless
• Optical modules and optical networking
• Telecom base band units and PBX systems
• Wireless communications testers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the BQA suffix corresponds to the WQFN-14 package configuration. Confirm the specific temperature grade required (-40°C to 85°C or -40°C to 125°C) matches the application environment. Ensure ESD protection protocols are followed during handling as specified in the datasheet.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring voltage translation between 3.3V and 5V logic levels. It is suitable for applications needing high-speed buffering with independent channel control. Consider the WQFN package size constraints and thermal dissipation requirements for the target PCB layout.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC125A family of quadruple bus buffer gates. It utilizes CMOS technology to provide balanced output drive capabilities. The device is designed to prevent bus contention and ensure high-impedance states during power-up or power-down conditions when OE is tied to VCC.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC125ADBR (SSOP-14)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power-up and power-down states?

To ensure the high-impedance state during power up or power down, the OE input should be tied to VCC through a pullup resistor.

What is the maximum input voltage the device can tolerate?

Inputs accept voltages up to 5.5V, allowing compatibility with 5V devices even when the supply voltage is lower.