74FST3126QS

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74FST3126QS is a high-speed, low-voltage digital bus switch IC designed for data bus applications. It features four independent bidirectional switches with active pull-down devices to ensure defined logic states when the device is powered down or in a high-impedance state. The component operates within a supply voltage range of 4.0 V to 5.5 V and supports signal transitions at speeds up to 10 ns. It is housed in a QSOP-16 surface-mount package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Four independent bidirectional bus switches
• Active pull-down devices for defined logic states during power-down
• High-speed operation with 10 ns transition times
• Low standby current consumption

Buffers, Drivers, Receivers, Transceivers Applications

• Data bus switching in portable equipment
• Memory module bus switching
• High-speed data transmission lines
• Bus-oriented topologies requiring low on-resistance

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'QS' against the manufacturer's official datasheet to confirm package type and compliance status. Ensure the ordering part number matches the exact pin configuration and RoHS requirements required by your design specifications before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low on-resistance and fast switching speeds in 5V logic systems. Consider the QSOP-16 package constraints for PCB layout. Verify that the operating voltage range aligns with the system's power supply rails and that the input logic levels are compatible with the driving source.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74FST3126QS belongs to the FST (Fast Switching Technology) family from onsemi, which provides high-performance bus switching solutions. This series is characterized by low on-resistance and fast propagation delays, making it suitable for high-speed data buses where signal integrity and speed are critical parameters.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct replacements such as the 74FST3126D or other FST3126 variants from onsemi. Verify pin compatibility and electrical characteristics before substituting. Other manufacturers may offer equivalent parts, but functional equivalence must be confirmed via datasheet comparison.