74FST3253QS

Overview

The onsemi 74FST3253QS is a high-speed dual 4-bit multiplexer/demultiplexer designed for demanding digital applications. It operates with a supply voltage range of 2.7V to 3.6V, ensuring compatibility with standard logic families while delivering low propagation delay characteristics typical of the FST series. The device features three-state outputs and active pull-up resistors to maintain signal integrity during high-impedance states. Packaged in a QS16 surface-mount format, it supports efficient board space utilization. Key electrical specifications include controlled switching speeds and robust output drive capabilities suitable for data routing tasks in communication systems.

Feature Summary

• Dual independent 4-bit multiplexing or demultiplexing functionality
• Three-state outputs with active pull-up resistors
• High-speed operation compatible with 3.3V logic systems

Applications

• Data routing in telecommunications equipment
• Signal selection in computer peripheral interfaces
• Multiplexing in industrial control systems

Procurement Notes

Verify the specific suffix 'QS' indicates the correct package type and tape-and-reel configuration required for your assembly process. Confirm that the operating temperature range meets your environmental specifications. Ensure compatibility with your existing PCB footprint design before finalizing procurement orders.

Selection Notes

Choose this component when dual-channel 4-bit switching is required within a 3.3V power domain. Consider its speed and power consumption relative to alternative logic families if system latency is critical. Verify input voltage levels match your control signals to ensure proper logic threshold compliance.

Part Context

This part belongs to the 74FST family, known for fast switching times and low power dissipation. It serves as a specialized solution for high-density data path management. The QS package offers a compact form factor suitable for modern surface-mount technology requirements in consumer and industrial electronics.

Replacement Considerations

Check for direct pin-compatible alternatives from other manufacturers offering similar FST specifications. Verify that any substitute maintains the same voltage range and package dimensions to avoid redesign efforts.