FST3125QSCX

Overview

The FST3125QSCX is a 4-bit bus switch manufactured by onsemi. It provides four high-speed CMOS TTL-compatible switches with separate output enable inputs. The device features low on-resistance to minimize propagation delay and ground bounce noise. It operates within an ambient temperature range of -40°C to +85°C. The component is packaged in SSOP-16 format.

Feature Summary

• Provides four independent one-bit switches for signal routing between ports
• Low on-resistance allows connection without adding significant propagation delay
• Control inputs are compatible with TTL logic levels
• Zero bounce operation in flow-through mode

Applications

• High-speed data bus switching applications
• Portable equipment requiring low power consumption
• Systems utilizing TTL-compatible logic interfaces

Procurement Notes

Verify the specific suffix QSCX against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures and voltage levels. Confirm RoHS compliance status through manufacturer documentation prior to integration into final designs.

Selection Notes

Select this component when four independent bidirectional switches are required with TTL compatibility. Consider the low on-resistance for maintaining signal integrity in high-speed buses. Verify that the SSOP-16 package fits the available PCB footprint constraints.

Part Context

This part belongs to the FST series of bus switches, designed for high-speed data transfer. It serves as a digital switch IC capable of connecting two ports while isolating them when disabled. The family emphasizes low power and minimal signal distortion.

Replacement Considerations

The FST3125DR2G and FST3125DTR2G are documented equivalents offering identical 4-bit bus switch functionality. These alternatives may provide different packaging options such as SOIC or TSSOP while maintaining electrical performance.