DG412FDY+T

Overview

The DG412FDY+T is a quad, single-pole/single-throw (SPST) analog switch manufactured by Analog Devices Inc. under the Maxim Integrated brand. It features fault protection and rail-to-rail signal handling capabilities within an SOIC-16 surface-mount package. The device operates on single or dual power supplies, with a minimum voltage of 9V for single supply and ±4.5V to ±20V for dual supply configurations. Maximum operating temperatures reach +85°C, while minimums extend to -40°C. Key electrical parameters include a maximum on-resistance of 85 Ohms, a maximum power dissipation of 696 mW, and a maximum supply current of 600 uA. Switching times are specified at a maximum of 250 ns for turn-on and 125 ns for turn-off.

Feature Summary

• Integrated fault protection circuitry safeguards against overvoltage conditions
• Rail-to-rail signal capability allows full voltage range utilization
• Quad SPST configuration provides four independent switching channels

Applications

• Signal routing in data acquisition systems
• Multiplexing sensor inputs in industrial control
• Test and measurement equipment signal paths

Procurement Notes

Verify the specific suffix designation when ordering, as it indicates packaging format rather than functional change. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected package variant matches the intended PCB footprint requirements for reliable surface-mount assembly.

Selection Notes

Select this component when fault protection and rail-to-rail operation are required alongside standard SPST switching functions. Compare on-resistance specifications against system loss tolerances, noting the 85 Ohm maximum limit. Evaluate thermal management needs based on the 696 mW power dissipation rating and expected load currents during continuous operation.

Part Context

This part belongs to the DG412F series, which distinguishes itself from the standard DG412 family through enhanced fault protection features. While sharing the quad SPST architecture, the FDY variant incorporates additional circuitry to handle harsh electrical environments. It serves as a specialized solution for applications requiring robust signal integrity under potential fault conditions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing pinout configurations and electrical limits against alternative devices from the same manufacturer family.