DG211BDY

Analog Switches, Multiplexers, Demultiplexers Overview

The DG211BDY is a quad single-pole single-throw (SPST) analog switch manufactured by Vishay Siliconix in a 16-pin Narrow SOIC package. It operates on dual supplies ranging from ±4.5 V to ±22 V or a single supply from +4.5 V to +25 V. The device features a maximum on-resistance of 85 Ω at room temperature and up to 100 Ω across the full operating temperature range of -40 °C to +85 °C. Switching times are specified with a maximum turn-on time of 300 ns and a turn-off time of 200 ns. The component supports a continuous current rating of 30 mA and includes an epitaxial layer to prevent latchup.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Normally closed configuration for SPST switching applications
• TTL and CMOS compatible logic interface
• Epitaxial layer design prevents latchup
• True bi-directional signal performance

Analog Switches, Multiplexers, Demultiplexers Applications

• Industrial instrumentation
• Test equipment
• Sample-and-hold circuits
• Communications systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type, lead finish, and reel specifications. Confirm RoHS compliance status as standard parts may vary based on manufacturing date codes and regional regulations. Ensure the selected variant matches the required thermal dissipation characteristics for the intended PCB layout.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a normally closed analog switch topology is required for signal routing. Verify that the application voltage does not exceed the absolute maximum ratings of 44 V between supply pins. Consider the power dissipation limits of the 16-pin Narrow SOIC package and apply appropriate derating factors if operating above 75 °C ambient temperature.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the DG211B/DG212B series, which are improved versions of the industry-standard DG211 and DG212 devices. The B-series offers lower on-resistance, reduced leakage, faster switching speeds, and lower power consumption compared to the original generation. The DG211B specifically denotes the normally closed variant within this family.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG211BDJ-E3

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the default state of the DG211BDY switches?

The DG211BDY consists of four normally closed (NC) switches. A logic low input turns the switch on, while a logic high input turns it off.

Does the DG211BDY support single-supply operation?

Yes, the device supports single-supply operation with a voltage range from +4.5 V to +25 V, in addition to dual-supply operation.

How does the DG211BDY prevent latchup?

The device incorporates an epitaxial layer in its CMOS fabrication process to prevent latchup under various operating conditions.