DG509ADY

Analog Switches, Multiplexers, Demultiplexers Overview

The DG509ADY is a monolithic CMOS analog multiplexer featuring two differential 4-channel (2-of-8) switching circuits. It operates from dual power supplies ranging from ±4.5V to ±18V and guarantees break-before-make switching to prevent signal glitches. The device ensures latchup-proof construction even when power supplies are removed while input signals remain active. Designed for low-power applications, it offers significantly lower leakage currents and faster enable switching times compared to legacy versions. The component is housed in a 16-pin Narrow SO package and supports an operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Monolithic CMOS design with two independent differential 4-channel multiplexing circuits
• Guaranteed break-before-make switching action prevents output shorting during channel transitions
• Latchup-proof construction allows continuous operation even if power supplies are turned off with signals present
• Low-power architecture with reduced leakage currents suitable for portable equipment

Analog Switches, Multiplexers, Demultiplexers Applications

• Data-acquisition systems requiring signal routing
• Control systems and data logging applications
• Aircraft heads-up displays
• General-purpose signal routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm RoHS compliance status as indicated by the part number designation. Ensure the supply voltage requirements align with the specified ±4.5V to ±18V operational range before integration into the design.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for designs requiring differential signal multiplexing with high isolation. Verify that the logic inputs are compatible with the required TTL or CMOS levels. Consider the thermal derating characteristics for the Narrow SO package if operating near the upper temperature limit. Ensure the analog signal range stays within the specified ±15V limits for optimal performance.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG509ADY belongs to the Maxim Integrated DG508A/DG509A family of monolithic CMOS analog multiplexers. This series serves as a plug-in upgrade for industry-standard predecessors, offering improved electrical characteristics such as faster switching speeds and lower power consumption. The DG509 variant specifically provides differential switching capabilities, distinguishing it from the single-ended DG508 configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements include other variants within the DG509A family, such as DG509ACJ, DG509ABK, or DG509AEWE, depending on the required temperature range and package style. Cross-reference pinouts and electrical specifications to ensure compatibility with existing circuit layouts.