MAX349CPN

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX349CPN is an 8-channel serially controlled analog multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It operates within a single supply voltage range of +2.7V to +16V or dual supplies from ±2.7V to ±8V, supporting rail-to-rail analog signals. The device features a maximum on-resistance of 100Ω with a channel-to-channel match of 16Ω and flatness of 10Ω over the signal range. It utilizes a SPI/QSPI/MICROWIRE-compatible three-wire serial interface for control. The component is housed in an 18-pin Plastic DIP package and functions reliably across an operating temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Serially controlled architecture compatible with SPI, QSPI, and MICROWIRE standards
• Bidirectional signal paths capable of handling rail-to-rail analog voltages
• Asynchronous reset input ensures switches are off and registers are cleared upon activation

Analog Switches, Multiplexers, Demultiplexers Applications

• Serial data-acquisition systems
• Industrial and process-control systems
• Audio signal routing networks

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix CPN indicates the 18-pin Plastic DIP package variant when sourcing replacements. Confirm that the C suffix aligns with the required commercial temperature range of 0°C to +70°C for your application environment. Ensure compatibility with existing PCB footprints designed for standard 18-pin DIP configurations.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a low-voltage, serially controlled multiplexer is required for bidirectional signal routing. It is suitable for applications needing rail-to-rail signal handling without charge pumps. Consider the 18-pin DIP package constraint if through-hole mounting is necessary for the design.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX349/MAX350 family of serially controlled multiplexers. While the MAX350 offers dual 4-channel functionality, the MAX349 provides a single 8-channel configuration. Both share identical electrical characteristics and serial interface protocols, differing primarily in channel count and pinout assignments.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional equivalents include the MAX349CWN (18-SOIC) and MAX349CAP (20-SSOP). These variants maintain identical electrical specifications but require different footprint adaptations due to surface-mount packaging differences.