MAX389CWG

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX389CWG is a dual SP4T analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features two independent multiplexer circuits with a 4:1 configuration, housed in a 24-SOIC surface-mount package. The device operates on dual supplies ranging from ±4.5V to ±18V. Key electrical parameters include a maximum on-resistance of 3 kΩ and a channel-to-channel matching of 300 Ω. Switching times are specified at 1.5 µs for turn-on and 1 µs for turn-off. Additional characteristics include 55 pC charge injection, 5pF/25pF off-channel capacitance, and 500 pA maximum leakage current. The component supports an operating temperature range of 0°C to 70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual independent SP4T switching architecture providing four selectable channels per circuit
• High isolation performance with low off-state leakage and minimal charge injection
• Robust mechanical design utilizing a standard 24-lead SOIC surface-mount footprint

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in test and measurement instrumentation
• Multiplexing sensor arrays in industrial control systems
• Data acquisition front-end signal selection

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'CWG' against the manufacturer's official part numbering system to confirm package type and environmental compliance. Confirm RoHS status and REACH registration details directly from the datasheet. Check for End-of-Life (EOL) notifications or Product Change Notices (PCN) as availability may be restricted. Ensure the supplier provides valid traceability documentation for the Analog Devices/Maxim Integrated origin.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when dual high-impedance signal paths are required within a compact surface-mount form factor. The 3 kΩ on-resistance suits applications where precise voltage transfer is less critical than channel count and isolation. Verify that the ±4.5V to ±18V supply range aligns with the system power rails. Consider the 0°C to 70°C commercial temperature limit for indoor environments.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX389 belongs to the MAX388/MAX389 family of analog switches designed for general-purpose signal switching. These devices offer a balance of speed and isolation for multiplexing tasks. The CWG variant specifically denotes the 24-SOIC package option. This series is commonly used in scenarios requiring multiple independent signal paths without complex digital control overhead.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Consult the official datasheet for direct pin-compatible substitutes within the MAX388/MAX389 family. Verify that any alternative maintains the same SP4T topology and 24-SOIC footprint. Cross-reference electrical limits such as on-resistance and supply voltage ranges to ensure functional equivalence.