MAX389CWG+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX389CWG+ is a dual SP4T analog switch manufactured by Analog Devices Inc. under the Maxim Integrated brand. It features two independent multiplexer circuits, each configured as a 4-to-1 switch with a maximum on-resistance of 3 kΩ and channel-to-channel matching of 300 Ω. The device operates on dual supplies ranging from ±4.5 V to ±18 V. Key electrical parameters include a maximum turn-on time of 1.5 µs, turn-off time of 1 µs, charge injection of 55 pC, and off-state leakage current of 500 pA. It is housed in a 24-SOIC package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual independent SP4T switching architecture for signal routing
• High-voltage operation capability with dual supply support up to ±18 V
• Fault protection characteristics inherent to the MAX388/389 family design

Analog Switches, Multiplexers, Demultiplexers Applications

• Data acquisition systems requiring analog signal multiplexing
• Test and measurement equipment signal routing
• Industrial control systems involving high-voltage analog signals

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life (EOL) notifications, as this part has been marked as obsolete in some distributor records. Ensure the specific suffix matches required packaging and temperature specifications before ordering.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when dual 4:1 multiplexing with high-voltage tolerance is required. Compare against the MAX388 for single-channel applications or other MAX389 variants for different package options like PDIP. Verify that the 3 kΩ on-resistance meets system impedance requirements and that the ±4.5 V to ±18 V supply range aligns with available power rails.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX389CWG+ belongs to the MAX388/MAX389 family of high-voltage, fault-protected analog multiplexers. It serves as the dual-channel counterpart to the single-channel MAX388. Both devices share similar electrical characteristics but differ in channel count and pin configuration, with the MAX389 offering two SP4T switches in a 24-pin SOIC package.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes include the MAX388CWG+ for single-channel needs or other MAX389 variants such as MAX389CPN for DIP packaging. Verify pin compatibility and electrical specifications before substitution.