MAX355CWE

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX355CWE is a dual 4-channel fault-protected analog multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It operates from single supplies of +4.5V to +30V or dual supplies of ±4.5V to ±18V. The device features a maximum on-resistance of 350Ω and input leakage current of less than 0.5nA at +25°C. It provides overvoltage protection up to ±40V beyond the supply rails during power-up, power-down, and fault conditions. The component is housed in a 16-Wide SOIC package and supports an operating temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrated series N-channel, P-channel, N-channel structure for continuous overvoltage protection up to ±40V
• Guaranteed break-before-make switching action to prevent channel-to-channel shorts
• TTL and CMOS logic compatibility without requiring external pull-up resistors
• All switches turn off automatically when power supplies are removed

Analog Switches, Multiplexers, Demultiplexers Applications

• Data-acquisition systems
• Industrial and process control
• Avionics
• Automated test equipment (ATE)
• Signal routing and redundant/backup systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify that the specific part number matches the required temperature grade and package style. Confirm RoHS compliance status with the supplier. Ensure the ordering suffix corresponds to the intended operational temperature range and physical footprint before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring high-voltage fault protection on analog signals. Verify that the system voltage requirements fall within the specified single or dual supply ranges. Consider the 350Ω on-resistance limit when calculating signal attenuation. Ensure the digital interface logic levels align with the device's TTL/CMOS thresholds.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the MAX354/MAX355 family of fault-protected analog multiplexers. The MAX355 variant specifically provides two independent 4-channel multiplexers in a single package. It serves as an improved second source for older models like the MAX358 and DG459, offering pin-compatible functionality with enhanced protection features.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Public confirmed substitutes include the MAX358, MAX359, DG458, and DG459. These components offer similar fault-protection capabilities and pin configurations. Verify electrical characteristics such as on-resistance and leakage currents against the original design requirements before substitution.