MAX355EWE+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX355EWE+T is a dual 4-channel fault-protected analog multiplexer manufactured by Analog Devices/Maxim Integrated. It operates from a single 4.5V to 36V supply or ±4.5V to ±18V dual supplies. The device features a maximum on-resistance of 350Ω and input leakage current less than 0.5nA at +25°C. Digital inputs utilize 0.8V and 2.4V logic thresholds for TTL and CMOS compatibility. Break-before-make operation is guaranteed, with power consumption under 1.5mW. The component is housed in a 16-pin Wide SOIC package and supports an operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Series N-channel, P-channel, N-channel structure provides overvoltage protection up to 40V beyond supply rails during power-up, power-down, and fault conditions.
• All switches turn off when power supplies are removed, ensuring no unintended signal paths exist during power loss.
• Guaranteed break-before-make switching prevents simultaneous connection between input channels and the common output.
• Output clamps at approximately 1.5V below supply rails to protect sensitive downstream circuit components.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data-Acquisition Systems
• Industrial and Process Control
• Avionics
• ATE Equipment
• Signal Routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'E' confirms the extended industrial temperature range (-40°C to +85°C) rather than commercial grade. Confirm the '+T' designation indicates reel packaging if required for automated assembly. Cross-reference the manufacturer part number against official Analog Devices documentation to ensure authenticity and correct revision level before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when high-voltage fault protection is required for analog signals exceeding standard supply limits. Ensure the 350Ω on-resistance meets system accuracy requirements. Verify that the 16-pin Wide SOIC footprint fits the PCB layout constraints. Consider the dual 4-channel configuration versus the single 8-channel MAX354 based on channel count needs.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX355EWE+T belongs to the MAX354/MAX355 family of fault-protected multiplexers. It serves as a pin-compatible alternative to older Maxim parts like the MAX358/MAX359 and DG458/DG459. It also offers pin compatibility with ADI's ADG508F/ADG509F series, facilitating design upgrades within mixed-signal systems requiring robust analog switching capabilities.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX355CWE+T (Commercial Temperature Range)

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX355 handle overvoltage conditions when power is off?

The device uses a series FET protection scheme that turns off internal MOSFETs to block input signals up to ±40V, limiting current to sub-microamp levels even when V+ and V- are absent.

What is the typical break-before-make interval?

The MAX355 guarantees a break-before-make interval of 100ns, which prevents short circuits between input channels during switching transitions.

Can the MAX355 operate with a single supply voltage?

Yes, it can operate with a single supply ranging from +4.5V to +30V by connecting the V- pin to ground (0V).