MAX4508CSE+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4508CSE+ is a fault-protected, high-voltage single 8-to-1 multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It operates with dual supplies of ±4.5V to ±20V or a single supply of +9V to +36V. The device features ±40V overvoltage protection with power off and ±25V protection with supplies on. Key electrical parameters include a maximum on-resistance (RON) of 400 Ω, an on-resistance match between channels (ΔRON) of 15 Ω max, and a fault output clamp turn-on delay of 20 ns. The enable turn-on time is typically 170 ns, while the enable turn-off time is 250 ns. The component supports rail-to-rail signal handling and TTL/CMOS-compatible logic inputs.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Provides ±40V fault protection when power is off and ±25V protection when supplies are active.
• Enables rail-to-rail signal handling without requiring specific power-supply sequencing.
• Features internal clamping that limits the COM_ output voltage to the appropriate supply rail during fault conditions.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data-Acquisition Systems
• Industrial and Process Control
• Avionics
• Signal Routing
• Redundant/Backup Systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the ordering suffix CSE+ corresponds to the commercial temperature range (0°C to +70°C) and the 16-pin Narrow SOIC package. Confirm RoHS compliance status as indicated by the plus sign in the part number. Ensure the source document matches the official Maxim Integrated datasheet for the MAX4508/MAX4509 series to validate pinout and electrical specifications before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring high-voltage fault protection on analog inputs. The MAX4508 offers a single 8-to-1 configuration, whereas the MAX4509 provides a dual 4-to-1 arrangement. Consider the 400 Ω maximum on-resistance and 15 Ω channel matching for precision requirements. Verify that the required supply voltage range fits within the specified ±4.5V to ±20V dual or +9V to +36V single supply limits.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4508CSE+ belongs to the MAX4508/MAX4509 family of fault-protected multiplexers. These devices are pin-compatible with industry-standard DG508/DG509 parts. The 'C' suffix denotes the commercial temperature range, while 'E' indicates extended range. The 'S' refers to the SOIC package, and '+' signifies lead-free construction. This family is designed for robust signal switching in harsh environments.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG508