MAX4535CSD

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4535CSD is a dual 2-to-1 fault-protected multiplexer housed in a 14-pin Narrow SO package. It operates with ±4.5V to ±20V dual supplies or +9V to +36V single supply, covering an operating temperature range of 0°C to +70°C. The device features a maximum on-resistance of 400Ω and channel-to-channel matching of 10Ω max. It provides ±40V overvoltage protection when power is off and ±25V protection when supplies are active. Key electrical parameters include a typical enable turn-on time of 275ns, break-before-make delay of 60ns, and input logic thresholds compatible with TTL and CMOS standards.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault-protected analog inputs handle signals exceeding supply rails without damage
• Rail-to-rail signal handling capability allows full voltage swing operation
• TTL and CMOS-compatible logic inputs ensure broad digital interface compatibility
• No power-supply sequencing required for safe operation

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 specific ordering suffix CSD corresponds to the 14-pin Narrow SO package and the commercial temperature range (0°C to +70°C). Confirm that the component meets all absolute maximum ratings regarding continuous current into any terminal and peak pulsed current limits during installation and testing procedures.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this part for applications requiring high-voltage fault protection on analog inputs. Ensure the supply voltage does not exceed the 44V differential limit between V+ and V-. Verify that the load impedance at the COM pin does not cause the output clamp current to exceed the 30mA absolute maximum rating during fault conditions.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4535CSD belongs to the MAX4534/MAX4535 family of fault-protected multiplexers manufactured by Analog Devices Inc./Maxim Integrated. This series distinguishes itself from traditional switches by utilizing parallel FETs for low on-resistance and providing robust overvoltage clamping capabilities while maintaining rail-to-rail signal integrity across wide supply ranges.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX4535ESD (Extended temperature, Narrow SO)

Analog Switches, Multiplexers, Demultiplexers FAQ

Are the COM pins fault protected?

No, the COM pins are not fault protected. Exceeding the supply voltages on COM pins can cause high currents through internal ESD diodes, potentially damaging the device.

What is the recovery time after a fault condition?

The typical recovery time is 2.5µs for positive faults and 1.3µs for negative faults. These values depend on the COM output resistance and capacitance.

How does the device handle signals beyond the supply rails?

When a signal on NO exceeds the supply rails, the NO pin becomes high impedance. If the switch is on, booster FETs clamp the COM output to the appropriate supply rail.