MAX4555CSE+

Analog Switches - Special Purpose Overview

The MAX4555CSE+ is a CMOS analog switch IC configured as a force-sense switch for Kelvin sensing in automated test equipment. It contains four independent single-pole/single-throw (SPST) normally closed switches, two low-resistance force switches, and two higher-resistance sense switches. The device operates from a single supply of +9V to +40V or dual supplies of ±4.5V to ±20V. On-resistance is matched between switches to 1Ω max, with a maximum on-resistance of 30Ω for the sense switches. Each switch handles Rail-to-Rail analog signals, features off-leakage current of 0.25nA at +25°C, and includes TTL/CMOS-compatible inputs.

Analog Switches - Special Purpose Feature Summary

• Kelvin sensing architecture with separate high-current force paths and precision sense paths
• Rail-to-Rail signal handling capability across the full supply range
• TTL and CMOS logic input compatibility with defined voltage thresholds
• Low power consumption with minimal supply current draw

Analog Switches - Special Purpose Applications

• Automated Test Equipment (ATE)
• Precision Power Supplies
• Automatic Calibration Circuits
• Calibrators

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'CSE+' against the manufacturer's official datasheet to confirm the commercial temperature range and lead-free packaging status. Ensure the narrow SOIC-16 package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Analog Switches - Special Purpose Selection Notes

Select this component when Kelvin sensing is required to eliminate conductor resistance errors in high-current applications. The MAX4555 provides four SPST normally closed switches, distinguishing it from the MAX4554 and MAX4556 which offer different switching configurations. Verify that the 30Ω maximum on-resistance of the sense switches meets the sensitivity requirements of the measurement circuit.

Analog Switches - Special Purpose Part Context

The MAX4555 is part of the MAX4554/MAX4555/MAX4556 family of force-sense switches designed by Maxim Integrated. These devices share similar electrical characteristics and pinouts but differ in internal switch topology. The MAX4555 specifically offers four independent SPST normally closed switches, whereas the MAX4554 uses triple-pole switches and the MAX4556 uses single-pole double-throw switches.

Analog Switches - Special Purpose Replacement Considerations

The MAX4555ESE-T is a tape-and-reel variant of the same functional device. Other family members like the MAX4554 and MAX4556 share the same package and general specifications but have different internal switch configurations.