MAX4555CSE+T

Analog Switches - Special Purpose Overview

The MAX4555CSE+T 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 6Ω max for force paths and 60Ω max for sense-guard paths, with matching to 1Ω max. Off-leakage current is 0.25nA at +25°C. Switching times are 275ns maximum.

Analog Switches - Special Purpose Feature Summary

• Kelvin sensing architecture with separate high-current force and low-current sense signal paths
• Rail-to-Rail analog signal handling capability across the full supply range
• TTL and CMOS logic input compatibility with defined voltage thresholds
• Low power consumption with 1µA maximum supply current

Analog Switches - Special Purpose Applications

• Automated Test Equipment (ATE)
• Calibrators
• Precision Power Supplies
• Automatic Calibration Circuits
• Asymmetric Digital Subscriber Line (ADSL) with Loopback

Analog Switches - Special Purpose Procurement Notes

Verify the ordering suffix against official documentation to confirm package type and temperature range. The 'C' designation indicates commercial temperature operation, while 'E' denotes extended range. Confirm the 'T' suffix corresponds to tape-and-reel packaging if required for assembly processes. Ensure the component meets RoHS compliance standards specified in the manufacturer's datasheet before integration into production lines.

Analog Switches - Special Purpose Selection Notes

Select this component when precise voltage measurement under load is required using Kelvin sensing techniques. The MAX4555 provides distinct force and sense channels to eliminate lead resistance errors. Verify that the required on-resistance and leakage current specifications align with the application's precision needs. Ensure the supply voltage range matches the system's available power rails.

Analog Switches - Special Purpose Part Context

The MAX4555 is part of the MAX4554/MAX4555/MAX4556 family of force-sense switches. While the MAX4554 offers triple-pole configurations and the MAX4556 provides SPDT switches, the MAX4555 specifically features four independent SPST normally closed switches. This configuration supports dedicated force and sense paths within a standard 16-pin narrow SOIC package.

Analog Switches - Special Purpose Replacement Considerations

Direct functional substitutes within the same family include the MAX4554 and MAX4556, though their switching configurations differ. Cross-family replacements require verification of pinout compatibility and electrical parameter alignment. Always consult the latest manufacturer datasheets to confirm availability and updated specifications.