CAT5241YI-25-T2

Digital Potentiometers Overview

The CAT5241YI-25-T2 is a quad digital potentiometer from onsemi featuring four independent linear-taper resistors with 64 taps each. It integrates 16 bytes of non-volatile memory to store up to four wiper settings per potentiometer, enabling automatic recall at power-up. The device operates on a 2.5 V to 6.0 V supply and communicates via an I2C serial interface. Key electrical parameters include a typical wiper resistance of 80 Ω at 5 V, a standby current of less than 1 µA, and an industrial temperature range of -40°C to +85°C. It is housed in a 20-lead TSSOP package.

Digital Potentiometers Feature Summary

• Four independent 64-tap linear digital potentiometers with 2.5 kΩ end-to-end resistance
• Non-volatile memory stores four wiper positions per pot for automatic power-up recall
• I2C serial interface supports up to sixteen devices on a single bus
• Low standby current (<1 µA) and 1,000,000 write cycle endurance

Digital Potentiometers Applications

• Circuit level or system level adjustments requiring programmable resistance
• Automated product calibration on high-volume production lines
• Remote control adjustment of equipment in hazardous or inaccessible environments
• Offset, gain, and zero adjustments in self-calibrating systems

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T2' corresponds to the TSSOP-20 package and tape-and-reel shipping format as defined in the ordering information. Confirm that the 'I' indicates the industrial temperature range (-40°C to +85°C). Ensure the '25' designation matches the required 2.5 kΩ resistance value for the application design.

Digital Potentiometers Selection Notes

Select this component when four isolated digital potentiometers are needed with persistent setting storage. The 2.5 kΩ resistance value suits applications requiring lower impedance compared to the 10 kΩ, 50 kΩ, or 100 kΩ variants. The I2C interface requires appropriate pull-up resistors on SDA and SCL lines. Consider the 80 Ω typical wiper resistance for voltage drop calculations in signal paths.

Digital Potentiometers Part Context

This part belongs to the CAT5241 family of quad digital potentiometers. Other variants in the series include different resistance values (10 kΩ, 50 kΩ, 100 kΩ) and package options such as SOIC-20 (suffix W). The Y suffix specifically denotes the TSSOP-20 package, while the W suffix denotes the SOIC-20 package. All variants share the same functional architecture and I2C control logic.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include CAT5241WI-25-T1 (SOIC-20 package) and other resistance variants like CAT5241YI-10-T2 or CAT5241YI-50-T2 if resistance values differ. Cross-family substitutes require verification of interface compatibility and memory features.