CAT5259YI-50-T2 Equivalent & Substitute Parts

Part Overview

The CAT5259YI-50-T2 is a digital potentiometer manufactured by onsemi, featuring 50kΩ resistance with 256 taps and I2C interface control. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a 2.5V to 6V supply range with linear taper configuration and non-volatile memory for persistent settings.

Substiute Parts

CAT5259YI-50-T2

onsemiIn Stock: 891CAT5259YI-50-T2 Datasheet

Current PartRFQ

X9259UV24IZ

Renesas Electronics CorporationIn Stock: 1463X9259UV24IZ Datasheet

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X9259UV24IZ-2.7

Renesas Electronics CorporationIn Stock: 1444X9259UV24IZ-2.7 Datasheet

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X9259UV24IZ-2.7T1

Renesas Electronics CorporationIn Stock: 761X9259UV24IZ-2.7T1 Datasheet

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X9259UV24IZT1

Renesas Electronics CorporationIn Stock: 984X9259UV24IZT1 Datasheet

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X9259UV24Z

Renesas Electronics CorporationIn Stock: 882X9259UV24Z Datasheet

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X9259UV24Z-2.7

Renesas Electronics CorporationIn Stock: 948X9259UV24Z-2.7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAT5259YI-50-T2 is determined by the following core parameters:

Critical Parameters (Must Match):

• Resistance value: 50kΩ
• Number of taps: 256
• Number of circuits: 4
• Interface: I2C
• Memory type: Non-Volatile
• Taper: Linear
• Package: 24-TSSOP
• Mounting type: Surface Mount
• Tolerance: ±20%
• Temperature coefficient: ±300ppm/°C

Variable Parameters (Allowed Differences):

• Supply voltage range (substitutes may have narrower or different ranges)
• Operating temperature range (substitutes may have narrower ranges)
• Wiper resistance (typical values may vary)
• Moisture sensitivity level
• Packaging format (Tube vs. Tape & Reel)
• Product status (Active substitutes acceptable for Obsolete main part)

All substitute parts listed are manufactured by Renesas Electronics Corporation under the XDCP™ series and meet the critical parameter requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active Renesas Electronics XDCP™ series components that maintain functional and electrical equivalence to the obsolete CAT5259YI-50-T2. Selection among substitutes depends on application-specific requirements:

For Extended Temperature Range Applications (-40°C to 85°C): Select X9259UV24IZ, X9259UV24IZ-2.7, X9259UV24IZ-2.7T1, or X9259UV24IZT1. These parts maintain the full temperature operating range of the original component.

For Standard Temperature Range Applications (0°C to 70°C): X9259UV24Z and X9259UV24Z-2.7 are suitable alternatives with narrower operating temperature specifications.

For Supply Voltage Compatibility:

• If your design operates at 5V only: X9259UV24IZ, X9259UV24IZT1, X9259UV24Z
• If your design requires 2.7V to 5.5V range: X9259UV24IZ-2.7, X9259UV24IZ-2.7T1, X9259UV24Z-2.7

For Packaging Requirements:

• Tube packaging: X9259UV24IZ, X9259UV24IZ-2.7, X9259UV24Z, X9259UV24Z-2.7
• Tape & Reel packaging: X9259UV24IZ-2.7T1, X9259UV24IZT1

All substitutes are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original component.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the CAT5259YI-50-T2?

A: All listed substitutes share identical core functionality: 50kΩ resistance, 256 taps, 4 circuits, I2C interface, and linear taper. Interchangeability depends on your specific application requirements for supply voltage range, operating temperature range, and packaging format. Verify these parameters against your design specifications before selection.

Q: What is the difference between the X9259UV24IZ and X9259UV24IZ-2.7 variants?

A: The primary difference is supply voltage range. X9259UV24IZ operates at 5V, while X9259UV24IZ-2.7 operates across 2.7V to 5.5V. Both maintain identical resistance, tap count, circuit count, and interface specifications. Select based on your power supply design.

Q: Why do some parts have different wiper resistance values?

A: Wiper resistance is a parasitic characteristic that varies slightly between manufacturing processes. The CAT5259YI-50-T2 specifies 200Ω typical, while substitutes specify 220Ω or 300Ω maximum. These variations remain within acceptable tolerances for most applications but should be evaluated if your circuit depends on precise wiper resistance characteristics.

Q: What does the "T1" suffix indicate in part numbers like X9259UV24IZ-2.7T1?

A: The T1 suffix indicates Tape & Reel packaging format, suitable for automated assembly processes. Parts without this suffix are supplied in Tube packaging. Both formats contain identical components; packaging selection depends on your manufacturing process requirements.

Q: Are the Renesas X9259 parts direct pin-for-pin replacements?

A: Yes. All substitute parts use the 24-TSSOP package with identical pinout and I2C interface protocol. No PCB layout modifications are required for substitution.

Q: Can I use X9259UV24Z in applications requiring -40°C operation?

A: No. X9259UV24Z operates only from 0°C to 70°C. For applications requiring -40°C to 85°C operation, select X9259UV24IZ, X9259UV24IZ-2.7, X9259UV24IZ-2.7T1, or X9259UV24IZT1.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original CAT5259YI-50-T2.