ISL23328WFVZ Equivalent & Substitute Parts

Part Overview

The ISL23328WFVZ is a digital potentiometer manufactured by Renesas Electronics Corporation, designed for data acquisition applications. It features a 10kΩ resistance network with 128 taps, dual-circuit configuration, and I2C interface control. The device operates across a supply voltage range of 1.2V to 5.5V and 1.7V to 5.5V, with selectable address functionality for multi-device applications.

The ISL23328WFVZ carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems utilizing this component.

Substiute Parts

ISL23328WFVZ

Renesas Electronics CorporationIn Stock: 3052ISL23328WFVZ Datasheet

Current PartRFQ

ISL23328WFRUZ-TK

Renesas Electronics CorporationIn Stock: 919ISL23328WFRUZ-TK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISL23328WFVZ is determined by strict equivalence across the following critical parameters:

• Resistance value: 10kΩ (exact match required)
• Number of circuits: 2 (exact match required)
• Number of taps: 128 (exact match required)
• Interface protocol: I2C (exact match required)
• Supply voltage range: 1.2V ~ 5.5V and 1.7V ~ 5.5V (exact match required)
• Operating temperature range: -40°C ~ 125°C (exact match required)
• Taper characteristic: Linear (exact match required)
• Memory type: Volatile (exact match required)
• Tolerance: ±20% (exact match required)
• Temperature coefficient: 125ppm/°C (exact match required)
• Wiper resistance: 70Ω typical (exact match required)
• Selectable address feature: Present (exact match required)
• Compliance certifications: ROHS3 Compliant, REACH Unaffected (exact match required)

The ISL23328WFRUZ-TK meets all substitution criteria. Differences in packaging format and product status do not affect functional or electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The ISL23328WFRUZ-TK is a direct functional equivalent to the ISL23328WFVZ. Both devices share identical electrical specifications, interface protocols, and compliance certifications (ROHS3 Compliant, REACH Unaffected).

The primary distinction is product status: the ISL23328WFVZ is Obsolete, while the ISL23328WFRUZ-TK maintains Active status. This status difference, combined with improved moisture sensitivity characteristics (MSL 1 versus MSL 3), positions the ISL23328WFRUZ-TK as the preferred selection for new designs and ongoing production support.

Packaging differences (14-TSSOP tube versus 16-UTQFN tape & reel) require PCB layout verification to ensure physical compatibility with existing board designs. Pin configuration and footprint differences necessitate design review prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the ISL23328WFRUZ-TK replace the ISL23328WFVZ in existing designs?

A: Electrical and functional replacement is possible. However, the ISL23328WFRUZ-TK uses a different package format (16-UTQFN versus 14-TSSOP), requiring PCB layout modification and pin mapping verification before implementation.

Q: What is the significance of the Obsolete product status for the ISL23328WFVZ?

A: Obsolete status indicates the manufacturer has discontinued production and support. The ISL23328WFRUZ-TK, with Active status, ensures continued availability and manufacturer support for future requirements.

Q: Are the I2C interface protocols identical between these parts?

A: Yes. Both devices implement I2C interface with selectable address functionality, ensuring software compatibility without modification.

Q: How do the moisture sensitivity levels differ?

A: The ISL23328WFVZ has MSL 3 (168-hour limit), while the ISL23328WFRUZ-TK has MSL 1 (unlimited). MSL 1 provides superior moisture resistance and extended shelf life without baking requirements.

Q: Are supply voltage specifications identical?

A: Yes. Both devices operate across 1.2V to 5.5V and 1.7V to 5.5V supply ranges with identical temperature coefficients and operating temperature limits.

Q: What packaging considerations apply to substitution?

A: The ISL23328WFVZ uses 14-TSSOP packaging in tube format, while the ISL23328WFRUZ-TK uses 16-UTQFN packaging in tape & reel format. Physical footprint differences require PCB redesign and component placement verification.