PCA9541D/03,112 Equivalent & Substitute Parts

Part Overview

The PCA9541D/03,112 is a 2-Channel I2C Multiplexer Interface manufactured by NXP USA Inc., designed for I2C and SMBus applications requiring channel selection and signal routing. This component operates across a supply voltage range of 2.3V to 5.5V and is packaged in a 16-SOIC form factor suitable for surface mount assembly.

The product status is listed as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing system design, maintenance, and production continuity. Substitute components must maintain compatibility with I2C/SMBus interface protocols and support the specified voltage supply range to ensure drop-in or near-equivalent functionality.

Substiute Parts

PCA9541D/03,112

NXP USA Inc.In Stock: 1144PCA9541D/03,112 Datasheet

Current PartRFQ

CA91L862A-50IEV

Renesas Electronics CorporationIn Stock: 2188CA91L862A-50IEV Datasheet

MFR RecommendedRFQ

MAX14502AETL+

Analog Devices Inc./Maxim IntegratedIn Stock: 21264MAX14502AETL+ Datasheet

MFR RecommendedRFQ

MAX3798ETJ+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2128MAX3798ETJ+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the PCA9541D/03,112 is constrained by the following critical parameters:

• Interface Protocol: I2C and SMBus compatibility
• Supply Voltage Range: 2.3V to 5.5V operational window
• Package Type: Surface mount configuration
• Functional Category: Interface/Multiplexer specialization
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The three substitute parts listed (CA91L862A-50IEV, MAX14502AETL+, MAX3798ETJ+T) are identified as manufacturer-recommended alternatives. However, critical parameter divergences exist:

• CA91L862A-50IEV: Data Acquisition Interface with 256-PBGA package and 3.3V supply only—fundamentally different package and voltage specification
• MAX14502AETL+: USB Interface with 40-TQFN package and 1.8V–3.3V supply range—different interface protocol and package
• MAX3798ETJ+T: Limiting Amplifier with 32-TQFN package and 2.85V–3.63V supply span—different functional category and package

These parts do not meet strict electrical and mechanical substitution criteria for direct replacement of the PCA9541D/03,112 in I2C multiplexer applications.

Parameter Comparison

Engineering Selection Recommendations

Based on provided specifications and compliance certifications:

Product Status Consideration: The PCA9541D/03,112 is obsolete. All three substitute parts carry Active product status, indicating current manufacturing availability and ongoing vendor support.

Compliance Alignment: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original component.

Critical Incompatibilities: Direct substitution is not supported by the provided parameters. The substitute parts exhibit fundamental divergences in package form factor, supply voltage specifications, and functional classification that prevent equivalent replacement in I2C multiplexer applications without circuit redesign.

For applications requiring I2C multiplexing functionality with the original voltage and package specifications, alternative sources for the PCA9541D/03,112 or functionally equivalent I2C multiplexer devices from active product lines should be evaluated through component distribution channels.

Frequently Asked Questions (FAQ)

Q: Can the CA91L862A-50IEV replace the PCA9541D/03,112 in an existing design?

A: No. The CA91L862A-50IEV operates at 3.3V supply only, compared to the PCA9541D/03,112 range of 2.3V–5.5V. Additionally, the 256-PBGA package is incompatible with the 16-SOIC footprint. The functional category differs (Data Acquisition vs. I2C Multiplexer).

Q: Is the MAX14502AETL+ suitable as a substitute?

A: No. The MAX14502AETL+ is a USB Interface component with a 40-TQFN package and 1.8V–3.3V supply range. It does not provide I2C multiplexing functionality and requires different PCB layout and signal routing.

Q: What is the significance of the Moisture Sensitivity Level (MSL) difference?

A: The PCA9541D/03,112 has MSL 1 (Unlimited), while the CA91L862A-50IEV has MSL 3 (168 Hours). MSL 3 components require controlled storage and handling within 168 hours of moisture exposure, affecting supply chain logistics and shelf-life management.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original component's regulatory certifications.

Q: Why are these parts listed as substitutes if they are not compatible?

A: The substitute list reflects manufacturer-recommended alternatives from the original data source. Compatibility assessment requires detailed functional specification review beyond the parameters provided in this reference.