LAN91C96-MS Equivalent & Substitute Parts

Part Overview

The LAN91C96-MS is an Ethernet controller IC manufactured by Microchip Technology, designed for 10 Base-T PHY applications with parallel interface connectivity. This component integrates MAC and PHY functionality in a 100-pin QFP package format. The part is currently in active production status with robust inventory availability. Substitute parts are identified based on functional equivalence within the LAN91C96 base product family, maintaining core electrical and mechanical compatibility parameters.

Substiute Parts

LAN91C96-MS

Microchip TechnologyIn Stock: 1518LAN91C96-MS Datasheet

Current PartRFQ

LAN91C96-MU

Microchip TechnologyIn Stock: 7665LAN91C96-MU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LAN91C96-MS is determined by the following criteria:

• Base Product Family: All substitute parts must share the LAN91C96 base product number, ensuring identical core functionality and silicon design.
• Protocol & Standards: Ethernet protocol with 10 Base-T PHY support must be maintained across all variants.
• Interface Configuration: Parallel interface requirement is non-negotiable for system integration compatibility.
• Supply Voltage: 3.3V supply voltage specification must be identical.
• Operating Temperature: 0°C to 70°C operating range must be supported.
• Compliance & Certifications: ROHS3 compliance and MSL 3 rating must be present in substitute parts.
• Package Compatibility: QFP package variants (100-BQFP and 100-TQFP) are mechanically interchangeable within PCB design constraints.

The LAN91C96-MU qualifies as a direct substitute based on these parameters, with the primary distinction being package geometry (100-TQFP vs. 100-BQFP).

Parameter Comparison

Engineering Selection Recommendations

Both the LAN91C96-MS and LAN91C96-MU maintain identical electrical specifications and compliance certifications. Selection between these variants is determined by PCB layout requirements and available board space. The LAN91C96-MS (100-BQFP, 14x20mm) provides a larger footprint, while the LAN91C96-MU (100-TQFP, 14x14mm) offers a more compact form factor. Both parts are ROHS3 compliant and carry identical MSL ratings, ensuring equivalent reliability and handling requirements. Active production status for both variants ensures supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can LAN91C96-MU replace LAN91C96-MS in existing designs?

A: Electrical substitution is valid due to identical core specifications. However, PCB layout modification is required due to package geometry differences (100-BQFP vs. 100-TQFP). Pin configuration and signal routing must be verified against the respective datasheets before implementation.

Q: Are there supply voltage differences between these variants?

A: No. Both parts operate at 3.3V supply voltage with identical electrical characteristics.

Q: What is the significance of the package designation change?

A: The package designation indicates physical dimensions and pin layout. LAN91C96-MS uses 100-BQFP (14x20mm), while LAN91C96-MU uses 100-TQFP (14x14mm). The TQFP variant is more compact and suitable for space-constrained applications.

Q: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both parts carry MSL 3 rating with 168-hour floor life, requiring identical storage and handling protocols.

Q: Are there any compliance or certification differences?

A: No. Both variants maintain ROHS3 compliance and REACH Unaffected status, ensuring equivalent regulatory compliance.

Q: What determines substitution eligibility for LAN91C96 variants?

A: Substitution is based on shared base product number, identical protocol (Ethernet), matching interface type (Parallel), consistent 10 Base-T PHY standards, 3.3V supply voltage, 0°C to 70°C operating range, and equivalent compliance certifications (ROHS3, MSL 3).