VSC8491EV Equivalent & Substitute Parts

Part Overview

The VSC8491EV is a Telecom Interface IC manufactured by Microchip Technology, designed for Ethernet applications with 2-Wire Serial, SPI, and XAUI interface support. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain compatibility across interface protocols, circuit configuration, and supply voltage specifications to ensure seamless integration into existing or new telecom systems.

Substiute Parts

VSC8491EV

Microchip TechnologyIn Stock: 777VSC8491EV Datasheet

Current PartRFQ

VSC8490EV

Microchip TechnologyIn Stock: 986VSC8490EV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VSC8491EV are identified based on the following critical parameters that determine functional equivalence:

• Manufacturer: Microchip Technology (primary source for VSC series components)
• Category: Interface classification for telecom applications
• Function: Ethernet protocol support
• Interface Protocols: 2-Wire Serial, SPI, and XAUI compatibility
• Number of Circuits: 2-circuit configuration
• Supply Voltage: 1V and 1.2V operating range
• Product Status: Active status preferred for ongoing availability and support

The VSC8490EV qualifies as a manufacturer-recommended substitute based on alignment with these core parameters while offering Active product status, ensuring long-term component availability and manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The VSC8490EV is designated as the manufacturer-recommended substitute for the obsolete VSC8491EV. Selection of the VSC8490EV is supported by:

• Manufacturer Endorsement: Direct recommendation from Microchip Technology
• Product Status: Active classification ensures continued manufacturing, technical support, and supply chain availability
• Regulatory Compliance: REACH Unaffected status confirms compliance with current environmental and chemical regulations
• Category Alignment: Both components maintain Interface category classification for telecom applications
• Functional Continuity: Both parts support Ethernet functionality within the VSC series product line

For applications currently using the VSC8491EV, transition to the VSC8490EV is supported by the manufacturer and recommended for new designs requiring long-term component availability.

Frequently Asked Questions (FAQ)

Q: Why is the VSC8491EV classified as Obsolete? A: The VSC8491EV has reached end-of-life status within Microchip Technology's product portfolio. The manufacturer recommends transitioning to the VSC8490EV for continued support and availability.

Q: Can the VSC8490EV directly replace the VSC8491EV in existing designs? A: The VSC8490EV is the manufacturer-recommended substitute and shares core Interface category and Ethernet function specifications. Verification of specific interface protocol requirements (2-Wire Serial, SPI, XAUI) and circuit configuration compatibility with your application is necessary before implementation.

Q: What is the difference between the VSC8491 and VSC8490 base product numbers? A: The base product numbers indicate distinct product lines within the Microchip VSC series. The VSC8490 represents the active, supported alternative to the obsolete VSC8491 platform.

Q: Are there supply voltage compatibility concerns when substituting? A: Both components support 1V and 1.2V supply voltages. Confirm that your application's power supply specifications align with these voltage requirements before component selection.

Q: What is the REACH Unaffected status on the VSC8490EV? A: REACH Unaffected indicates that the VSC8490EV complies with current European chemical and environmental regulations, ensuring regulatory compliance for applications subject to REACH requirements.

Q: Is the VSC8490EV available in the same packaging as the VSC8491EV? A: Packaging specifications are not provided in the available technical data for either component. Contact the manufacturer or authorized distributor to confirm package compatibility for your specific application requirements.