VSC8558XHJ Equivalent & Substitute Parts

Part Overview

The VSC8558XHJ is a Telecom IC Transceiver manufactured by Microchip Technology, designed for dual media octal applications in 444-BGA (27x27) packaging. This part is classified as obsolete and has been discontinued from active production. Due to its obsolete status, identifying functionally compatible substitute components is essential for system redesign, legacy product support, and procurement continuity. The VSC8558XHJ provided JTAG, SerDes, and Serial interfaces with 8 circuits in a surface-mount configuration.

Substiute Parts

VSC8558XHJ

Microchip TechnologyIn Stock: 1617VSC8558XHJ Datasheet

Current PartRFQ

VSC8658XHJ

Microchip TechnologyIn Stock: 1828VSC8658XHJ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the VSC8558XHJ is determined by the following critical parameters:

• Package Compatibility: Both parts must use 444-BGA (27x27) Exposed Pad packaging to ensure PCB footprint and assembly process alignment
• Mounting Type: Surface mount configuration must be maintained
• Manufacturer Consistency: Microchip Technology maintains design and quality standards across product lines
• RoHS Compliance: ROHS3 compliance ensures regulatory and environmental standards are met
• Functional Category: Interface category classification indicates similar signal processing and transceiver capabilities

The VSC8658XHJ is identified as the manufacturer-recommended substitute. Both parts share identical packaging specifications (444-BGA 27x27), surface-mount configuration, and RoHS3 compliance status. The VSC8658XHJ is currently in active production status, providing long-term availability and supply chain stability compared to the obsolete VSC8558XHJ.

Parameter Comparison

Engineering Selection Recommendations

The VSC8658XHJ is the appropriate substitute for the obsolete VSC8558XHJ based on the following engineering criteria:

• Package Equivalence: Identical 444-BGA (27x27) Exposed Pad packaging ensures direct PCB footprint compatibility without layout modifications
• Regulatory Compliance: Both parts maintain ROHS3 compliance, satisfying environmental and regulatory requirements
• Supply Chain Continuity: The VSC8658XHJ is in active production status, ensuring reliable long-term availability and procurement stability
• Manufacturer Support: Both parts are manufactured by Microchip Technology, maintaining consistent quality standards and technical documentation

The transition from VSC8558XHJ to VSC8658XHJ requires validation of functional requirements specific to your application, as the parts differ in interface specifications and circuit configuration. Consult Microchip Technology technical documentation for detailed functional compatibility assessment.

Frequently Asked Questions (FAQ)

Q: Can the VSC8658XHJ be used as a direct replacement for the VSC8558XHJ?

A: The VSC8658XHJ shares identical packaging (444-BGA 27x27), mounting type (surface mount), and RoHS compliance with the VSC8558XHJ. However, the parts differ in function, interface type, and circuit configuration. Physical compatibility is confirmed; functional compatibility requires application-specific validation.

Q: What is the difference in Moisture Sensitivity Level (MSL) between these parts?

A: The VSC8558XHJ has MSL 1 (Unlimited), while the VSC8658XHJ has MSL 4 (72 Hours). MSL 4 requires storage in controlled humidity conditions and has a 72-hour floor life after moisture exposure. Ensure proper handling and storage procedures are implemented for the VSC8658XHJ.

Q: Why is the VSC8558XHJ obsolete?

A: The VSC8558XHJ has been discontinued by Microchip Technology and is no longer in active production. The VSC8658XHJ represents the current active product line for similar interface applications in the same package format.

Q: Are there any voltage or current differences between these parts?

A: Voltage and current specifications are not provided for the VSC8658XHJ in the available data. Consult Microchip Technology datasheets for complete electrical specifications before finalizing the substitution.

Q: What packaging options are available for the VSC8658XHJ?

A: The VSC8658XHJ is supplied in Tray packaging, whereas the VSC8558XHJ packaging format is not specified. Confirm packaging and handling requirements with your supplier.