PM5308-FEI Equivalent & Substitute Parts

Part Overview

The PM5308-FEI is a Telecom Interface IC designed for SONET/SDH applications, manufactured by Microchip Technology. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain system continuity and support ongoing procurement requirements. The PM5308-FEI provides SONET/SDH interface functionality with JTAG, Microprocessor, Parallel, and Serial interface options, operating at 1.2V supply voltage.

Substiute Parts

PM5308-FEI

Microchip TechnologyIn Stock: 728PM5308-FEI Datasheet

Current PartRFQ

PM5377-FEI

Microchip TechnologyIn Stock: 33273PM5377-FEI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM5308-FEI is determined by the following critical parameters:

• Functional Equivalence: SONET/SDH interface capability
• Supply Voltage: 1.2V operation
• Manufacturer Consistency: Microchip Technology
• Compliance Standards: ROHS3 Compliant, MSL 3 (168 Hours)
• Circuit Count: Single circuit configuration
• Product Status: Active status for ongoing availability

The PM5377-FEI is identified as the manufacturer-recommended substitute. Both parts share identical core functional specifications, voltage requirements, and compliance certifications. The primary distinction is product status: PM5308-FEI is obsolete while PM5377-FEI maintains active production status.

Parameter Comparison

Engineering Selection Recommendations

The PM5377-FEI is the designated manufacturer-recommended substitute for the obsolete PM5308-FEI. Both components maintain identical electrical specifications, including 1.2V supply voltage operation and single-circuit configuration. Both parts satisfy ROHS3 compliance requirements and share equivalent moisture sensitivity classifications.

The PM5377-FEI offers the advantage of active product status with significantly higher inventory availability (33,200 pcs vs. 685 pcs), ensuring long-term procurement viability. The interface specification difference (PM5308-FEI supports JTAG, Microprocessor, Parallel, and Serial; PM5377-FEI supports Microprocessor) must be evaluated against specific application requirements to confirm functional compatibility.

Both components carry identical HTSUS classification (8542.39.0001), supporting consistent regulatory and tariff treatment. The ECCN designation differs between parts (5A991C vs. 5A991G), which may impact export compliance considerations depending on destination jurisdiction.

Frequently Asked Questions (FAQ)

Q: What is the primary reason for substituting PM5308-FEI with PM5377-FEI?

A: The PM5308-FEI is classified as obsolete, while PM5377-FEI maintains active production status. This substitution ensures continued component availability and supply chain reliability for SONET/SDH interface applications.

Q: Are the electrical specifications identical between PM5308-FEI and PM5377-FEI?

A: Both components operate at 1.2V supply voltage, contain a single circuit, and are classified as SONET/SDH interface ICs. Compliance certifications (ROHS3, MSL 3) are equivalent.

Q: What is the interface difference between these parts?

A: PM5308-FEI supports JTAG, Microprocessor, Parallel, and Serial interfaces. PM5377-FEI supports Microprocessor interface. Application-specific interface requirements must be confirmed before substitution.

Q: Are packaging specifications provided for these components?

A: Packaging information is not specified in the available technical parameters for PM5308-FEI. PM5377-FEI is supplied in Tray packaging. Detailed package specifications should be obtained from the manufacturer datasheet.

Q: Do these components have different export compliance classifications?

A: Yes. PM5308-FEI carries ECCN 5A991C while PM5377-FEI carries ECCN 5A991G. Export compliance requirements should be verified based on destination jurisdiction and end-use application.

Q: What inventory levels are available for each part?

A: PM5308-FEI has 685 pcs in stock (obsolete status). PM5377-FEI has 33,200 pcs in stock (active status), providing substantially greater procurement flexibility.