LE88276DLC Equivalent & Substitute Parts

Part Overview

The LE88276DLC is a telecom interface integrated circuit manufactured by Microchip Technology, designed for PCM-based telecommunications applications. This component operates across a supply voltage range of 4.75V to 35V and features a 2-circuit configuration in an 80-LQFP surface mount package. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

LE88276DLC

Microchip TechnologyIn Stock: 25403LE88276DLC Datasheet

Current PartRFQ

LE9632RQC

Microchip TechnologyIn Stock: 1000277LE9632RQC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LE88276DLC is determined by the following critical parameters:

• Manufacturer: Microchip Technology (maintains design continuity and support)
• Category: Interface (functional classification for telecom applications)
• Function: Telecom Circuit with PCM interface capability
• Number of Circuits: 2-circuit configuration
• Supply Voltage Range: 4.75V ~ 35V compatibility
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)
• Moisture Sensitivity Level: MSL 3 (168 Hours) for handling and storage

The LE9632RQC qualifies as a manufacturer-recommended substitute based on matching functional requirements, regulatory compliance, and electrical specifications. While the package format differs (53QFN versus 80-LQFP), the electrical and functional parameters remain compatible for PCM-based telecom interface applications.

Parameter Comparison

Engineering Selection Recommendations

The LE9632RQC is the manufacturer-recommended substitute for the obsolete LE88276DLC. Both components are manufactured by Microchip Technology and maintain identical regulatory compliance status (ROHS3 Compliant, REACH Unaffected). The substitute part carries active product status, ensuring ongoing availability and manufacturer support.

The primary design consideration is the package transition from 80-LQFP to 53QFN. This change requires PCB layout modification and may affect thermal management characteristics. Both packages are surface mount technologies suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the LE9632RQC directly replace the LE88276DLC without PCB modifications?

A: No. The package format differs (80-LQFP versus 53QFN), requiring PCB footprint redesign. Pin configuration and electrical connectivity must be verified against the respective datasheets before implementation.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts maintain identical RoHS3 compliance and REACH Unaffected status. Moisture sensitivity levels are equivalent (MSL 3, 168 Hours), requiring identical handling and storage protocols.

Q: Why is the LE88276DLC classified as obsolete?

A: Microchip Technology has transitioned this product line to the LE9632 series, which offers improved packaging efficiency and active manufacturing support. The LE9632RQC represents the current-generation equivalent.

Q: What is the inventory status for these parts?

A: The LE88276DLC has 25,300 pieces available as new original stock. The LE9632RQC has 1,000,199 pieces available, providing significantly greater supply availability for new designs and ongoing production.

Q: Are the electrical specifications identical between these parts?

A: Both parts function as telecom interface circuits with PCM capability and operate within the 4.75V to 35V supply voltage range. Detailed electrical specifications, including timing parameters and signal characteristics, must be confirmed through the respective component datasheets.