LE88286TQCT Equivalent & Substitute Parts

Part Overview

The LE88286TQCT is a telecom interface IC manufactured by Microchip Technology, designed for PCM-based telecom circuit applications. This device is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. The LE88286TQCT operates across a wide supply voltage range of 4.75V to 35V and is packaged in a 64-QFN surface mount configuration. Due to its obsolete status, alternative components must be evaluated to ensure continuity of supply and system compatibility.

Substiute Parts

LE88286TQCT

Microchip TechnologyIn Stock: 1106LE88286TQCT Datasheet

Current PartRFQ

LE9622RQCT

Microchip TechnologyIn Stock: 1000200LE9622RQCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LE88286TQCT is determined by the following critical parameters:

• Manufacturer Continuity: Both the main part and substitute are manufactured by Microchip Technology, ensuring design consistency and support continuity.
• Functional Category: Both components operate within the telecom interface category.
• Interface Protocol: The main part operates on PCM interface; the substitute supports both PCM and SPI, providing expanded interface compatibility.
• Surface Mount Packaging: Both components utilize surface mount technology, maintaining assembly process compatibility.
• Compliance Standards: Both parts meet ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.
• Moisture Sensitivity: Both components share MSL 3 rating, indicating identical handling and storage requirements.

The LE9622RQCT represents an active product alternative within the Microchip telecom interface portfolio, offering modern supply voltage options and confirmed availability.

Parameter Comparison

Engineering Selection Recommendations

The LE9622RQCT is the designated manufacturer substitute for the obsolete LE88286TQCT. Selection of this alternative is supported by:

• Active Product Status: The LE9622RQCT maintains active production status with confirmed inventory availability, ensuring long-term supply security.
• Regulatory Compliance: Both components maintain identical ROHS3 and REACH compliance certifications, eliminating regulatory re-qualification requirements.
• Moisture Handling: Matching MSL 3 ratings ensure equivalent handling, storage, and assembly process compatibility without process modification.
• Manufacturer Support: Microchip Technology's continued support of the LE9622RQCT series provides access to technical documentation and design resources.

Frequently Asked Questions (FAQ)

Q: Can the LE9622RQCT directly replace the LE88286TQCT in existing designs?

A: Direct replacement requires evaluation of specific application requirements. While both components share PCM interface capability, the LE9622RQCT operates at lower supply voltages (1.8V, 2.5V, 3.3V) compared to the LE88286TQCT (4.75V ~ 35V). Circuit redesign may be necessary if the original design relies on the extended voltage range. The LE9622RQCT also differs in package configuration (53-QFN versus 64-QFN) and circuit count (1 versus 2 circuits), requiring PCB layout and schematic modifications.

Q: What are the key differences in package specifications?

A: The LE88286TQCT uses a 64-QFN package, while the LE9622RQCT uses a 53-VFQFN with exposed pad in a 7x7 configuration. These are distinct physical packages requiring different PCB footprints and assembly considerations. Pin assignments and functionality mapping must be verified before implementation.

Q: Are there any supply voltage compatibility concerns?

A: Yes. The LE88286TQCT supports 4.75V to 35V operation, while the LE9622RQCT is specified for 1.8V, 2.5V, or 3.3V operation. Applications requiring the extended voltage range of the original component cannot use the LE9622RQCT without circuit modification or additional voltage regulation.

Q: Do both components share identical compliance certifications?

A: Yes. Both the LE88286TQCT and LE9622RQCT are ROHS3 compliant, REACH unaffected, and carry identical MSL 3 moisture sensitivity ratings. No additional compliance documentation or re-qualification is required from a regulatory standpoint.

Q: What is the significance of the LE9622RQCT's SPI interface capability?

A: The LE9622RQCT supports both PCM and SPI interfaces, while the LE88286TQCT supports PCM only. This expanded interface capability may provide additional design flexibility for new implementations, though existing PCM-based designs do not require this feature.