LE88264TQC Equivalent & Substitute Parts

Part Overview

The LE88264TQC is a telecom interface IC designed for battery switch applications in 64-QFN packaging. Manufactured by Microchip Technology, this component operates as a 2-circuit battery switch with 4-wire serial interface capability. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

LE88264TQC

Microchip TechnologyIn Stock: 2925LE88264TQC Datasheet

Current PartRFQ

LE9642PQC

Microchip TechnologyIn Stock: 39295LE9642PQC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LE88264TQC is based on the following critical parameters:

• Manufacturer: Microchip Technology (maintained for design continuity and support)
• Function: Battery switch or equivalent telecom interface switching capability
• Interface: 4-wire serial communication protocol
• Number of Circuits: 2-circuit configuration
• Mounting Type: Surface mount technology
• Compliance: ROHS3 compliance and EAR99 classification
• Moisture Sensitivity: MSL 3 rating

The LE9642PQC qualifies as a manufacturer-recommended substitute despite packaging differences, as it maintains functional equivalence through identical interface architecture, circuit count, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LE9642PQC is the manufacturer-recommended substitute for the obsolete LE88264TQC. Selection of this substitute is supported by:

• Active Product Status: The LE9642PQC maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both components maintain ROHS3 compliance and identical EAR99 export classification
• Functional Equivalence: Both devices provide 2-circuit interface switching with 4-wire serial communication architecture
• Moisture Sensitivity Parity: Identical MSL 3 rating ensures equivalent handling and storage requirements
• Microchip Technology Lineage: Direct manufacturer recommendation confirms design compatibility within the telecom interface product family

Package transition from 64-QFN to 48-QFN requires PCB layout modification and footprint redesign. This substitution is appropriate for new designs and legacy system updates where board-level redesign is feasible.

Frequently Asked Questions (FAQ)

Q: Why is the LE88264TQC classified as obsolete? A: The LE88264TQC has reached end-of-life status within Microchip Technology's product portfolio. The LE9642PQC represents the active successor within the telecom interface product line.

Q: Can the LE9642PQC be used as a direct pin-for-pin replacement? A: No. The LE9642PQC uses 48-QFN packaging compared to the 64-QFN package of the LE88264TQC. PCB redesign and footprint modification are required for implementation.

Q: What are the key functional differences between these components? A: Both components maintain 2-circuit configuration and 4-wire interface architecture. The LE9642PQC is designated as a Subscriber Line Interface Concept (SLIC) device, while the LE88264TQC is specified as a battery switch. Both provide equivalent switching functionality for telecom applications.

Q: Are there any compliance concerns with substitution? A: Both components maintain ROHS3 compliance and EAR99 classification. Moisture sensitivity levels are identical at MSL 3 (168 Hours), ensuring equivalent handling protocols.

Q: What supply voltage and current specifications apply to the substitute? A: The LE9642PQC operates at 3.135V to 3.465V supply voltage with 25mA current consumption. Operating temperature range is -40°C to 85°C. Verify these specifications against your system requirements before implementation.

Q: Is the LE9642PQC available in alternative packaging? A: The LE9642PQC is supplied in tray packaging as a 48-QFN (7x7) component. This represents the standard package offering for this active product.