LE88286DLC Equivalent & Substitute Parts

Part Overview

The LE88286DLC is a telecom interface integrated circuit manufactured by Microchip Technology, designed for PCM-based telecommunications applications. This device is classified as obsolete, which necessitates identification of active equivalent parts for ongoing system support and new designs. The LE88286DLC operates across a wide supply voltage range of 4.75V to 35V and is housed in an 80-LQFP surface mount package.

Substiute Parts

LE88286DLC

Microchip TechnologyIn Stock: 6056LE88286DLC Datasheet

Current PartRFQ

LE9622RQC

Microchip TechnologyIn Stock: 1000258LE9622RQC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LE9622RQC is identified as the manufacturer-recommended substitute for the LE88286DLC. Substitution eligibility is determined by the following criteria:

Common Functional Parameters:

• Manufacturer: Microchip Technology (same source)
• Category: Interface (same functional class)
• Primary Interface: PCM (maintains core protocol compatibility)
• RoHS Status: ROHS3 Compliant (equivalent environmental compliance)
• MSL Rating: 3 (168 Hours) (identical moisture sensitivity)
• REACH Status: REACH Unaffected (equivalent regulatory status)

Substitution Constraints: The LE9622RQC operates at reduced supply voltages (1.8V, 2.5V, 3.3V) compared to the LE88286DLC (4.75V ~ 35V). This represents a functional shift from a high-voltage telecom interface to a low-voltage subscriber line interface circuit (SLIC). The LE9622RQC adds SPI interface capability and operates within a defined temperature range (-40°C ~ 85°C), whereas the LE88286DLC does not specify operating temperature limits.

Parameter Comparison

Engineering Selection Recommendations

Selection between the LE88286DLC and LE9622RQC must account for the following factors:

Product Status: The LE88286DLC is obsolete. The LE9622RQC is active and supported by Microchip Technology, ensuring continued availability and technical support.

Compliance & Certifications: Both parts maintain ROHS3 compliance and identical MSL ratings, satisfying equivalent environmental and handling requirements. Both are REACH Unaffected and classified under ECCN EAR99.

Voltage & Power Architecture: The LE88286DLC supports high-voltage operation (4.75V ~ 35V), suitable for legacy telecom infrastructure. The LE9622RQC operates at low voltages (1.8V, 2.5V, 3.3V), typical of modern digital systems. Substitution requires verification that system power architecture can accommodate the reduced voltage range.

Circuit Count & Interface Capability: The LE88286DLC provides two circuits with PCM interface. The LE9622RQC provides one circuit with dual PCM and SPI interfaces. Applications requiring dual-circuit operation or high-voltage operation cannot directly substitute the LE9622RQC without architectural redesign.

Frequently Asked Questions (FAQ)

Q: Can the LE9622RQC directly replace the LE88286DLC in existing designs?

A: Direct replacement is not possible without system redesign. The LE9622RQC operates at significantly lower supply voltages (1.8V, 2.5V, 3.3V versus 4.75V ~ 35V) and provides one circuit instead of two. PCM interface compatibility exists, but power supply and circuit count differences require hardware modification.

Q: What is the primary reason for substitution?

A: The LE88286DLC is obsolete. The LE9622RQC is the manufacturer-recommended active alternative from Microchip Technology, ensuring long-term availability and technical support.

Q: Are there package compatibility considerations?

A: No. Both parts are surface mount devices, but use different packages: the LE88286DLC uses 80-LQFP, while the LE9622RQC uses 53-VFQFN with exposed pad. PCB layout and footprint redesign is required.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH Unaffected, carry identical MSL ratings (3, 168 Hours), and share the same ECCN and HTSUS classifications.

Q: What interface protocols are supported?

A: The LE88286DLC supports PCM only. The LE9622RQC supports both PCM and SPI, providing additional interface flexibility for new designs.