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LE89116QVCT Equivalent & Substitute Parts
Part Overview
The LE89116QVCT is a telecom interface IC manufactured by Microchip Technology in a 48-LQFP package configuration. This component functions as a PCM interface circuit for telecommunications applications. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. The obsolete status necessitates evaluation of active alternative products that maintain functional and electrical compatibility.
Substiute Parts
Key Parameters
| Parameter | LE89116QVCT |
|---|---|
| Manufacturer Part Number | LE89116QVCT |
| Manufacturer | Microchip Technology |
| Category | Interface |
| Description | IC TELECOM INTERFACE 48LQFP |
| Interface Type | PCM |
| Number of Circuits | 1 |
| Mounting Type | Surface Mount |
| Package / Case | 48-LQFP |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution of the LE89116QVCT is determined by the following critical parameters:
- Manufacturer: Microchip Technology (same manufacturer ensures design continuity and support)
- Category: Interface (maintains functional classification)
- Interface Type: PCM compatibility (primary functional requirement)
- Number of Circuits: 1 (functional equivalence)
- Mounting Type: Surface Mount (PCB assembly compatibility)
- Compliance Standards: RoHS3 Compliant, REACH Unaffected (regulatory alignment)
- Moisture Sensitivity Level: MSL 3 (handling and storage requirements)
The LE9643AQCT qualifies as a manufacturer-recommended substitute based on these parameters. While the package format differs (36-QFN versus 48-LQFP), the substitute maintains the same manufacturer, interface functionality, circuit count, and compliance certifications. The substitute is in active production status, ensuring long-term availability and technical support.
Parameter Comparison
| Parameter | LE89116QVCT | LE9643AQCT |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Category | Interface | Interface |
| Interface Type | PCM | PCM, Serial, SPI |
| Number of Circuits | 1 | 1 |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 48-LQFP | 36-QFN (4x6) |
| Product Status | Obsolete | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Voltage - Supply | Not specified | 95V |
| Operating Temperature | Not specified | -40°C ~ 85°C |
Engineering Selection Recommendations
The LE9643AQCT is the manufacturer-recommended substitute for the obsolete LE89116QVCT. Selection of this substitute is supported by:
- Manufacturer Continuity: Both components are manufactured by Microchip Technology, ensuring consistent design philosophy and technical support
- Functional Compatibility: Both devices maintain PCM interface functionality as the primary telecom interface standard
- Regulatory Compliance: Both components meet ROHS3 and REACH requirements, ensuring compliance with current environmental and safety standards
- Production Status: The LE9643AQCT is in active production, guaranteeing availability and long-term supply chain stability
- Handling Requirements: Identical MSL ratings ensure equivalent moisture sensitivity management during storage and assembly
The primary design consideration is the package format transition from 48-LQFP to 36-QFN (4x6). This change requires PCB layout modification and footprint redesign. The LE9643AQCT provides extended interface capabilities (Serial and SPI in addition to PCM), which may offer additional functionality for system integration.
Frequently Asked Questions (FAQ)
Q: Can the LE9643AQCT be used as a direct pin-for-pin replacement for the LE89116QVCT?
A: No. The LE9643AQCT uses a 36-QFN (4x6) package, while the LE89116QVCT uses a 48-LQFP package. Pin count and physical footprint differ, requiring PCB layout redesign and schematic verification before implementation.
Q: What is the primary reason for substitution?
A: The LE89116QVCT is classified as obsolete. The LE9643AQCT is the manufacturer-recommended active alternative that maintains functional compatibility for PCM interface applications.
Q: Are there compliance differences between these components?
A: No. Both components are ROHS3 Compliant and REACH Unaffected. Both maintain MSL 3 (168 Hours) moisture sensitivity ratings, ensuring equivalent handling and storage requirements.
Q: Does the LE9643AQCT support the same interface protocols?
A: The LE9643AQCT supports PCM, Serial, and SPI interfaces. The LE89116QVCT supports PCM. The substitute provides additional interface options beyond the original component's capabilities.
Q: What supply voltage does the LE9643AQCT require?
A: The LE9643AQCT operates at 95V supply voltage. Operating temperature range is -40°C to 85°C.
Q: Is the LE9643AQCT available in the same packaging option as the original?
A: No. The LE9643AQCT is supplied in Tape & Reel (TR) packaging in 36-QFN (4x6) format. The original LE89116QVCT was supplied in 48-LQFP format.
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