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Home > Products > Integrated Circuits (ICs) > Interface - Telecom > LE9502BTC
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LE9502BTC

Manufacturer Part Number:
LE9502BTC
Manufacturer / Brand
Microchip Technology
Part of Description:
IC TELECOM INTERFACE 44TQFP
Datasheets:
LE9502BTC(1).pdfLE9502BTC(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 23700 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number LE9502BTC
Manufacturer / Brand Microchip Technology
Stock Quantity 23700 pcs Stock
Category Integrated Circuits (ICs) > Interface - Telecom
Description IC TELECOM INTERFACE 44TQFP
Lead Free Status / RoHS Status: ROHS3 Compliant
RFQ LE9502BTC Datasheets LE9502BTC Details PDF
LE9502BTC Details PDF for FR.pdf
LE9502BTC Details PDF for KR.pdf
LE9502BTC Details PDF for ES.pdf
LE9502BTC Details PDF for DE.pdf
LE9502BTC Details PDF for IT.pdf
Voltage - Supply 3.3V
Supplier Device Package 44-eTQFP (10x10)
Series -
Package / Case 44-TQFP Exposed Pad
Package Tube
Operating Temperature -40°C ~ 85°C
Number of Circuits 1
Mounting Type Surface Mount
Interface 2-Wire
Function Subscriber Line Interface Concept (SLIC)
Current - Supply -

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
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LE9502BTC Product Details:

The Microsemi LE9502BTC is a sophisticated Subscriber Line Interface Concept (SLIC) integrated circuit designed specifically for telecommunications applications. This high-performance interface IC provides advanced connectivity solutions for telecommunications infrastructure, offering a robust and efficient 2-wire interface mechanism.

Engineered with precision, the LE9502BTC addresses critical design challenges in telecom signal management, featuring a compact 44-eTQFP (10x10) package that enables seamless surface mounting. The device operates reliably across a wide temperature range of -40°C to 85°C, ensuring consistent performance in diverse environmental conditions.

Key specifications include a 3.3V supply voltage and a single-circuit configuration, making it ideal for subscriber line interface applications. The IC is lead-free and fully RoHS compliant, demonstrating Microsemi's commitment to environmental sustainability and modern manufacturing standards.

Primary advantages of this integrated circuit include its excellent signal handling capabilities, compact form factor, and robust thermal performance. The surface-mount design allows for straightforward integration into complex telecommunications equipment, providing engineers with a versatile and reliable interface solution.

The LE9502BTC is particularly well-suited for telecommunications infrastructure, subscriber line management systems, and communication network interfaces. Its specialized SLIC functionality makes it an essential component in developing advanced telecom hardware.

While specific equivalent models are not directly listed in the specifications, similar Microsemi SLIC interface ICs or comparable products from manufacturers like Texas Instruments or Analog Devices might offer analogous functionality. Professional consultation with Microsemi or a detailed comparative analysis would provide more precise alternative model recommendations.

With its comprehensive feature set and professional-grade design, the LE9502BTC represents a high-performance solution for telecommunications interface requirements, delivering reliable and efficient signal management in a compact, environmentally conscious package.

LE9502BTC Key Technical Attributes

Manufacturer Part Number LE9502BTC

Manufacturer Microsemi

Main Category Integrated Circuits (ICs)

Small Classification Interface - Telecom

LE9502BTC Packing Size

Type 44-eTQFP (10x10)

Material Tray

Size 44-TQFP Exposed Pad

Pin Configuration TQFP-44

Thermal Characteristics Moisture Sensitivity Level (MSL) 3 (168 Hours)

Electrical Properties Voltage - Supply 3.3V

LE9502BTC Application

The LE9502BTC Telecom IC from Microsemi is primarily employed in telecommunication applications, effectively managing interface requirements between telephony networks and subscribers.

LE9502BTC Features

The LE9502BTC is designed with impressive features for advanced telecom systems. It utilizes a 2-Wire interface and is encapsulated in a 44-TQFP exposed pad package, aligning with its function as a Subscriber Line Interface Concept (SLIC). This configuration promotes efficient and reliable data transmission and network integrity, enhancing overall telecommunication system performance.

LE9502BTC Quality and Safety Features

The LE9502BTC adheres to RoHS compliance, ensuring that it is manufactured without hazardous substances. The device also integrates quality assurance with a moisture sensitivity level rating of 3 for 168 hours, indicating resilience under specific environmental conditions.

LE9502BTC Compatibility

Its 44-TQFP (10x10) package and standard pin configuration make it compatible with general telecom interfaces, providing seamless integration in a variety of telecommunication equipment designs.

LE9502BTC Datasheet PDF

For accurate and detailed specifications and application guidelines, our website presents the most authoritative and current datasheet PDF for the LE9502BTC model. We highly recommend downloading the datasheet directly from the product page to ensure the information is comprehensive and secured.

Quality Distributor

IC-Components prides itself as a leading distributor for Microsemi products. As a premium partner, we guarantee the authenticity and quality of the LE9502BTC and other components. For competitive pricing and unparalleled support, request a quote directly through our website and experience our exceptional service.

Frequently Asked Questions

What are the primary power supply considerations and limitations when designing with the Microsemi LE9502BTC SLIC for voice line applications?
The Microsemi LE9502BTC Subscriber Line Interface Concept (SLIC) is designed to operate with a single 3.3V supply voltage. When integrating the LE9502BTC, engineers must ensure their power supply rails are stable and capable of handling transient loads that can occur during off-hook detection, ringing, and audio signal transmission. Maintaining this 3.3V supply within tight tolerances is crucial for optimal performance and to prevent potential damage to the device. Ripple and noise on the supply line can directly impact audio quality and SLIC reliability.
How does the 2-wire interface of the LE9502BTC impact its integration into existing telephony infrastructure compared to 4-wire solutions, and what design trade-offs should be anticipated?
The 2-wire interface of the Microsemi LE9502BTC is characteristic of Subscriber Line Interface Circuits (SLICs) designed for direct connection to a single twisted pair of a POTS line. This simplifies connection to legacy telephony networks. Design trade-offs include the inherent limitations of a 2-wire system for simultaneous transmit and receive without advanced hybrid circuits integrated within the SLIC itself, which the LE9502BTC provides. Engineers need to consider the impedance matching requirements and the handling of loop current and voltage for signaling.
What are the specific implications of the LE9502BTC's operating temperature range (-40°C to 85°C) for industrial applications, and how should thermal management be addressed in a high-density design?
The -40°C to 85°C operating temperature range of the Microsemi LE9502BTC makes it suitable for many industrial environments. However, during design, engineers must account for the device's self-heating, especially under continuous operation or high load conditions. In high-density applications, proper PCB layout with adequate copper planes for heat dissipation and potential forced airflow should be evaluated to ensure the LE9502BTC remains within its specified operating limits for long-term reliability. Exceeding these limits can lead to premature component failure or performance degradation.
Under what application scenarios might the Microsemi LE9502BTC be unsuitable, and what alternative component types or architectures should be considered for those use cases?
The Microsemi LE9502BTC is primarily designed for subscriber line interface applications in traditional telephony and Voice over IP (VoIP) gateways. It may be unsuitable for applications requiring very high bandwidth analog signal processing beyond voice frequencies, multiple independent analog channels on a single chip without external multiplexing, or extremely high voltage power feeding capabilities beyond standard POTS line requirements. For such scenarios, engineers might consider dedicated audio codecs with integrated PTT (Push-to-Talk) functionality, or more complex DSP-based solutions with external power amplifiers and protection circuitry.
When considering a replacement for an older or discontinued SLIC, what practical differences and design implications should an engineer expect when migrating to the Microsemi LE9502BTC, particularly if the original part was from a different manufacturer like Analog Devices or Texas Instruments?
Migrating to the Microsemi LE9502BTC from a different manufacturer's SLIC requires a thorough review of datasheets for both parts. Practical differences will likely include variations in pin assignments, power supply requirements (though 3.3V is common, exact current draw may differ), ringing generation characteristics, off-hook detection thresholds, loop current capabilities, and integrated protection features. Design implications could involve modifying PCB layouts, adjusting external component values (like capacitors and resistors for ringing, termination, and protection), and potentially recalibrating detection circuits to match the LE9502BTC's specifications. The 44-eTQFP (10x10) package size and footprint must also be matched or adapted on the PCB.
What are the implications of the LE9502BTC's MSL 3 (168 Hours) rating for assembly and storage, and what precautions are necessary to prevent soldering issues?
An MSL 3 (168 Hours) rating for the Microsemi LE9502BTC indicates that the component is sensitive to moisture and can absorb ambient humidity over time. This means it has a limited "floor life" once the original packaging is opened. To prevent soldering issues like popcorn effect (internal delamination due to rapid vaporization of absorbed moisture), engineers must ensure that the LE9502BTC is stored in dry conditions, preferably within manufacturer-specified humidity levels, and that any component that has exceeded its floor life or has been exposed to humid air for an extended period is properly baked according to J-STD-033 guidelines before soldering.
How can the LE9502BTC's 44-eTQFP (10x10) package with an exposed pad be leveraged for improved thermal performance and reliability in demanding environments?
The exposed pad on the 44-eTQFP (10x10) package of the Microsemi LE9502BTC is specifically designed to be soldered directly to a large copper area on the PCB. This significantly enhances thermal conductivity, allowing heat generated by the SLIC to dissipate more effectively into the board. For demanding environments, proper thermal management via this exposed pad is critical for maintaining the LE9502BTC within its operating temperature limits and ensuring long-term reliability by preventing overheating.
What are the typical challenges and best practices for clocking and configuration of the LE9502BTC, and are there specific interface protocols to consider beyond the basic 2-wire analog interface?
While the core function of the Microsemi LE9502BTC is analog voice line interface, its control and configuration may involve digital interfaces for enabling/disabling features, setting ringing parameters, or monitoring status. Engineers need to consult the detailed datasheet for specific digital control interfaces (e.g., SPI, I2C, or parallel GPIOs) and understand the clocking requirements for these digital paths. Proper clock signal integrity and the correct configuration sequence are essential for the LE9502BTC to operate as intended and avoid initialization failures or unexpected behavior.
For applications requiring extended loop lengths or driving longer subscriber lines with the LE9502BTC, what are the potential limitations and external component considerations for maintaining signal integrity and adequate loop current?
The Microsemi LE9502BTC, like other SLICs, has limits on the loop current it can source and the maximum loop resistance it can reliably detect and operate over. For extended loop lengths, engineers must consider the total loop resistance (including the external wiring and protection components) and ensure it stays within the LE9502BTC's specified limits. If the loop resistance exceeds these limits, it may be necessary to explore higher-power SLICs or implement line extension techniques with external current boosters, which adds complexity and cost. Signal integrity on longer lines can also be affected by impedance mismatches and noise pickup, requiring careful cable selection and potentially filtering.
What are the specific failure modes or reliability concerns an engineer should be aware of when deploying the LE9502BTC in environments with significant electrical transients or lightning surge potential, and what external protection measures are recommended?
The Microsemi LE9502BTC, operating on a subscriber line interface, is inherently vulnerable to electrical transients such as those caused by lightning strikes or power surges on the telephone network. While SLICs often have some internal protection, robust external protection is crucial. Engineers must incorporate surge protection devices like gas discharge tubes (GDTs), Metal Oxide Varistors (MOVs), and transient voltage suppressors (TVS diodes) in conjunction with current-limiting resistors on the line interface to safeguard the LE9502BTC from overvoltage and overcurrent events. The specific type and rating of these protection components will depend on the expected environmental exposure and relevant industry standards (e.g., GR-974).

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