Products > Integrated Circuits (ICs) > Interface ICs > LE9540CUQC
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Fuseholder, In-Line, Twist Lock, 32V, 20A, 1/4 x 1 1/4", Wire Leaded, Fingergrip Cap

Manufacturer :
Microchip Technology, Inc
Package/Case :
Product Categories :
Fuse Holders
RoHs Status:
Lead free / RoHS Compliant

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LE9540CUQC Product Details

The LE9540CUQC Dual Ringing SLIC device is a dual-channel device optimized to provide battery feed, ringing, and supervision on voice loops found in short-loop VoIP applications. This device is optimized with a serial bus to interface to the Broadcom BCM3383/84/85/90 cable SoCs and BCM6818/28/38 PON SoCs. The LE9540CUQC device operates independently from a single, user-adjusted battery and a +3.3 V VCC per channel. Each channel provides forward and reverse battery feed, voice transmission, power ringing, an ultra low-power scan state, ground start (Tip open), and a disconnect state. A test load switch is also included to support integrated test algorithms.


  • Dual Architecture
    • Two fully independent integrated SLIC channel
    • No impulse noise crosstalk in any operation states to the listening channel in forward or reverse active states
  • Two Power Supplies
    • Single user adjusted battery input per channel
    • 3.3 V for VCC
  • High Voltage Design
    • Meets Comcast Ringing requirements without clipping distortion
    • Robust solution with no damage during extended ringing cycles or switching the ringer on and off
    • Allows use of 50 Ω protection resistors and lower cost lower current rated protectors
    • Two Grades
      • Up to -145 V ringing battery Le9540D
      • Up to -100 V ringing battery Le9540C
  • Channel Independent Eight Operating States
    • Scan state for minimal power dissipation
    • Active Forward Battery (Default Power Up State)
    • Active Forward Battery ICV
    • Active Reverse Battery
    • Tip Open Ground Start
    • Wink
    • Ringing
    • Disconnect (Default Power Up Mode)
  • Per Channel Ringing Inputs for Optimized Interface to BCM SoC Devices
    • Allows to accept driving signals from per channel voice outputs as well as from PWM outputs
  • Ultra-Low On-Hook Power
  • Loop Start, Ring Trip, and Ground Start Detections
    • Loop closure detection with hysteresis to minimize dial pulse distortion
  • Thermal Shutdown Protection with Hysteresis
  • Test Load Switch
  • Supports integrated test algorithms


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Technical Parameters

Function Subscriber Line Interface Concept (SLIC) Voltage Supply 3.3V
Interface Serial Mounting Type Surface Mount
Number of Circuits 2 Supplier Device Package 40-QFN

LE9540CUQC Documents

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Estimated Delivery Time: Jan 28 - Feb 02 days (choose Expedited at checkout).

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    We have rich products, can meet your various needs.

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    Minimum order quantity starts from 1pcs.

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    90 days quality guarantee for all products.


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After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that LE9540CUQC is the original manufacturer or agent of MICROCHIP?
We have a professional business development department to strictly test and verify the qualifications of MICROCHIP original manufacturers and agents. All MICROCHIP suppliers must pass the qualification review before they can publish their LE9540CUQC devices; we pay more attention to the channels and quality of LE9540CUQC products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LE9540CUQC chips? Including MICROCHIP original factory information, Fuse Holders application, LE9540CUQC pictures?
You can use Jotrin's intelligent search engine, or filter by Audio & Voice ; Voice Line Circuits (SLICs) ; VE950 - General Purpose Ringing SLIC ; Le9540 category, or find it through Microchip Technology, Inc Information page.
Q: Are the MICROCHIP's LE9540CUQC price and stock displayed on the platform accurate?
The MICROCHIP's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LE9540CUQC, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of LE9540CUQC?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LE9540CUQC we delivered, we will accept the replacement or return of the LE9540CUQC only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LE9540CUQC.
(3)The LE9540CUQC is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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