Products > Integrated Circuits (ICs) > 11C90DC

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Prescaler/Frequency Divider

  • Manufacturer :
  • NS
  • Package/Case :
  • CDIP-16
  • Product Categories :
  • Integrated Circuits (ICs)
  • RoHs Status:
  • Lead free / RoHS Compliant
  • Marking Code:
  • 11C90DC
  • In-stock:
  • 1850


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11C90DC Product Details

General Description
The 11C90 and 11C91 are high-speed prescalers designed specifically for communication and instrumentation applications. All discussions and examples in this data sheet are applicable to the 11C91 as well as the 11C90.
The 11C90 will divide by 10 or 11 and the 11C91 by 5 or 6,both over a frequency range from DC to typically 650 MHz.
The division ratio is controlled by the Mode Control.

The divide-by-10 or -11 capability allows the use of pulse swallowing techniques to control high-speed counting modulos
by lower-speed circuits. The 11C90 may be used with either ECL or TTL power supplies.
In addition to the ECL outputs Q and Q, the 11C90 contains an ECL-to-TTL converter and a TTL output. The TTL output
operates from the same VCC and VEE levels as the counter,but a separate pin is used for the TTL circuit VEE. This minimizes noise coupling when the TTL output switches and also allows power consumption to be reduced by leaving the separate VEE pin open if the TTL output is not used.
To facilitate capacitive coupling of the clock signal, a 400X resistor (VREF) is connected internally to the VBB reference.
Connecting this resistor to the Clock Pulse input (CP) automatically centers the input about the switching threshold.Maximum frequency operation is achieved with a 50% duty cycle.
Each of the Mode Control inputs is connected to an internal 2 kX resistor with the other end uncommitted (RM1 and
RM2). An M input can be driven from a TTL circuit operating from the same VCC by connecting the free end of the associated 2 kX resistor to VCCA. When an M input is driven from the ECL circuit, the 2 kX resistor can be left open or, if required, can be connected to VEE to act as a pull-down resistor.


11C90DC Pinout
(Picture: Pinout)

11C90DC Block Diagram
(Picture: Diagram)

Technical Parameters

  • Manufacturer
  • NS
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free / RoHS Compliant
  • Package/Case
  • CDIP-16

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Estimated Delivery Time: Dec 10 - Dec 15 days (choose Expedited at checkout).

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  • Lead Time
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  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


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  • Hand Fee
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  • charge US$30.00 banking fee.
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  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

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.

Jotrin ESD packing


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 11C90DC is the original manufacturer or agent of NS?
We have a professional business development department to strictly test and verify the qualifications of NS original manufacturers and agents. All NS suppliers must pass the qualification review before they can publish their 11C90DC devices; we pay more attention to the channels and quality of 11C90DC products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of 11C90DC chips? Including NS original factory information, application, 11C90DC pictures?
You can use Jotrin's intelligent search engine, or filter by Integrated Circuits (ICs) category, or find it through NS brand manufacturer page.
Q: Are the NS's 11C90DC price and stock displayed on the platform accurate?
The NS's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for 11C90DC, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
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.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
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 11C90DC?
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 11C90DC we delivered, we will accept the replacement or return of the 11C90DC 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 11C90DC.
(3)The 11C90DC 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.
Q: How to contact us and get support, such as 11C90DC datasheet pdf, 11C90DC pin diagram?
Need any After-Sales service, please feel free contact us:

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