Products > Integrated Circuits (ICs) > Programmable Logic ICs > SP508CF

Images are for reference only.


Rugged 40Mbps, 8 Channel Multiprotocol Transceiver with Programmable DCE/DTE and Termination Resistors

  • Package/Case :
  • QFP80
  • Product Categories :
  • Comply with RS232, 422,485,644, X21, V35 standard devices
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 585


Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.

SP508CF Product Details


The SP508 is a monolithic device that supports eight (8) popular serial interface standards for Wide Area Network (WAN) connectivity. The SP508 is fabricated using a low power BiCMOS process technology, and incorporates a Sipex regulated charge pump allowing +5V only operation. Sipex's patented charge pump provides a regulated output of +5.8V, which will provide enough voltage for compliant operation in all modes. Eight (8) drivers and eight (8) receivers can be configured via software for any of the above interface modes at any time. The SP508 requires no additional external components for compliant operation for all of the eight (8) modes of operation other than four capacitors used for the internal charge pump. All necessary termination is integrated within the SP508 and is switchable when V.35 drivers and V.35 receivers, or when V.11 receivers are used. The SP508 provides the controls and transceiver availability for operating as either a DTE or DCE.

Additional features with the SP508 include internal loopback that can be initiated in any of the operating modes by use of the LOOPBACK pin. While in loopback mode, receiver outputs are internally connected to driver inputs creating an internal signal path bypassing the serial communications controller for diagnostic testing. The SP508 also includes a latch enable pin with the driver and receiver address decoder. The internal V.11 or V.35 receiver termination can be switched off using a control pin (TERM_OFF) for monitoring applications. All eight (8) drivers and receivers in the SP508 include separate enable pins for added convenience. The SP508 is ideal for WAN serial ports in networking equipment such as routers, access concentrators, network muxes, DSU/CSU's, networking test equipment, and other access devices.


■ 20Mbps Differential Transmission Rates 

■ 15kV ESD Tolerance for Analog I/Os 

■ Internal Transceiver Termination Resistors for V.11/V.35 

■ Interface Modes: ✓ RS-232 (V.28) ✓ EIA-530 (V.10 & V.11) ✓ X.21 (V.11) ✓ EIA-530A (V.10 & V.11) ✓ RS-449/V.36 ✓ V.35 (V.10 & V.11) 

■ Software Selectable Protocols with 3-Bit Word 

■ Eight Drivers and Eight Receivers 

■ V.35/V.11 Receiver Termination Network Disable Option 

■ Internal Line or Digital Loopback Testing 

■ Adheres to NET1/NET2 and TBR-2 Requirements

■ Easy Flow-Through Pinout 

■ +5V Only Operation 

■ Individual Driver/Receiver Enable/Disable Controls 

■ Operates in DTE or DCE Mode


■ Router 

■ Frame Relay 

■ CSU 

■ DSU 

■ PBX 

■ Secure Communication Terminals


SP508CF Pinout
(Picture: Pinout)

SP508CF Block Diagram
(Picture: Diagram)

Technical Parameters

  • Manufacturer
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free / RoHS Compliant
  • Package/Case
  • QFP80

SP508CF Related Products

Ratings and Reviews (1)

  • 5 / 5
  • 5 Stars 100%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • **etty***

    Top Seller, Highly Recommended

  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Dec 11 - Dec 16 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

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


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • 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 SP508CF is the original manufacturer or agent of SIPEX?
We have a professional business development department to strictly test and verify the qualifications of SIPEX original manufacturers and agents. All SIPEX suppliers must pass the qualification review before they can publish their SP508CF devices; we pay more attention to the channels and quality of SP508CF products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of SP508CF chips? Including SIPEX original factory information, Comply with RS232, 422,485,644, X21, V35 standard devices application, SP508CF pictures?
You can use Jotrin's intelligent search engine, or filter by Comply with RS232, 422,485,644, X21, V35 standard devices category, or find it through Sipex Corporation (Exar) Information page.
Q: Are the SIPEX's SP508CF price and stock displayed on the platform accurate?
The SIPEX's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for SP508CF, 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 SP508CF?
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 SP508CF we delivered, we will accept the replacement or return of the SP508CF 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 SP508CF.
(3)The SP508CF 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 SP508CF datasheet pdf, SP508CF pin diagram?
Need any After-Sales service, please feel free contact us:

Sipex Corporation (Exar)

Sipex Corporation is a semiconductor company that designs, manufactures and markets a broad portfolio of analog integrated circuits for original equipment manufacturers in the networking, computing, communications, and optical storage markets....
  • SP507CF
    SP507CF +5V, Single Chip WAN Multi-Mode Serial Transceiver
  • SP506CF
    SP506CF 5V, Single Chip WAN Multi-Mode Serial Transceiver
  • SP504MCF
    SP504MCF WAN Multi-Mode Serial Transceiver
  • SP505ACF
    SP505ACF WAN Multi-Mode Serial Transceiver
  • SP503EM
    SP503EM Multiprotocol Transceiver
  • SP504CF
    SP504CF Application Note

Certificates & Honor

Certificates & Honor