Products > Integrated Circuits (ICs) > Interface ICs > ST16C2550CQ48
  • ST16C2550CQ48

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UART Interface IC 2.97V-5.5V 16B FIFO temp 0C to 70C, UART

  • Package/Case :
  • QFP48
  • Product Categories :
  • Memory chips
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 143


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ST16C2550CQ48 Product Details

The ST16C2550 (C2550) is a dual universal asynchronous receiver and transmitter (UART). The ST16C2550 is an improved version of the PC16550 UART with higher operating speed and faster access times. The C2550 provides enhanced UART functions with 16 byte FIFO’s, a modem control interface, and data rates up to 4 Mbps. Onboard status registers provide the user with error indications and operational status. System interrupts and modem control features may be tailored by external software to meet specific user requirements. Independent programmable baud rate generators are provided to select transmit and receive clock rates from 50 bps to 4 Mbps. The Baud Rate Generator can be configured for either crystal or external clock input. An internal loopback capability allows onboard diagnostics. The C2550 is available in a 44-pin PLCC and 48-pin TQFP packages. The C2550 is fabricated in an advanced CMOS process capable of operating from 2.97 volt to 5.5 volt power supply.

• Portable Appliances
• Telecommunication Network Routers
• Ethernet Network Routers
• Cellular Data Devices
• Factory Automation and Process Controls



Added feature in devices with top mark date code of "A2 YYWW" and newer:
■ 5 Volt Tolerant Inputs
• Pin-to-pin compatible to Exar’s ST16C2450, XR16L2550 and XR16L2750
• Pin-to-pin compatible to TI’s TL16C752B on the 48- TQFP package
• Pin alike XR16C2850 48-TQFP package but without CLK8/16, CLKSEL and HDCNTL inputs
• 2 independent UART channels
■ Up to 4 Mbps with external clock of 64 MHz
■ Up to 1.5 Mbps data rate with a 24 MHz crystal frequency
■ 16 byte Transmit FIFO to reduce the bandwidth requirement of the external CPU
■ 16 byte Receive FIFO with error tags to reduce the bandwidth requirement of the external CPU
■ 4 selectable Receive FIFO interrupt trigger levels
■ Modem control signals (CTS#, RTS#, DSR#, DTR#, RI#, CD#)
■ Programmable character lengths (5, 6, 7, 8) with even, odd, or no parity
• Crystal oscillator or external clock input
• 48-TQFP and 44-PLCC packages

Technical Parameters

  • Manufacturer
  • EXAR
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free / RoHS Compliant
  • Package/Case
  • QFP48

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Estimated Delivery Time: Dec 03 - Dec 08 days (choose Expedited at checkout).

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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.

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    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 ST16C2550CQ48 is the original manufacturer or agent of EXAR?
We have a professional business development department to strictly test and verify the qualifications of EXAR original manufacturers and agents. All EXAR suppliers must pass the qualification review before they can publish their ST16C2550CQ48 devices; we pay more attention to the channels and quality of ST16C2550CQ48 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of ST16C2550CQ48 chips? Including EXAR original factory information, Memory chips application, ST16C2550CQ48 pictures?
You can use Jotrin's intelligent search engine, or filter by Memory chips category, or find it through EXAR Corporation / Maxlinear Information page.
Q: Are the EXAR's ST16C2550CQ48 price and stock displayed on the platform accurate?
The EXAR's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for ST16C2550CQ48, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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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.
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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 ST16C2550CQ48?
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 ST16C2550CQ48 we delivered, we will accept the replacement or return of the ST16C2550CQ48 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 ST16C2550CQ48.
(3)The ST16C2550CQ48 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 ST16C2550CQ48 datasheet pdf, ST16C2550CQ48 pin diagram?
Need any After-Sales service, please feel free contact us:

EXAR Corporation / Maxlinear

Exar Corporation delivers highly differentiated silicon, software and subsystem solutions for industrial, datacom and storage applications. Exar's comprehensive knowledge of end-user markets along with the underlying analog, mixed signal and digital technology has enabled innovative solutions that m...
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