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  • ST16C554

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Voltage Regulator IC; Output Current:350mA; Output Voltage:2.5V; Package/Case:8-TSSOP; Supply Voltage Max:6V; Current Rating:350mA; Leaded Process Compatible:Yes; Output Current Max:350mA; Output Voltage Max:2.5V

  • Package/Case :
  • PLCC
  • Product Categories :
  • Programmable Logic ICs
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 1145


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ST16C554 Product Details

The ST16C554/554D (554) is a quad Universal Asynchronous Receiver and Transmitter (UART) with 16 bytes of transmit and receive FIFOs, selectable receive FIFO trigger levels and data rates of up to 1.5 Mbps. Each UART has a set of registers that provide the user with operating status and control, receiver error indications, and modem serial interface controls. An internal loopback capability allows onboard diagnostics. The 554 is available in a 64-pin LQFP and a 68-pin PLCC package. The 64-pin package only offers the 16 mode interface, but the 68-pin package offers an additional 68 mode interface which allows easy integration with Motorola processors. The ST16C554CQ64 (64-pin) offers three state interrupt output while the ST16C554DCQ64 provides continuous interrupt output. The 554 combines the package interface modes of the 16C554 and 68C554 on a single integrated chip.

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


• Pin-to-pin compatible with the industry standard ST16C454, ST68C454, ST68C554, TI’s TL16C554A and Philips’ SC16C554B
• Intel or Motorola Data Bus Interface select
• Four independent UART channels
■ Register Set Compatible to 16C550
■ Data rates of up to 1.5 Mbps at 5 V
■ Data rates of up to 500 Kbps at 3.3V
■ 16 byte Transmit FIFO
■ 16 byte Receive FIFO with error tags
■ 4 Selectable RX FIFO Trigger Levels
■ Full modem interface
• 2.97V to 5.5V supply operation
• Crystal oscillator or external clock input

Technical Parameters

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

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Estimated Delivery Time: Dec 10 - Dec 15 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 ST16C554 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 ST16C554 devices; we pay more attention to the channels and quality of ST16C554 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of ST16C554 chips? Including EXAR original factory information, application, ST16C554 pictures?
You can use Jotrin's intelligent search engine, or filter by Programmable Logic ICs category, or find it through EXAR Corporation / Maxlinear Information page.
Q: Are the EXAR's ST16C554 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 ST16C554, 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 ST16C554?
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 ST16C554 we delivered, we will accept the replacement or return of the ST16C554 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 ST16C554.
(3)The ST16C554 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 ST16C554 datasheet pdf, ST16C554 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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