Products > Integrated Circuits (ICs) > Interface ICs > MCP2221-I/ST
  • MCP2221-I/ST

Images are for reference only.


Hot Sale

Interface Bridges, USB to I2C, SMBUS, UART, 3 V, 5.5 V, TSSOP, 14 Pins, -40 °C

  • Package/Case :
  • TSSOP-14
  • Product Categories :
  • Controllers
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 950


Request for Quotation

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

MCP2221-I/ST Product Details

The MCP2221-I/ST is an USB-to-UART Serial Converter enables USB connectivity in applications that have UART and/or I²C interfaces. The device reduces external components by integrating the USB termination resistors and the oscillator needed for USB operation. It has four GP pins for miscellaneous functionalities (including GPIO, USBCFG, SSPND, Clock Output, ADC, DAC and interrupt detector). It enumerates as a composite USB device after Power-on Reset (POR). The device enumerates as both a Human Interface Device (HID) for I²C, GPIO control and as CDC for the USB-UART converter. The bus-matrix module is the heart of the MCP2221. All other modules are tied together and controlled via the bus-matrix module. This module manages the data transfers between the USB and the UART, the I²C Master module, as well as the command requests generated by the USB host controller and commands for controlling the function of the UART, GPIO, ADC, DAC and Clock Output.



  • Supports full-speed USB (12Mb/s)
  • Implements USB protocol composite device
  • 128-byte Buffer to handle data throughput at any supported UART baud rate
  • Human Interface Device (HID) for both I²C Communication and Control
  • Fully configurable VID and PID assignments and string descriptors
  • Bus-powered or self-powered


Communications & Networking

Technical Parameters

  • Protocol
  • USB
  • Function
  • Bridge, USB to I2C/UART
  • Interface
  • I2C, UART
  • Standards
  • USB 2.0
  • Voltage Supply
  • 3V ~ 5.5V
  • Current Supply
  • 13mA
  • Operating Temperature
  • -40??C ~ 85??C
  • Package / Case
  • 14-TSSOP (0.173, 4.40mm Width)
  • Supplier Device Package
  • 14-TSSOP

MCP2221-I/ST Documents

  • MCP2221 Technical Documentation of Application Note

MCP2221-I/ST Related Products

Ratings and Reviews (1)

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

    schnell geliefert, Ware wie beschrieben, alles in Ordnung

  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Dec 05 - Dec 10 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 MCP2221-I/ST 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 MCP2221-I/ST devices; we pay more attention to the channels and quality of MCP2221-I/ST products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MCP2221-I/ST chips? Including MICROCHIP original factory information, Controllers application, MCP2221-I/ST pictures?
You can use Jotrin's intelligent search engine, or filter by USB Bridges Products category, or find it through Microchip Technology, Inc Information page.
Q: Are the MICROCHIP's MCP2221-I/ST 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 MCP2221-I/ST, 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 MCP2221-I/ST?
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 MCP2221IST we delivered, we will accept the replacement or return of the MCP2221-I/ST 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 MCP2221-I/ST.
(3)The MCP2221-I/ST 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 MCP2221-I/ST datasheet pdf, MCP2221 pin diagram?
Need any After-Sales service, please feel free contact us:

Microchip Technology, Inc

Microchip Technology Inc. is a leading manufacturer of microcontroller and analog products, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Microchip offers outstanding technical support along with d...
  • ATMXT449T-AT
    ATMXT449T-AT Touch Screen Controllers MAXTOUCH AUTO - 448ch Touch IC TQFP100, -40 /...
  • AT24C32E-STUM-T
    AT24C32E-STUM-T EEPROM Serial-2Wire 32K-bit 4K x 8 1.8V/2.5V/3.3V 5-Pin SOT-23 T/R
  • 553SCMGI
    553SCMGI CLOCK BUFFER, 200MHZ, -40 TO 105DEG C ...
  • AS4C32M16D2-25BIN
    AS4C32M16D2-25BIN SDRAM - DDR2 Memory IC 512Mb (32M x 16) Parallel 400MHz 400ps 84-TFBGA...
  • 10M50DAF484C6GES
    10M50DAF484C6GES FPGA MAX 10 Family 50000 Cells 55nm Technology 1.2V 484Pin TFBGA
  • MT47H128M8SH-25E:M
    MT47H128M8SH-25E:M DRAM Chip DDR2 SDRAM 1Gbit 128Mx8 1.8V 60-Pin FBGA

Certificates & Honor

Certificates & Honor