MCP2221-I/SL Microchip Integrated Circuit (Small Outline Packages) In Stock

Name: MCP2221-I/SL
Brand: Microchip
SKU: MCP2221-I/SL
Availability: InStock

The MCP2221-I/SL is a USB-to-UART and I2C/SMBus protocol bridge from Microchip in a 14-pin SOIC package. Running at up to 12 MHz with 1.5 Mbps data transfer rate, it enables PCs and USB hosts to communicate directly with I2C, SMBus, and UART devices in prototyping and embedded system development.

NOT RECOMMENDEDIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP2221-I/SLSmall Outline Packages

Quick Facts

Manufacturer: Microchip
Package: Small Outline Packages
Pin Count: 14
Lifecycle: NOT RECOMMENDED
Datasheet: MCP2221-I/SL Datasheet PDF
Category: Integrated Circuit
Price: From $1.5033(MOQ 1)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MCP2221-I/SL?

USB to UART, I2C, and SMBus protocol bridge in a single chip
Up to 12 MHz clock frequency with 1.5 Mbps maximum data transfer rate
14-pin SOIC package for compact PCB integration
Supports I2C, SMBus, UART, and USB bus protocols simultaneously
No external USB driver required on most operating systems
Suitable for rapid prototyping, debugging, and production USB-to-serial bridges

What is MCP2221-I/SL used for?

The MCP2221-I/SL is widely used in development tools, USB-to-I2C dongles, and production programming adapters where a laptop or PC must communicate with I2C sensors, EEPROM memories, or UART-based microcontrollers. It is also embedded into diagnostic instruments, factory test fixtures, and IoT gateway boards that bridge USB host interfaces to sensor networks and actuator modules.

What are the specifications of MCP2221-I/SL?

Manufacturer Package Code	SOIC-14
Factory Lead Time	14Weeks
YTEOL	3
Bus Compatibility	I2C; SMBUS; UART; USB
Clock Frequency-Max	12MHz
Data Transfer Rate-Max	1.5MBps
JESD-30 Code	R-PDSO-G14
JESD-609 Code	e3
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP14,.25
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Screening Level	AEC-Q100; TS 16949
Supply Current-Max	15mA
Supply Voltage-Max	5.5V
Supply Voltage-Min	3V
Supply Voltage-Nom	3.3V
Surface Mount	YES
Technology	CMOS
Temperature Grade	INDUSTRIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
uPs/uCs/Peripheral ICs Type	SERIAL IO/COMMUNICATION CONTROLLER, SERIAL
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.01
Country of Origin	Thailand

Where can I find the MCP2221-I/SL datasheet?

MCP2221-I/SL Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP2221-I/SL?

Compatible alternatives and drop-in replacements for MCP2221-I/SL:

MCP2221-I/P

suggested

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What protocols does the MCP2221-I/SL bridge between USB and a target embedded system?

The MCP2221-I/SL bridges USB to UART, I2C, and SMBus, supporting data transfer rates up to 1.5 Mbps. This allows a single chip to connect a USB host computer to a wide range of sensor ICs, EEPROM memories, and microcontrollers using standard serial protocols.

Can the MCP2221-I/SL be used without custom USB drivers on Windows or Linux development machines?

Yes, the MCP2221-I/SL uses standard USB HID and CDC device classes, which are natively supported by Windows, Linux, and macOS without requiring custom driver installation, reducing firmware development time by providing 12 MHz clock rate USB bridging out of the box.

How does the 14-pin SOIC package of the MCP2221-I/SL simplify integration compared to larger protocol bridge chips?

The 14-pin SOIC (SOP-14) package for the MCP2221-I/SL uses a 0.25 mm pitch and compact body, making it easy to route on a 2-layer PCB alongside a USB connector and I2C pull-up resistors without the complex escape routing needed for larger BGA or QFP bridge chips.

What is the factory lead time for the MCP2221-I/SL, and how should procurement teams plan around it?

The MCP2221-I/SL has a typical factory lead time of 14 weeks, which is significant for production planning. Buyers sourcing for volume builds should place orders with adequate buffer or identify authorized distributors holding safety stock to prevent supply chain delays.

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Reference Price (USD)

From $1.5033

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Qty.	Unit Price	Ext. Price
1+	$2.8900	$2.89
25+	$2.4100	$60.25
50+	$1.6432	$82.16
150+	$1.5733	$235.99
250+	$1.5033	$375.83

pcs

Unit price: $2.8900 · Total: $2.89

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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MCP2221-I/SL Microchip Integrated Circuit (Small Outline Packages) In Stock

What are the key features of MCP2221-I/SL?

What is MCP2221-I/SL used for?

What are the specifications of MCP2221-I/SL?

Compliance & Regulatory

Where can I find the MCP2221-I/SL datasheet?

What are equivalent replacements for MCP2221-I/SL?

Frequently Asked Questions

What protocols does the MCP2221-I/SL bridge between USB and a target embedded system?

Can the MCP2221-I/SL be used without custom USB drivers on Windows or Linux development machines?

How does the 14-pin SOIC package of the MCP2221-I/SL simplify integration compared to larger protocol bridge chips?

What is the factory lead time for the MCP2221-I/SL, and how should procurement teams plan around it?

Related Guides

ICL7660ACPAZ Negative Voltage Charge Pump Design Guide

C0402C103K3RACTU 10 nF MLCC Design Guide

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

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