MCP23009-E/MG Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The MCP23009-E/MG is an 8-bit I/O expander from Microchip with I2C interface, supporting up to 10 MHz clock and 8 configurable I/O lines in a compact 16-pin QFN package. Features interrupt output and programmable pull-ups. In stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- MCP23009-E/MG Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1700(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit I/O port expander with I2C interface operating up to 10 MHz, enabling simple GPIO expansion with just 2 wires
- Interrupt-on-change output pin supports event-driven designs, reducing CPU polling overhead in embedded systems
- Compact 16-pin QFN-16 package with 3x3 mm footprint ideal for space-constrained PCB layouts
Applications
The MCP23009-E/MG is commonly used to expand GPIO capacity in microcontroller-based designs such as industrial control panels, keypad interfaces, and LED driver systems. Its I2C interface allows multiple devices to share a single 2-wire bus, making it efficient for designs requiring up to 8 additional I/O lines. The small QFN-16 package suits portable devices, IoT nodes, and consumer electronics where board space is limited.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-16 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Clock Frequency-Max | 10MHz |
| JESD-30 Code | S-PQCC-N16 |
| JESD-609 Code | e3 |
| Number of Bits | 8 |
| Number of I/O Lines | 8 |
| Number of Ports | 8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC16,.12SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 1mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP23009-E/MG:
suggested
suggested
suggested
Frequently Asked Questions
How many I/O lines does the MCP23009-E/MG provide and what interface does it use?
The MCP23009-E/MG provides 8 configurable I/O lines controlled over an I2C 2-wire interface operating at up to 10 MHz. Each pin can be independently configured as input or output, with optional 100 kΩ internal pull-up resistors for input lines.
For an industrial keypad scanner needing 8 inputs, how does MCP23009-E/MG reduce microcontroller pin usage?
By connecting the MCP23009-E/MG over I2C, a microcontroller needs only 2 pins (SDA and SCL) to manage 8 inputs, freeing up to 6 MCU pins for other functions. The device supports up to 10 MHz I2C clock and interrupt-on-change notification so the host CPU does not need to poll the inputs continuously.
What is the package size of MCP23009-E/MG and how does it compare to DIP alternatives for space-sensitive designs?
The MCP23009-E/MG uses a 16-pin QFN package with a 3x3 mm body, significantly smaller than a 16-pin SOIC or DIP footprint. This makes it suitable for compact IoT modules and wearable designs where board area under 10 mm² per device is required.
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