MCP23008T-E/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
MCP23008T-E/ML is a tape-reel packaged 8-bit I2C general-purpose I/O expander from Microchip supporting up to 10 MHz clock in a QFN-20 package. Provides 8 configurable GPIO pins with interrupt-on-change from a 1.8 V to 5.5 V supply. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP23008T-E/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8748(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 I2C GPIO expander with up to 8 hardware-selectable addresses supporting 64 additional I/O pins on one bus
- Interrupt-on-change output pin enables low-power event-driven MCU wakeup without continuous polling
- Compact 4 mm x 4 mm QFN-20 package ideal for space-constrained IoT and wearable PCB designs
Applications
MCP23008T-E/ML is used in IoT sensor hubs and smart home controllers where the host microcontroller requires additional digital I/O lines for button matrices, relay banks, or LED arrays. Its I2C interface with 8 selectable addresses makes it easy to chain multiple expanders on a single 2-wire bus in industrial HMI panels and building automation modules. The tape-reel packaging supports high-volume SMT assembly on automated pick-and-place lines.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-20 |
| Factory Lead Time | 1Week |
| YTEOL | 9 |
| Clock Frequency-Max | 10MHz |
| JESD-30 Code | S-PQCC-N20 |
| 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 | LCC20,.16SQ,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 | 4.5V |
| 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 |
| ## MCP23008T-E/ML Alternates Showing results | Image |
| 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 MCP23008T-E/ML:
suggested
suggested
suggested
Frequently Asked Questions
How does MCP23008T-E/ML differ from MCP23008-E/ML and when should the tape-reel version be ordered?
The 'T' suffix in MCP23008T-E/ML denotes tape-and-reel packaging for automated SMT assembly, while the non-T variant ships in tube or tray form. Both devices are electrically identical: 8-bit I2C GPIO expander in QFN-20, operating from 1.8 V to 5.5 V with 25 mA per-pin drive. Order the tape-reel variant for production quantities exceeding a few hundred units to enable direct loading onto pick-and-place feeders and reduce per-unit handling cost.
What is the maximum I2C clock speed and how many devices can share one I2C bus using MCP23008T-E/ML?
MCP23008T-E/ML supports I2C clock frequencies up to 10 MHz in high-speed mode, and standard 100 kHz and 400 kHz Fast Mode. Up to 8 devices can share a single bus by strapping address pins A0–A2 to unique 3-bit combinations (0x20 to 0x27), providing a total of 64 additional GPIO pins from one pair of SDA/SCL wires.
Can MCP23008T-E/ML drive LEDs directly and what per-pin current is available?
Yes, each of the 8 GPIO pins can source or sink up to 25 mA, sufficient to directly drive a standard 20 mA indicator LED without an external driver transistor. For multi-LED matrix applications, the total package current limit should be observed; up to 8 LEDs at 20 mA each can be multiplexed in sequence to stay within thermal limits for the 4 mm x 4 mm QFN-20 package.
How does the interrupt feature of MCP23008T-E/ML reduce power consumption in embedded systems?
The INT output of MCP23008T-E/ML asserts low when any pin in the GPINTEN register changes state, waking the host MCU from sleep without the MCU needing to poll the I2C bus. This eliminates continuous I2C transactions every 1 ms or less, reducing system active current by up to 80% in event-driven designs such as button-press detection, door sensor monitoring, or keypad scanning in battery-operated devices.
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