I/O Expanders
Devices in this family are used in conjunction with microcontrollers, microprocessors, or similar devices for the purpose of increasing the number of signal connections available for connecting peripheral devices. The typical concept of operation involves the use of serial communications requiring only a few I/O lines on the host device to read/write the status of many input/output pins on the expander device. The technique exchanges speed of communication for increased connectivity, and is best suited for applications where fast response is not critical, such as in many human interface applications.
Sourcing Microchip Technology I/O Expanders: in-stock lines for quick ship, BOM matching for multi-line builds, and original-channel screening — not keyword stuffing.
Product List
Total Components: 91
| Product | Pricing | Datasheet | Number of I/O | Interrupt Output | Current - Output Source/Sink | Clock Frequency | Features | Interface | Mounting Type | Operating Temperature | Output Type | Voltage - Supply | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 MCP23S08T-E/SO Microchip Technology | 1 $1.5500 | 8 | Yes | 25mA | 10 MHz | POR | SPI | Surface Mount | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 18-SOIC (0.295", 7.50mm Width) | 18-SOIC | 7,400 | |
 MCP23008-E/P Microchip Technology | 1 $1.5500 | 8 | Yes | 25mA | 1.7 MHz | POR | I²C | Through Hole | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 18-DIP (0.300", 7.62mm) | 18-PDIP | 7,415 | |
MCP23S08-E/P Microchip Technology | 1 $1.6100 | 8 | Yes | 25mA | 10 MHz | POR | SPI | Through Hole | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 18-DIP (0.300", 7.62mm) | 18-PDIP | 3,769 | |
 MCP25020-I/SL Microchip Technology | 1 $3.6600 | 8 | No | 25mA | 25 MHz | EEPROM, POR, PWM | CAN V2.0b | Surface Mount | -40°C ~ 85°C | Push-Pull | 2.75V ~ 5.5V | 14-SOIC (0.154", 3.90mm Width) | 14-SOIC | 2,290 | |
 MCP23017-E/ML Microchip Technology | 1 $7.7142 100 $6.1714 500 $5.1428 | 16 | Yes | 25mA | 1.7 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 28-VQFN Exposed Pad | 28-QFN (6x6) | 25 | |
 MCP23016T-I/SO Microchip Technology | 1 $2.1400 | 16 | Yes | 25mA | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 3,023 | |
MCP23S17-E/ML Microchip Technology | 1 $15.4286 100 $12.3428 500 $10.2857 | 16 | Yes | 25mA | 10 MHz | POR | SPI | Surface Mount | -40°C ~ 125°C | Push-Pull | 1.8V ~ 5.5V | 28-VQFN Exposed Pad | 28-QFN (6x6) | 35 | |
 MCP23S18-E/MJ Microchip Technology | 1 $9.4500 100 $7.5600 500 $6.3000 | 16 | Yes | 25mA | 10 MHz | - | SPI | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 24-VFQFN Exposed Pad | 24-QFN (4x4) | 50 | |
 MCP23016-I/SS Microchip Technology | 1 $15.5400 100 $12.4320 500 $10.3600 | 16 | Yes | 25mA | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 2V ~ 5.5V | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP | 300 | |
 MCP23009T-E/SS Microchip Technology | 1 $1.6300 | 8 | Yes | 25mA | 3.4 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP | 4,111 | |
 MCP23S09T-E/MG Microchip Technology | 1 $1.7100 | 8 | Yes | 25mA | 10 MHz | - | SPI | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 16-VFQFN Exposed Pad | 16-QFN (3x3) | 5,430 | |
MCP23009-E/SS Microchip Technology | 1 $1.5300 | 8 | Yes | 25mA | 3.4 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP | 5,031 | |
MCP23018T-E/SO Microchip Technology | 1 $2.0500 | 16 | Yes | 25mA | 3.4 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 2,387 | |
MCP23S09-E/SO Microchip Technology | 1 $1.6200 | 8 | Yes | 25mA | 10 MHz | - | SPI | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 18-SOIC (0.295", 7.50mm Width) | 18-SOIC | 9,071 | |
MCP23018-E/MJ Microchip Technology | 1 $51.8571 100 $41.4857 500 $34.5714 | 16 | Yes | 25mA | 3.4 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 24-VFQFN Exposed Pad | 24-QFN (4x4) | 7,000 | |
MCP23016-I/SO Microchip Technology | 1 $2.1400 | 16 | Yes | 25mA | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 4,730 | |
 MCP23018-E/SP Microchip Technology | 1 $2.1400 | 16 | Yes | 25mA | 3.4 MHz | POR | I²C | Through Hole | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 28-DIP (0.300", 7.62mm) | 28-SPDIP | 7,121 | |
MCP23S18-E/SO Microchip Technology | 1 $2.1600 | 16 | Yes | 25mA | 10 MHz | - | SPI | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 2,419 | |
 MCP23018T-E/SS Microchip Technology | 1 $2.2500 | 16 | Yes | 25mA | 3.4 MHz | POR | I²C | Surface Mount | -40°C ~ 125°C | Open Drain | 1.8V ~ 5.5V | 24-SSOP (0.209", 5.30mm Width) | 24-SSOP | 7,961 | |
MCP23016T-I/SS Microchip Technology | 1 $2.0850 | 16 | Yes | 25mA | 400 kHz | POR | I²C | Surface Mount | -40°C ~ 85°C | Push-Pull | 2V ~ 5.5V | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP | 8,755 |