I/O Expanders
ICs for increasing input/output capacity in microcontroller-based systems
I/O expanders add extra digital inputs and outputs to microcontrollers and processors without needing more pins. An I/O expander is ideal for applications like keypads, LEDs, and sensors where pin count is limited but flexibility is key. Integrated I/O expanders connect over I2C, SPI, or serial interfaces to streamline board layout and simplify wiring. Use Octopart to quickly find the I/O expander ICs or other interface components you need. You can then compare suppliers, view datasheets, and check real-time pricing and availability.
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MCP23017 Series 5.5 V 1.7 MHz SMT 16-Bit I2C I/O Expander - SOIC-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23017T-E/SO | 890 | 1 | Cut Tape | USD | ||||||||
| Avnet | 41AH8461 | 890 | 1 | USD | 19h | ||||||||
| Onlinecomponents.com | MCP23017T-E/SO | 855 | 250 | Bulk | USD | ||||||||
| Master Electronics | MCP23017T-E/SO | 855 | 250 | USD | |||||||||
| Arrow Electronics | MCP23017T-E/SO | 129 | 1 | USD |
MCP23S18 Series 5.5 V 10 MHz 16-Bit I/O Expander with Open-Drain Output -SOIC-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S18-E/SO | 465 | 1 | USD | |||||||||
| Future Electronics | MCP23S18-E/SO | 1 | 15 | Tube | USD | ||||||||
| Avnet | MCP23S18-E/SO | 189 | 27 | USD | 19h | ||||||||
| Onlinecomponents.com | MCP23S18-E/SO | 30 | 27 | Bulk | USD | ||||||||
| Arrow Electronics | MCP23S18-E/SO | 243 | 1 | USD |
MCP23017 Series 5.5 V 1.7 MHz SMT 16-Bit I2C I/O Expander - QFN-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23017T-E/ML | 317 | 1 | Cut Tape | USD | ||||||||
| Avnet | 41AH8460 | 419 | 1 | USD | 19h | ||||||||
| Onlinecomponents.com | MCP23017T-E/ML | 3,298 | 250 | Bulk | USD | ||||||||
| Master Electronics | MCP23017T-E/ML | 3,298 | 250 | USD | |||||||||
| Arrow Electronics | MCP23017T-E/ML | 1,600 | 1 | USD |
MCP23S17 Series 5.5 V 10 MHz 16-Bit I/O Expander with Serial Interface - QFN-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S17-E/ML | 255 | 1 | USD | |||||||||
| Avnet | MCP23S17-E/ML | 266 | 1 | USD | 19h | ||||||||
| Onlinecomponents.com | MCP23S17-E/ML | 952 | 61 | Bulk | USD | ||||||||
| Master Electronics | MCP23S17-E/ML | 952 | 61 | USD | |||||||||
| Arrow Electronics | MCP23S17-E/ML | 726 | 1 | USD |
MCP23S17 Series 5.5 V 10 MHz 16-Bit I/O Expander with Serial Interface - QFN-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S17T-E/ML | 877 | 1 | Cut Tape | USD | ||||||||
| Future Electronics | MCP23S17T-E/ML | 9,600 | 1600 | Tape & Reel | USD | ||||||||
| Onlinecomponents.com | MCP23S17T-E/ML | 19,050 | 250 | Bulk | USD | ||||||||
| Master Electronics | MCP23S17T-E/ML | 19,050 | 250 | USD | |||||||||
| Arrow Electronics | MCP23S17T-E/ML | 1,600 | 1 | USD |
Interface – I/O expanders; MICROCHIP; MCP23008T-E/ML; I2C, Serial; Lead Free; 8; QFN
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23008T-E/ML | 23 | 1 | Cut Tape | USD | ||||||||
| Avnet | 41AH8457 | 23 | 1 | USD | 19h | ||||||||
| Onlinecomponents.com | MCP23008T-E/ML | 5,835 | 250 | Bulk | USD | ||||||||
| Arrow Electronics | MCP23008T-E/ML | 6,181 | 1 | USD | |||||||||
| Master Electronics | MCP23008T-E/ML | 5,835 | 250 | USD |
I²C Bus IC Operating temperature: -40...125 °C Power supply: 1.8...5.5 V Package: SOIC-18
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S08-E/SO | 6,039 | 1 | USD | |||||||||
| Avnet | MCP23S08-E/SO | 50 | 42 | USD | 19h | ||||||||
| Onlinecomponents.com | MCP23S08-E/SO | 2,730 | 42 | Bulk | USD | ||||||||
| Master Electronics | MCP23S08-E/SO | 2,730 | 42 | USD | |||||||||
| Arrow Electronics | MCP23S08-E/SO | 297 | 1 | USD |
MCP23008 Series 5.5 V 1.7 MHz 8-Bit I/O Expander with Serial Interface - QFN-20
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23008-E/ML | 1,685 | 1 | USD | |||||||||
| Future Electronics | MCP23008-E/ML | 48 | 20 | Tube | USD | ||||||||
| Onlinecomponents.com | MCP23008-E/ML | 170 | 91 | Bulk | USD | ||||||||
| Arrow Electronics | MCP23008-E/ML | 364 | 1 | USD | |||||||||
| Master Electronics | MCP23008-E/ML | 170 | 91 | USD |
MCP23017 Series 5.5 V 1.7 MHz SMT 16-Bit I2C I/O Expander - SSOP-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23017T-E/SS | 319 | 1 | Cut Tape | USD | ||||||||
| Onlinecomponents.com | MCP23017T-E/SS | 14,005 | 250 | Bulk | USD | ||||||||
| Master Electronics | MCP23017T-E/SS | 14,005 | 250 | USD | |||||||||
| Arrow Electronics | MCP23017T-E/SS | 8,082 | 1 | USD | |||||||||
| DigiKey | MCP23017T-E/SSCT-ND | 31,301 | 1 | Cut Tape | USD |
Microchip MCP23018-E/MJ, 16-CHANNEL 16 Bit I/o Expander 3.4MHZ, I2C, 24-PIN QFN
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23018-E/MJ | 225 | 1 | USD | |||||||||
| Onlinecomponents.com | MCP23018-E/MJ | 364 | 91 | Bulk | USD | ||||||||
| Master Electronics | MCP23018-E/MJ | 364 | 91 | USD | |||||||||
| Arrow Electronics | MCP23018-E/MJ | 2 | 91 | USD | |||||||||
| DigiKey | MCP23018-E/MJ-ND | 4,563 | 1 | Tube | USD |
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