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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MICROCHIP - MCP23017-E/SP - Expander I/O, 16 bits, 1.7 MHz, I2C, S¨¦rie, 1.8 V, 5.5 V, DIP
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23017-E/SP | 204 | 1 | USD | |||||||||
| Avnet | 31K2959 | 355 | 1 | USD | 19h | ||||||||
| Chip One Stop | MCP23017-E/SP | 162 | 1 | Tube | USD | 1h | |||||||
| Onlinecomponents.com | MCP23017-E/SP | 3 345 | 15 | Bulk | USD | ||||||||
| Arrow Electronics | MCP23017-E/SP | 141 | 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 | 1 136 | 1 | USD | |||||||||
| Avnet | MCP23S17-E/ML | 327 | 1 | USD | 19h | ||||||||
| Future Electronics | 3895596 | 2 696 | 1 | Tube | USD | ||||||||
| Chip One Stop | MCP23S17-E/ML | 1 228 | 1 | Tube | USD | 1h | |||||||
| Onlinecomponents.com | MCP23S17-E/ML | 952 | 61 | Bulk | USD |
MCP23008 Series 5.5 V 1.7 MHz 8-Bit I/O Expander with Serial Interface - SSOP-20
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23008-E/SS | 2 570 | 1 | USD | |||||||||
| Avnet | MCP23008-E/SS | 21 | 67 | USD | 19h | ||||||||
| Chip One Stop | MCP23008-E/SS | 2 387 | 1 | Tube | USD | 1h | |||||||
| Onlinecomponents.com | MCP23008-E/SS | 3 475 | 67 | Bulk | USD | ||||||||
| Arrow Electronics | MCP23008-E/SS | 36 | 1 | USD |
Interface – I/O expanders; MICROCHIP; MCP23S17T-E/SS; SPI, Serial; Lead Free; 16; SSOP
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S17T-E/SS | 36 179 | 1 | USD | |||||||||
| Avnet | MCP23S17T-E/SS | 4 200 | 2100 | USD | 19h | ||||||||
| Future Electronics | 7599095 | 4 200 | 2100 | Tape & Reel | USD | ||||||||
| Chip One Stop | MCP23S17T-E/SS | 2 546 | 1 | Cut Tape | USD | 1h | |||||||
| Onlinecomponents.com | MCP23S17T-E/SS | 5 683 | 250 | Bulk | USD |
MCP23S17 Series 5.5 V 10 MHz 16-Bit I/O Expander with Serial Interface - SSOP-28
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S17-E/SS | 4 325 | 47 | USD | |||||||||
| Avnet | MCP23S17-E/SS | 4 325 | 1 | USD | 19h | ||||||||
| Future Electronics | 4560181 | 5 122 | 1 | Tube | USD | ||||||||
| Chip One Stop | MCP23S17-E/SS | 1 737 | 1 | Tube | USD | 1h | |||||||
| Onlinecomponents.com | MCP23S17-E/SS | 11 233 | 47 | Bulk | USD |
MCP23008 Series 5.5 V 1.7 MHz 8-Bit I/O Expander with Serial Interface - SSOP-20
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23008T-E/SS | 1 430 | 1 | Cut Tape | USD | ||||||||
| Avnet | MCP23008T-E/SS | 1 600 | 1600 | USD | 19h | ||||||||
| Future Electronics | 6012640 | 1 600 | 1600 | Tape & Reel | USD | ||||||||
| Chip One Stop | MCP23008T-E/SS | 877 | 1 | Cut Tape | USD | 1h | |||||||
| Onlinecomponents.com | MCP23008T-E/SS | 3 787 | 400 | Bulk | 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 | 2 100 | 2100 | Tape & Reel | USD | ||||||||
| Avnet | MCP23017T-E/SS | 2 100 | 2100 | USD | 19h | ||||||||
| Future Electronics | 9544859 | 2 100 | 2100 | Tape & Reel | USD | ||||||||
| Chip One Stop | MCP23017T-E/SS | 615 | 1 | Cut Tape | USD | 1h | |||||||
| Onlinecomponents.com | MCP23017T-E/SS | 16 730 | 250 | Bulk | USD |
8-Bit Input/Output Expander, SPI Interface, SSOP-20 | Microchip Technology Inc. MCP23S08-E/SS
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S08-E/SS | 2 931 | 1 | USD | |||||||||
| Future Electronics | 2212330 | 4 | 1 | Tube | USD | ||||||||
| Chip One Stop | MCP23S08-E/SS | 78 | 1 | Tube | USD | 1h | |||||||
| Onlinecomponents.com | MCP23S08-E/SS | 2 680 | 67 | Bulk | USD | ||||||||
| DigiKey | MCP23S08-E/SS-ND | 7 564 | 1 | Tube | USD |
I/O Expander, 16 Bit, 16 I/Os, SPI, 1.8 V to 5.5 V, 24 Pins, QFN-EP
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23S18T-E/MJ | 3 603 | 1 | Cut Tape | USD | ||||||||
| Avnet | MCP23S18T-E/MJ | 3 300 | 3300 | USD | 19h | ||||||||
| Chip One Stop | MCP23S18T-E/MJ | 1 235 | 1 | Cut Tape | USD | 1h | |||||||
| Onlinecomponents.com | MCP23S18T-E/MJ | 2 925 | 250 | Bulk | USD | ||||||||
| Arrow Electronics | MCP23S18T-E/MJ | 2 825 | 1 | USD |
I²C Bus IC Operating temperature: -40...+125 °C Power supply: 1.8...5.5 V Package: SSOP-20
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | MCP23017-E/SS | 29 | 1 | USD | |||||||||
| Avnet | MCP23017-E/SS | 135 | 1 | USD | 19h | ||||||||
| Future Electronics | 5534912 | 505 | 1 | Tube | USD | ||||||||
| Chip One Stop | MCP23017-E/SS | 1 055 | 1 | Tube | USD | 1h | |||||||
| Onlinecomponents.com | MCP23017-E/SS | 954 | 47 | Bulk | USD |
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