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.
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analog Devices | MAX7322ATE+T | 21.300 | 1 | Tape & Reel | USD | 7h | |||||||
| DigiKey | 175-MAX7322ATE+TCT-ND | 6496 | 1 | Cut Tape | USD | ||||||||
| Newark | MAX7322ATE+T | 0 | 1 | Cut Tape | USD | ||||||||
| Arrow Electronics | MAX7322ATE+T | 0 | 2500 | USD | |||||||||
| Farnell | MAX7322ATE+T | 0 | 1 | Cut Tape | USD* | 10h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | SX1508QBIULTRT | 6000 | USD | 1d | |||||||||
| DigiKey | 600-SX1508QBIULTRTCT-ND | 3000 | 1 | Cut Tape | USD | ||||||||
| Braemac Americas - Symmetry Electronics | SX1508QBIULTRT | 0 | USD | 1h | |||||||||
| Richardson RFPD | SX1508QBIULTRT | Contatto | 3K | USD | 7h | ||||||||
| Avnet | SX1508QBIULTRT | 0 | 3K | USD | 1d |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | NCA9555PWJ | 1 | 1 | Cut Tape | USD | ||||||||
| DigiKey | 1727-NCA9555PWJCT-ND | 1 | 1 | Cut Tape | USD | ||||||||
| Avnet | NCA9555PWJ | 0 | 2500 | USD | 1d | ||||||||
| Farnell | NCA9555PWJ | 1 | 1 | Cut Tape | USD* | 10h | |||||||
| element14 APAC | NCA9555PWJ | 1 | 1 | Cut Tape | USD* | 13h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | NCA9535PW-Q100J | 0 | 1 | Cut Tape | USD | ||||||||
| Avnet | NCA9535PW-Q100J | 0 | 2500 | USD | 1d | ||||||||
| Farnell | NCA9535PW-Q100J | 0 | 1 | Cut Tape | USD* | 10h | |||||||
| element14 APAC | NCA9535PW-Q100J | 0 | 1 | Cut Tape | USD* | 13h | |||||||
| Win Source | WS-NCA9535PW-Q100J | 25.000 | 3 | USD | 1h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UnikeyIC | PCA9555BSHP | 6000 | 6K | Tape & Reel | USD | 2d | |||||||
| Newark | PCA9555BSHP | 0 | 12K | Tape & Reel | |||||||||
| Avnet | PCA9555BSHP | 0 | 6K | USD | 1d | ||||||||
| Arrow Electronics | PCA9555BSHP | 0 | 6K | USD | |||||||||
| Farnell | PCA9555BSHP | 0 | 6K | Custom Reel | USD* | 10h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | NCA9555BY-Q100HP | 3401 | 1 | Cut Tape | USD | ||||||||
| DigiKey | 1727-NCA9555BY-Q100HPCT-ND | 319 | 1 | Cut Tape | USD | ||||||||
| Avnet | NCA9555BY-Q100HP | 0 | 3K | USD | 1d | ||||||||
| Arrow Electronics | NCA9555BY-Q100HP | 0 | 3K | USD | |||||||||
| Farnell | NCA9555BY-Q100HP | 3401 | 1 | Cut Tape | USD* | 10h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | PI4IOE5V96224ZLEX | 0 | 1 | Cut Tape | USD | ||||||||
| Avnet | PI4IOE5V96224ZLEX | 0 | 3500 | USD | 1d | ||||||||
| Arrow Electronics | PI4IOE5V96224ZLEX | 0 | 3500 | USD | |||||||||
| Win Source | WS-PI4IOE5V96224ZLEX | 770 | 25 | USD | 1h | ||||||||
| Aztech | PI4IOE5V96224ZLEX | 11.806 | USD | 2d |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | NCA9539PWJ | 2443 | 1 | Cut Tape | USD | ||||||||
| DigiKey | 1727-NCA9539PWJCT-ND | 1829 | 1 | Cut Tape | USD | ||||||||
| Avnet | NCA9539PWJ | 0 | 2500 | USD | 1d | ||||||||
| Farnell | NCA9539PWJ | 2443 | 1 | Cut Tape | USD* | 10h | |||||||
| element14 APAC | NCA9539PWJ | 2443 | 1 | Cut Tape | USD* | 13h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Newark | PCA9555PWJ | 820 | 1 | Cut Tape | USD | ||||||||
| Avnet | PCA9555PWJ | 0 | 2500 | USD | 1d | ||||||||
| Farnell | PCA9555PWJ | 820 | 1 | Cut Tape | USD* | 10h | |||||||
| element14 APAC | PCA9555PWJ | 820 | 1 | Cut Tape | USD* | 13h | |||||||
| Mouser | 771-PCA9555PWJ | 97 | 1 | Tape & Reel | USD |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Verical | RPI-HUB-MODULE | 5 | 2 | USD | |||||||||
| Newark | RPI-HUB-MODULE | 5 | 1 | USD | |||||||||
| RS (Formerly Allied Electronics) | RPI-HUB-MODULE | 0 | 1 | Bulk | USD | 13h | |||||||
| Farnell | RPI-HUB-MODULE | 11 | 1 | USD* | 10h | ||||||||
| Mouser | 895-RPI-HUB-MODULE | 8 | 1 | Bulk | USD |


