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 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avnet | IMQ82C55AZ96 | 0 | 500 | 11h | |||||||||
| Microchip USA | IMQ82C55AZ96 | 165 | 150 | Tray | USD | 3d | |||||||
| Win Source | WS-IMQ82C55AZ96 | 2360 | 2 | USD | 10h | ||||||||
| ICPartonline | IMQ82C55AZ96 | 28.137 | USD | >1wk | |||||||||
| Antdic Electronics | IMQ82C55AZ96 | 26.108 | USD | 6d |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | PCAL6416AERJ | 12.358 | USD | 10h | |||||||||
| UnikeyIC | PCAL6416AERJ | 11.691 | 186 | Tape & Reel | USD | 2d | |||||||
| Verical | PCAL6416AERJ | 12.358 | 339 | USD | |||||||||
| Microchip USA | PCAL6416AERJ | 2204 | 300 | USD | 3d | ||||||||
| Worldway Electronics | PCAL6416AERJ | 4206 | 7 | Tape & Reel | USD | 14h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | PCA9670PW,112 | 1008 | USD | 10h | |||||||||
| Verical | PCA9670PW,112 | 1008 | 313 | USD | |||||||||
| Microchip USA | PCA9670PW112 | 352 | 600 | Bulk | USD | 3d | |||||||
| Win Source | WS-PCA9670PW,112 | 2760 | 35 | USD | 10h | ||||||||
| Worldway Electronics | PCA9670PW,112 | 6281 | 7 | Bulk | USD | 14h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DigiKey | 296-17437-1-ND | 4 | 1 | Cut Tape | USD | ||||||||
| Mouser | 595-PCF8574ADGVR | 1622 | 1 | Tape & Reel | USD | ||||||||
| Component Stockers USA | PCF8574ADGVR | 853 | USD | >1wk | |||||||||
| Weyland Electronics Group Pte. Ltd. | PCF8574ADGVR | 292 | 1 | Tape & Reel | USD | 2d | |||||||
| Win Source | WS-PCF8574ADGVR | 24.000 | 30 | USD | 10h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Verical | PCA9539D,118 | 8000 | 4K | USD | |||||||||
| Flip Electronics | PCA9539D,118 | 8272 | >1wk | ||||||||||
| Farnell | PCA9539D,118 | 0 | 1 | Cut Tape | USD* | 10h | |||||||
| Microchip USA | PCA9539D,118 | 121 | 3K | Bulk | USD | 3d | |||||||
| Worldway Electronics | PCA9539D,118 | 5956 | 7 | Bulk | USD | 14h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Verical | PCA9673BS,118 | 10 | 2 | USD | |||||||||
| Arrow Electronics | PCA9673BS,118 | 10 | 1 | USD | |||||||||
| Microchip USA | PCA9673BS,118 | 367 | 300 | USD | 3d | ||||||||
| Component Stockers USA | PCA9673BS,118 | 7790 | USD | >1wk | |||||||||
| Worldway Electronics | PCA9673BS,118 | 4542 | 7 | Tape & Reel | USD | 14h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | CAT9554AHV4I-GT2 | 13.007 | USD | 10h | |||||||||
| Verical | CAT9554AHV4I-GT2 | 13.007 | 209 | USD | |||||||||
| Win Source | WS-CAT9554AHV4I-GT2 | 20 | 4 | USD | 10h | ||||||||
| Worldway Electronics | CAT9554AHV4I-GT2 | 11.711 | 7 | Tape & Reel | USD | 14h | |||||||
| Fmall Co., Limited | CAT9554AHV4I-GT2 | 21.590 | USD | >1wk |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | CDP1852CE | 15.332 | USD | 10h | |||||||||
| Win Source | WS-CDP1852CE | 7000 | 10 | USD | 10h | ||||||||
| Hi-Tech Circuit Group Ltd. | CDP1852CE | 15.332 | USD | 4d | |||||||||
| Easev | CDP1852CE | 5678 | USD | >1wk | |||||||||
| Vigor Components | CDP1852CE | 15.332 | USD | 5d |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | TW2828-BA2-CR | 1029 | USD | 10h | |||||||||
| Verical | TW2828-BA2-CR | 1029 | 25 | USD | |||||||||
| Mouser | 968-TW2828-BA2-CR | 12 | 1 | Tray | USD | ||||||||
| Win Source | WS-TW2828-BA2-CR | 50 | 2 | USD | 10h | ||||||||
| Worldway Electronics | TW2828-BA2-CR | 18.963 | 7 | Tray | USD | 14h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | PCA9557D,112 | 300 | USD | 10h | |||||||||
| UnikeyIC | PCA9557D,112 | 282 | 214 | Tube | USD | 2d | |||||||
| Microchip USA | PCA9557D,112 | 285 | 50 | Tube | USD | 3d | |||||||
| Component Stockers USA | PCA9557D,112 | 324 | USD | >1wk | |||||||||
| Worldway Electronics | PCA9557D,112 | 17.565 | 7 | Tube | USD | 14h |