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 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | PCA9557DT | 250 | USD | 22h | |||||||||
| DigiKey | 296-PCA9557DTCT-ND | 315 | 1 | Cut Tape | USD | ||||||||
| Mouser | 595-PCA9557DT | 338 | 1 | Tape & Reel | USD | ||||||||
| Win Source | WS-PCA9557DT | 21.000 | 65 | USD | 23h | ||||||||
| Worldway Electronics | PCA9557DT | 20.926 | 7 | Tape & Reel | USD | 3h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | CAT9554AWI-GT2 | 7603 | USD | 22h | |||||||||
| Verical | CAT9554AWI-GT2 | 7603 | 350 | USD | |||||||||
| Win Source | WS-CAT9554AWI-GT2 | 20 | 50 | USD | 23h | ||||||||
| Worldway Electronics | CAT9554AWI-GT2 | 20.787 | 7 | Tape & Reel | USD | 3h | |||||||
| Fmall Co., Limited | CAT9554AWI-GT2 | 17.210 | USD | >1wk |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mouser | 595-LM8335TLX/NOPB | 2019 | 1 | Tape & Reel | USD | ||||||||
| Worldway Electronics | LM8335TLX/NOPB | 16.619 | 7 | Tape & Reel | USD | 3h | |||||||
| Esaler Electronic | LM8335TLX/NOPB | 3000 | USD | 3d | |||||||||
| Easev | LM8335TLX/NOPB | 1926 | USD | >1wk | |||||||||
| Fmall Co., Limited | LM8335TLX/NOPB | 39.370 | USD | >1wk |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | PCA9557D,112 | 300 | USD | 22h | |||||||||
| UnikeyIC | PCA9557D,112 | 282 | 214 | Tube | USD | 2d | |||||||
| Component Stockers USA | PCA9557D,112 | 324 | USD | >1wk | |||||||||
| Worldway Electronics | PCA9557D,112 | 17.565 | 7 | Tube | USD | 3h | |||||||
| Easev | PCA9557D112 | 6363 | USD | >1wk |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | PCA9518PWT | 11.489 | USD | 22h | |||||||||
| Verical | PCA9518PWT | 9489 | 203 | USD | |||||||||
| DigiKey | 296-PCA9518PWTCT-ND | 546 | 1 | Cut Tape | USD | ||||||||
| Component Stockers USA | PCA9518PWT | 9495 | USD | >1wk | |||||||||
| Win Source | WS-PCA9518PWT | 20.600 | 45 | USD | 23h |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DigiKey | 296-TCA9554DWTCT-ND | 1539 | 1 | Cut Tape | USD | ||||||||
| Mouser | 595-TCA9554DWT | 457 | 1 | Tape & Reel | USD | ||||||||
| Worldway Electronics | TCA9554DWT | 29.380 | 7 | Tape & Reel | USD | 3h | |||||||
| Easev | TCA9554DWT | 2543 | USD | >1wk | |||||||||
| Fmall Co., Limited | TCA9554DWT | 34.540 | USD | >1wk |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rochester Electronics | LV71081E-SPL-MPB-E | 1215 | USD | 22h | |||||||||
| Verical | LV71081E-SPL-MPB-E | 250 | 95 | USD | |||||||||
| Win Source | WS-LV71081E-SPL-MPB-E | 2150 | 1 | USD | 23h | ||||||||
| Worldway Electronics | LV71081E-SPL-MPB-E | 17.864 | 7 | Bulk | USD | 3h | |||||||
| Hi-Tech Circuit Group Ltd. | LV71081E-SPL-MPB-E | 250 | USD | 4d |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Worldway Electronics | LM8325DGR8-1/NOPB | 13.887 | 7 | Tape & Reel | USD | 3h | |||||||
| IC Components Ltd. | LM8325DGR8-1/NOPB | 3697 | USD | 2d | |||||||||
| Esaler Electronic | LM8325DGR8-1/NOPB | 1000 | USD | 3d | |||||||||
| Easev | LM8325DGR8-1/NOPB | 4545 | USD | >1wk | |||||||||
| UnikeyIC | LM8325DGR8-1/NOPB | 13.945 | 8 | Tape & Reel | USD | 2d |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Verical | PCA9554DB,112 | 36 | 11 | USD | |||||||||
| Arrow Electronics | PCA9554DB,112 | 17 | 1 | USD | |||||||||
| Farnell | PCA9554DB,112 | 0 | 1 | Cut Tape | USD* | 8h | |||||||
| Worldway Electronics | PCA9554DB,112 | 13.320 | 7 | Tube | USD | 3h | |||||||
| Easev | PCA9554DB112 | 9073 | USD | >1wk |
| Distributor | SKU | Min | Pkg | Bulk Pricing | Updated | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Farnell | PCA9537DP,118 | 0 | 1 | USD* | 8h | ||||||||
| Win Source | WS-PCA9537DP,118 | 13.243 | 13 | USD | 23h | ||||||||
| Worldway Electronics | PCA9537DP,118 | 11.007 | 7 | Tape & Reel | USD | 3h | |||||||
| Fmall Co., Limited | PCA9537DP,118 | 11.520 | USD | >1wk | |||||||||
| Aztech | PCA9537DP,118 | 10.227 | USD | 1d |


