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.
Results: 1,981
Authorized Distributors
Non-Authorized Stocking Distributors
TCA9536CDTMR
$ 0.881
Remote 4-Bit I²C and SMBus I/O expander with configuration register and interrupt 8-X2SON -40 to 125
Texas InstrumentsDistributor
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XL9555
$ 0.246
Integrated Circuit Interface Expander; 2.3-5.5V; -40+85 deg.C; SMD; TSSOP24
Xinluda Information Technology Co., LtdTCA9539AQPWRQ1
$ 1.310
Automotive 16-bit 1.65 to 5.5V I²C/SMBus I/O expander with interrupt, reset and config registers 24-TSSOP -40 to 125
Texas InstrumentsDistributor
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TCAL6416RADTOR
$ 1.490
16-bit translating I²C-bus/SMBus I/O expander with interrupt, reset, sticky registers, and agile 24-X2QFN -40 to 125
Texas InstrumentsTCAL9539RPWR
$ 1.100
16-bit I2C/SMBus I/O expander with interrupt, reset and advanced sticky registers 24-TSSOP
Texas InstrumentsDistributor
SKU
Min
Pkg
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XL8574T
$ 0.258
2.5¦ÌA 1mA 25mA I2C-bus 8 2.3V 6V 100KHz SOP-16 10.2mm*7.5mm
Xinluda Information Technology Co., Ltd