R42.50

Exc VAT: R36.96
quantity
Stock Status
0 available immediately
97 available in 12 working days

I/O Expander - MCP23008

Stock code: COM-15099

Add another eight pins to your microcontroller using a MCP23008 port expander. The MCP23008 uses two I2C pins which can be shared with other I2C devices, and in exchange gives you eight general purpose pins. You can set each of eight pins to be input, output, or input with a pullup. There's even the ability to get an interrupt via an external pin when any of the inputs change so you don't have to keep polling the chip.

Use this chip from 2.7-5.5V (good for any 3.3V or 5V setup), and you can sink/source up to 20mA from any of the I/O pins so this will work for LEDs and such. Team it up with a high-power MOSFET if you need more juice. DIP package means it will plug into any breadboard or perfboard.

You can set the I2C address by tying the ADDR0-2 pins to power or ground, for up to eight unique addresses. That means eight chips can share a single I2C bus - that's 64 I/O pins!

Features:

  • 8-bit remote bidirectional I/O port
  • High-speed I2C interface (MCP23008)
  • Hardware address pins
  • Configurable interrupt output pin
  • Configurable interrupt source
  • Polarity Inversion register for input port data polarity config.
  • External reset input
  • Low standby current: 1 µA (max.) • Operating voltage:
    • 1.8V to 5.5V @ -40°C to +85°C I2C @ 100 kHz SPI @ 5 MHz
    • 2.7V to 5.5V @ -40°C to +85°C I2C @ 400 kHz SPI @ 10 MHz
    • 4.5V to 5.5V @ -40°C to +125°C I2C @ 1.7 kHz SPI @ 10 MHz

Documents:


Related Products

I2C EEPROM - 256k Bit (24LC256)

This is an I2C, 256Kbit, Serial Electrically Erasable PROM (EEPROM), capable of operation across a 2..

R42.50 (inc VAT)

Shift Register 8-Bit High-Power - TPIC6B595

Simple shift register IC that can control high-voltage/high-current devices directly! Clock in data ..

R42.50 (inc VAT)

30% off

Analog to Digital Converter - MCP3002

The MCP3002 has a 10-bit analog to digital converter (ADC) with a simple to use SPI interface. Use t..

R37.80 (inc VAT)

USB Relay Controller with 6-Channel I/O

This USB Relay Controller / Data Acquisition Module, from Cana Kit, allows computer controlled switc..

R1,195.00 (inc VAT)

SparkFun 16 Output I/O Expander Breakout - SX1509

Are you low on I/O? No problem! The SX1509 Breakout is a 16-channel GPIO expander with an I2C interf..

R121.00 (inc VAT)

Shift Register 8-Bit - SN74HC595

The SN74HC595N is a simple 8-bit shift register IC. Simply put, this shift register is a device that..

R14.00 (inc VAT)

Schmitt Trigger - CD40106B

The CD40106BE consists of six Schmitt-trigger circuits. Each circuit functions as an inverter with S..

R13.00 (inc VAT)

Bourns Absolute Encoder (EAW0J-B24-AE0128L)

The Bourns Absolute Encoder is a digital control knob that provides 128 unique results evenly spaced..

R170.50 (inc VAT)

High Speed Optoisolator - 6N137

This diode-transistor photocouplers consist of an LED, optically coupled to a high speed photodetect..

R21.50 (inc VAT)