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PCF8575 16-bit I/O Expander
PCF8575
Texas Instrumentsinterface io display
The PCF8575 is a 16-bit quasi-bidirectional I/O expander for the I2C bus. It adds two 8-bit ports with latched, high-current outputs for directly driving LEDs, an open-drain interrupt output, and three hardware address pins for up to eight devices.
In stock
Specifications
9- Operating Voltage
- 2.5 to 5.5 V
- Standby Current Max
- 10 µA
- Supply Current Max
- 200 µA
- Interface
- I2C
- I2c Clock Speed Max
- 400 kHz
- Number Of Io Pins
- 16
- I2c Address Pins
- 3
- Operating Temperature Range
- -40 to 85 °C
- Package
- SSOP, TVSOP, SOIC, TSSOP, VQFN
Pinout
24| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | INT | GPIO | Interrupt output. Connect to VCC through a pull-up resistor. |
| 2 | A1 | — | Address input 1. Connect directly to VCC or ground. |
| 3 | A2 | — | Address input 2. Connect directly to VCC or ground. |
| 4 | P00 | GPIO | P-port input/output. Push-pull design structure. |
| 5 | P01 | GPIO | P-port input/output. Push-pull design structure. |
| 6 | P02 | GPIO | P-port input/output. Push-pull design structure. |
| 7 | P03 | GPIO | P-port input/output. Push-pull design structure. |
| 8 | P04 | GPIO | P-port input/output. Push-pull design structure. |
| 9 | P05 | GPIO | P-port input/output. Push-pull design structure. |
| 10 | P06 | GPIO | P-port input/output. Push-pull design structure. |
| 11 | P07 | GPIO | P-port input/output. Push-pull design structure. |
| 12 | GND | GND | Ground |
| 13 | P10 | GPIO | P-port input/output. Push-pull design structure. |
| 14 | P11 | GPIO | P-port input/output. Push-pull design structure. |
| 15 | P12 | GPIO | P-port input/output. Push-pull design structure. |
| 16 | P13 | GPIO | P-port input/output. Push-pull design structure. |
| 17 | P14 | GPIO | P-port input/output. Push-pull design structure. |
| 18 | P15 | GPIO | P-port input/output. Push-pull design structure. |
| 19 | P16 | GPIO | P-port input/output. Push-pull design structure. |
| 20 | P17 | GPIO | P-port input/output. Push-pull design structure. |
| 21 | A0 | — | Address input 0. Connect directly to VCC or ground. |
| 22 | SCL | I2C | Serial clock line. Connect to VCC through a pull-up resistor. |
| 23 | SDA | I2C | Serial data line. Connect to VCC through a pull-up resistor. |
| 24 | VCC | POWER | Supply voltage |
Interactive pinout
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PCF8575
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