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Pcf8574 Datasheet
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xcluma PCF8574 PCF8574T Module PCF8574 Module IO Expansion Module I/O

Drive 40x4 LCD with PCF8574 - Programming Questions - Arduino Forum

SCH_i2c module schematic_2023-04-07 Resources - EasyEDA

Pcf8574 Datasheet

Using an I²C LCD Display with a Raspberry Pi | Rototron

GitHub - baget/PCF8574lib: Nanoframework Class Library for PCF8574 I2C

PCF8574 - Let's Control It