The PCF8574 device is an 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC operation. It provides general-purpose remote I/O expansion for most …

TI’s PCF8574 is a 8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt. Find parameters, ordering and quality information

PCF8574A Remote 8-Bit I/O Expander for I2C Bus Features Low standby-current consumption of 10μA max

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].

In the I/O expander application shown here, the PCF8574 or PCF8574A is used with P0 and P1 as inputs and P2 to P7 as outputs. When used in this configuration, during a write, the inputs …

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].

这款面向两线制双向总线 (I2C) 的 8 位输入/输出 (I/O) 扩展器设计为在 2.5V 至 6V VCC 下运行。PCF8574A 器件通过 I2C 接口 [串行时钟 (SCL)、串行数据 (SDA)] 为大多数微控制器系列提供 …

Oct 21, 2025 · The output high voltage of PCF8574 may just barely be reaching the acceptable range of VBE with its output high voltage. Removing the 47k to GND would eliminate that …

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].