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 micro-controller …

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 (P0 and …

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通用远 …

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 excess current …

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)].