PCF8574DGVR TI I/O Expanders

The PCF8574DGVR is an 8-bit I/O expander for the two-line bidirectional I2C bus, designed for 2.5V to 6V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without using a data-direction control signal. At power-on, the I/Os are high. In this mode, only a current source to VCC is active. Key specifications include low standby-current consumption of 10 µA max, open-drain interrupt output, latch-up performance exceeding 100 mA per JESD 78 Class II, and compatibility with most microcontrollers. Housed in a 20-pin TVSOP (DGV) package, it operates over -40°C to 85°C. Applications include servers, routers, personal computers, personal electronics, and industrial automation products with GPIO-limited processors, where additional I/O lines are needed for switches, sensors, push-buttons, LEDs, and fans. In stock at HL Electronics – request a quote for fast delivery.