PCA8574TS Datasheet PDF - NXP

The PCA8574TS is a remote 8-bit I/O expander for I²C-bus with interrupt and provides general-purpose remote I/O expansion via the Two-Wire bi-directional I²C-bus (serial clock (SCL), serial data (SDA)). The devices with eight quasi-bi-directional ports, 400kHz I²C-bus interface, three hardware address inputs and interrupt output operating between 2.3 and 5.5V. The quasi-bi-directional port can be independently assigned as an input to monitor interrupt status or keypads or as an output to activate indicator devices such as LEDs. The system master can read from the input port or write to the output port through a single register.

● I²C-bus to parallel port expander

● Latched outputs with 25mA sink capability for directly driving LEDs

● Active low open-drain interrupt output

● Eight programmable slave addresses using three address pins

● ESD protection exceeds 2000V HBM per JESD22-A114 and 1000V CDM per JESD22-C101

● Latch-up testing is done to JEDEC standard JESD78 which exceeds 100mA

●ESD sensitive device, take proper precaution while handling the device.