SN7325

SN7325 www.DataSheet4U.com Multi-function I/O Drive General Description The SN7325 2-wire serial-interfaced peripheral features 16 I/O ports. Ports are divided into eight push pull I/Os and eight open-drain I/Os and transition detection. Any of the 16 I/O ports can be configured as an input or an output. All I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the INT output. The interrupt is latched, allowing detection of transient changes. When the SN7325 is subsequently read through the serial interface, any pending interrupt is cleared. The open-drain outputs are rated to sink 20mA at 0.26V headroom, and are capable of driving LEDs. The RST input clears the serial interface, terminating any I2C communication to or from the SN7325. The SN7325 uses two address inputs to allow 4 I2C slave addresses. The slave address also determines the power-up logic state for the I/O ports. ________ _______ Features „ „ „ „ „ „ „ „ 400kHz I2C Serial Interface 2.4V to 5.5V Operation 8 Push-Pull I/O ports 8 Open-Drain I/O Ports, Rated to 20mA Sink Current at 0.26V headroom Selectable I/O Port Power-Up Default Logic States INT Output Alerts Change on Inputs Low 0.3μA (typ) Standby Current -40°C to +125°C Temperature Range _______ Applications „ „ „ „ „ „ Cell Phones Notebooks SAN/NAS Satellite Radio Servers Automotive Typical Application Circuit 2.8V Vbat 1uF 4.7k SCL 4.7k SDA 4.7k INT RST 100k INT RST SDA SCL V...