The recommended layout and routing for the MAX7323ATE+ involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure the MAX7323ATE+ is properly powered and decoupled, use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) between the VCC and GND pins, and place it as close to the device as possible. Additionally, use a 1uF to 10uF capacitor between the VCC and BYP pins to filter the internal voltage regulator.
The MAX7323ATE+ can sink or source up to 25mA per I/O pin, with a total current limit of 100mA for all I/O pins combined.
To configure the MAX7323ATE+ for I2C or SMBus operation, connect the SCL pin to the clock signal, the SDA pin to the data signal, and the A0-A2 pins to the address lines. For I2C operation, connect the INT pin to a pull-up resistor and a capacitor to the VCC pin. For SMBus operation, connect the SMBALERT pin to a pull-up resistor and a capacitor to the VCC pin.
The MAX7323ATE+ can operate at frequencies up to 400kHz for I2C mode and up to 100kHz for SMBus mode.
MAX7323ATE+ datasheet
by Maxim Integrated Products
