The recommended layout and routing for the MAX7321AEE+T involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is also recommended.
The power-up sequence for the MAX7321AEE+T should be such that the VCC pin is powered up before the VEE pin. The VCC pin should be powered up slowly, with a rise time of at least 1ms, to avoid any potential latch-up issues.
The maximum current that can be sourced or sunk by the MAX7321AEE+T is 25mA per port. However, the total current sourced or sunk by all ports should not exceed 100mA to avoid overheating the device.
The MAX7321AEE+T should be terminated with a 1kΩ to 10kΩ pull-up resistor to VCC and a 1kΩ to 10kΩ pull-down resistor to VEE for each port. The termination resistors should be placed close to the device to minimize signal reflections.
The recommended operating temperature range for the MAX7321AEE+T is -40°C to +85°C. However, the device can operate up to +125°C with reduced performance and reliability.
MAX7321AEE+T datasheet
by Maxim Integrated Products
