Texas Instruments provides a recommended layout and routing guide in the application note SLVAE04, which includes guidelines for PCB layout, component placement, and routing to minimize noise and ensure optimal performance.
The TRS3221CPW has an internal POR and BOR circuitry. To handle these, ensure that the power supply ramps up slowly (typically 10 ms to 100 ms) and that the voltage supervisor is properly configured. Additionally, consider adding external reset circuitry for added reliability.
Although the datasheet specifies a maximum operating voltage of 5.5 V, it's recommended to limit the voltage on the VCC pin to 5 V to ensure reliable operation and prevent damage to the device.
To minimize power consumption, ensure that the device is in shutdown mode when not in use, and consider using the low-power mode (LPM) feature. Additionally, optimize your system design to reduce the number of transitions on the input/output lines.
The TRS3221CPW has a maximum junction temperature (TJ) of 150°C. Ensure proper thermal design, including heat sinking and airflow, to keep the device within the recommended operating temperature range (–40°C to 85°C).
TRS3221CPW datasheet
by Texas Instruments
