What the key ratings mean for the BOM
The SMBus output is the only communication path — there is no PWM tachometer output or standalone alarm pin. That means the host controller must poll the register bank over SMBus to read temperature and fan speed; the part does not assert a hardware interrupt. If your design relies on an alert pin to trigger a fan-fail response, this part requires a firmware workaround or an external comparator.
Lifecycle and sourcing posture
The ADT7468ARQZ carries an Active lifecycle status and is ROHS3 compliant.
