The maximum operating frequency of the CD54HC646F3A is 30 MHz, but it can vary depending on the specific application and operating conditions.
To ensure reliable operation in high-temperature environments, it is recommended to follow proper thermal management practices, such as providing adequate heat sinking and airflow, and ensuring that the device is operated within its specified temperature range (-40°C to 125°C).
The recommended power-on sequence for the CD54HC646F3A is to apply power to the VCC pin before applying any input signals, and to ensure that the input signals are stable before applying power to the VCC pin.
To handle bus contention on the CD54HC646F3A, it is recommended to use a bus arbiter or a bus controller to manage access to the bus, and to ensure that only one device is driving the bus at a time.
The maximum capacitive load that the CD54HC646F3A can drive is 100 pF, but it is recommended to limit the capacitive load to 50 pF or less to ensure reliable operation.