The recommended layout and routing for the DS2152L involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the crystal oscillator. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure the DS2152L is properly powered and decoupled, use a high-quality power supply with low noise and ripple, and decouple the device with 0.1uF and 10uF capacitors between VCC and GND. Additionally, use a 1uF capacitor between VCCO and GND for the output stage.
The maximum crystal oscillator frequency that can be used with the DS2152L is 25MHz. However, it's recommended to use a crystal oscillator frequency between 10MHz and 20MHz for optimal performance.
To configure the DS2152L for a specific clock frequency, use the FSEL pins to select the desired frequency range, and then use the internal PLL to multiply the crystal oscillator frequency to the desired clock frequency. The specific configuration will depend on the desired clock frequency and the crystal oscillator frequency used.
The maximum output current of the DS2152L is 15mA per output pin. However, it's recommended to limit the output current to 10mA per pin to ensure reliable operation and to prevent overheating.