Description:The 85304-01 is a low skew, high performance 1-to-5 Differential-to-3.3V LVPECL fanout buffer and a member of the family of High Performance Clock Solutions from IDT. The 85304-01 has two selectable clock inputs. The CLKx, nCLKx pairs can accept most standard differential input levels. The clock enable is internally synchronized to eliminate runt clock pulses on the outputs during asynchronous assertion/ deassertion of the clock enable pin. Guaranteed output and part-to-part skew characteristics make the 85
Renesas provides a recommended PCB layout guide in their application note (R01AN2732EU0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement.
Renesas recommends following their thermal design guidelines, using a heat sink if necessary, and ensuring proper airflow around the device. Additionally, the device's thermal shutdown feature can be enabled to prevent damage from overheating.
Renesas recommends using a low-ESR capacitor (e.g., ceramic or film capacitor) for CIN, with a value between 1-10uF. For COUT, a capacitor with a value between 10-100uF is recommended, depending on the output voltage and load requirements.
Check the PG pin's voltage level, ensure the input voltage is within the specified range, and verify that the output voltage is within the desired range. Also, check for any short circuits or overcurrent conditions that may be causing the PG output to malfunction.
While the datasheet specifies a minimum input voltage of 2.7V, Renesas recommends operating the device with an input voltage between 3.0V and 5.5V for optimal performance and efficiency.
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85304AG-01LF Overview
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