Description:The 8535-31 is a low skew, high performance 1-to-4 3.3V Crystal Oscillator/LVCMOS-to-3.3V LVPECL fanout buffer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The 8535-31 has selectable single ended clock or crystal inputs. The single ended clock input accepts LVCMOS or LVTTL input levels and translate them to 3.3V LVPECL levels. The output enable is internally synchronized to eliminate runt pulses on the outputs during asynchronous assertion/deassertion of the clock en
Renesas provides a recommended PCB layout guide in their application note (APL-AN-115) for the 8535AG-31LF, which includes thermal vias, copper pours, and component placement guidelines to minimize thermal resistance and ensure reliable operation.
Renesas recommends following the guidelines in their EMC application note (APL-AN-116) for the 8535AG-31LF, which includes design considerations for PCB layout, component selection, and shielding to minimize electromagnetic interference (EMI) and ensure compliance with relevant EMC standards.
Renesas recommends using a low-ESR ceramic capacitor (X5R or X7R dielectric) with a minimum capacitance of 10uF for CIN and a minimum capacitance of 22uF for COUT, with a maximum ESR of 100mΩ for both capacitors. The capacitor selection should also consider the operating frequency, output current, and voltage ripple requirements.
The 8535AG-31LF has a built-in OCP and SCP feature. To implement these features, connect the OCP pin to a resistor divider network that sets the current limit threshold, and connect the SCP pin to a capacitor that sets the short-circuit detection time. Refer to the datasheet and application notes for specific implementation guidelines.
Renesas recommends a soft-start sequence to prevent inrush currents and ensure reliable startup. The recommended sequence is: 1) Power on the input voltage (VIN), 2) Wait for the internal voltage regulator to stabilize, and 3) Enable the output voltage (VOUT) by setting the EN pin high. The datasheet provides more detailed information on the startup sequence.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
8535AG-31LF Overview
Use the download button to access the 8535AG-31LF schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like 8535A,
or try a keyword search, such as Clock Drivers
