SNAS736C June 2017 – April 2019 LMX2595
The OSCin supports single-ended or differential clocks. There must be a AC-coupling capacitor in series before the device pin. The OSCin inputs are high-impedance CMOS with internal bias voltage. TI recommends putting termination shunt resistors to terminate the differential traces (if there are 50-Ω characteristic traces, place 50-Ω resistors). The OSCin and OSCin* side should be matched in layout. A series AC-coupling capacitors should immediately follow OSCin pins in the board layout, then the shunt termination resistors to ground should be placed after.
Input clock definitions are shown in Figure 56: