ZHCSP13A september 2021 – june 2023 LMK1D1204P
PRODUCTION DATA
9.4.2 Input Termination
The LMK1D1204P inputs can be interfaced with LVDS, LVPECL, HCSL, or LVCMOS drivers.
LVDS drivers can be connected to LMK1D1204P inputs with DC and AC coupling as shown Figure 9-3 and Figure 9-4, respectively.
Figure 9-3 LVDS Clock Driver Connected to LMK1D1204P Input (DC-Coupled)
Figure 9-4 LVDS Clock Driver Connected to LMK1D1204P Input (AC-Coupled)Figure 9-5 shows how to connect LVPECL inputs to the LMK1D1204P. The series resistors are required to reduce the LVPECL signal swing if the signal swing is >1.6 VPP.
Figure 9-5 LVPECL Clock Driver Connected to LMK1D1204P InputFigure 9-6 shows how to couple a LVCMOS clock input to the LMK1D1204P directly.
Figure 9-6 1.8-V, 2.5-V, or 3.3-V
LVCMOS Clock Driver Connected to LMK1D1204P InputFor unused input, TI recommends grounding both input pins (INP, INN) using 1-kΩ resistors.