SI5344H-42H Datasheet, PDF (36/56 Pages) Silicon Laboratories – HIGH-FREQUENCY,

Si5344H/42H
4.8.3. Differential Output Terminations
Note: In this document, the terms, LVDS and LVPECL, refer to driver formats that are compatible with these signaling
standards.
The differential output drivers support both ac coupled and dc coupled terminations as shown in Figure 21.
DC Coupled LVDS/LVPECL
VDDO = 3.3V, 2.5V, 1.8V
OUTx
OUTx
50
100
50
AC Coupled LVDS/LVPECL
VDDO = 3.3V, 2.5V, 1.8V
50
OUTx
OUTx
100
50
Internally
self-biased
AC Coupled LVPECL
VDD – 1.3V
VDDO = 3.3V, 2.5V
50
50
OUTx
50
OUTx
50
Figure 21. Supported Differential Output Terminations
4.8.4. LVCMOS Output Terminations
LVCMOS outputs are dc-coupled as shown in Figure 22.
VDDO = 3.3V, 2.5V, 1.8V
OUTx
Rs
OUTx
3.3V, 2.5V, 1.8V
LVCMOS
50
50
Rs
Figure 22. LVCMOS Output Terminations
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Rev. 1.0