SI53320-28 Datasheet, PDF (4/51 Pages) Silicon Laboratories – Output Enable option

Si53320-28 Data Sheet
Functional Description
VDD
0.1 µF
100
Si53320/21/22/23/25/27
CLKx
CLKxb
0.1 µF
Figure 2.1. Differential (HCSL, LVPECL, Low-Power LVPECL, LVDS, CML) AC-Coupled Input Termination
DC-Coupled
VDD = 3.3 V or 2.5 V
CMOS
Driver
Rs
VDD
1k
VDD
Si53320/21/22/23/25/27
50
CLKx
CLKxb
VTERM = VDD/2
1k
AC-Coupled
VDD = 3.3 V or 2.5 V
CMOS
Driver
Rs
VBIAS = VDD/2
50
VDD
1k
VDD
1k
VDD
CLKx
CLKxb
Si53320/21/22/23/25/27
Note:
Value for Rs should be chosen so that the total
source impedance matches the characteristic
impedance of the PCB trace.
1k
1k
Figure 2.2. Single-Ended (LVCMOS) Input Termination
VTERM = VDD/2
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