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SI5315B-C-GM Datasheet, PDF (12/54 Pages) Silicon Laboratories – SYNCHRONOUS ETHERNET/TELECOM JITTER ATTENUATING CLOCK MULTIPLIER | |||
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Si5315
1.2. Three-Level (3L) Input Pins (With External Resistors)
VDD
Iimm 18 kï
VDD
Si5315
75 kï
External Driver
18 kï
75 kï
One of eight resistors from a Panasonic EXB-D10C183J
(or similar) resistor pack
Figure 4. Three Level Input Pins
Table 6. Three-Level Input Pins (With External Resistors)
Parameter
Symbol
Min
Max
Input Low Current
Iill
â30 µA
â
Input Mid Current
Iimm
â11 µA
â11 µA
Input High Current
Iihh
â
â30 µA
Note: The above currents are the amount of leakage that the 3L inputs can tolerate from an external driver.
ï® Any resistor pack may be used.
ï¬ï The Panasonic EXB-D10C183J is an example.
ï¬ï PCB layout is not critical.
ï® Resistor packs are only needed if the leakage current of the external driver exceeds the listed currents.
ï® If a pin is tied to ground or VDD, no resistors are needed.
ï® If a pin is left open (no connect), no resistors are needed.
12
Rev. 1.0
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