PI6C180 데이터 시트보기 (PDF) - Pericom Semiconductor
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PI6C180 Datasheet PDF : 7 Pages
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PI6C180
Precision 1-18 Clock Buffer
PCB Layout Suggestion
1
2
C1
VDD
3
4
5
VSS
6
C2
VDD
7
8
9
VSS
10
11
C3
VDD
12
13
14
VSS
15
C4
VDD
16
17
18
VSS
19
C5
VDD
20
21
VSS
22
C6
VDD
23
24
48
47
C11
46
VDD
45
44
43
VSS
C10
42
VDD
41
40
39
VSS
38
C9
37
VDD
36
35
34
VSS
C8
33
VDD
32
31
30
VSS
C7
29
VDD
28
27
VSS
26
VSS
25
Ferrite Bead VCC
C12
22uF
Via to GND Plane
Via to VDD Plane
Void in Power Plane
Notes:
1. This is only a suggested layout. There may be alternate solutions depending on actual PCB design and layout.
2. As a general rule, C1-C11 should be placed as close as possible to their respective VDD.
3. Recommended capacitor values:
C1-C11 = 0.1µF, ceramic
C12 = 22µF
PI6C180
100/66 MHz
18 22Ω
Clock from
SDRAM
Chipset
CI
SDRAM
DIMM
Spec.
Figure 2. Design Guidelines
6
PS8141F
12/13/04
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