PI6C180VEX Pericom Semiconductor, PI6C180VEX Datasheet - Page 6

• Manufacturer Part Number: PI6C180VEX
• Description: Clock Buffer Precision 1 18 Clock Buffer
• Manufacturer: Pericom Semiconductor

Specifications of PI6C180VEX

• Number Of Outputs: 18
• Propagation Delay (max): 5 ns
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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