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参数资料
| 型号： | W219 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 时钟和缓冲器 |
| 文件页数： | 12/15页 |
| 文件大小： | 175K |
| 代理商： | W219 |
W219B
PRELIMINARY
Document #: 38-07220 Rev. *A
Page 12 of 15
Intel is a registered trademark of Intel Corporation.
Group Skew and Jitter Limits
Output Group
CPU
SDRAM
APIC
48MHz
3V66
PCI
REF
Pin-Pin Skew Max.
175 ps
250 ps
250 ps
250 ps
175 ps
500 ps
N/A
Cycle-Cycle Jitter
250 ps
250 ps
500 ps
500 ps
500 ps
500 ps
1000 ps
Duty Cycle
45/55
45/55
45/55
45/55
45/55
45/55
45/55
Nom Vdd
2.5V
3.3V
2.5V
3.3V
3.3V
3.3V
3.3V
Skew, Jitter
Measure Point
1.25V
1.5V
1.25V
1.5V
1.5V
1.5V
1.5V
Clock Output Wave
2.5V Clocking
Interface
3.3V Clocking
Interface
Test Point
Test Load
T
PERIOD
Duty Cycle
T
HIGH
2.0
1.25
0.4
T
LOW
T
RISE
T
FALL
T
LOW
T
RISE
T
FALL
T
PERIOD
Duty Cycle
T
HIGH
2.4
1.5
0.4
Output
Buffer
Figure 8. Output Buffer
Ordering Information
Ordering Code
Package Name
H
Package Type
W219B
48-pin SSOP (300 mils)
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