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参数资料
| 型号： | W134 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 时钟和缓冲器 |
| 文件页数： | 8/12页 |
| 文件大小： | 188K |
| 代理商： | W134 |
W134M/W134S
8
Table 11
represents stress ratings only, and functional operation at the maximums is not guaranteed.
Table 12
gives the nominal values of the external components and their maximum acceptable tolerance, assuming Z
CH
=28
.
Note:
1.
Do not populate C
F
. Leave pads for future use.
Table 9. Distributed Loop Lock Time Specification
Symbol
t
DISTLOCK
Min.
Max.
5
Units
ms
Description
Time from when Clk/ClkB output is settled to when the phase error between
SynclkN and PclkM falls within the t
ERR,PD
spec in
Table 14
.
Table 10. Supply and Reference Current Specification
Parameter
I
POWERDOWN
I
CLKSTOP
I
NORMAL
I
REF,PWDN
Description
Min.
--
Max.
250
Unit
μA
“
Supply
”
current in Power-down state (PwrDnB=0)
“
Supply
”
current in Clk Stop state (StopB=0)
--
65
mA
“
Supply
”
current in Normal state (StopB=1,PwrDnB=1)
--
100
mA
Current at VDDIR or VDDIPD reference pin in Power-down
state (PwrDnB=0)
--
50
μA
I
REF,NORM
Current at VDDIR or VDDIPD reference pin in Normal or Clk
Stop state (PwrDnB=1)
--
2
mA
Table 11. Absolute Maximum Ratings
Parameter
V
DD, ABS
V
I, ABS
Description
Min.
–
0.5
Max.
4.0
Unit
V
Max. voltage on V
DD
with respect to ground
Max. voltage on any pin with respect ground
–
0.5
V
DD
+0.5
V
Table 12. External Component Values
Parameter
Description
Min.
Max.
Unit
pF
R
S
R
P
C
F
C
MID
Serial Resistor
39
±5%
Parallel Resistor
51
±5%
Edge Rate Filter Capacitor
4
–
15
[1]
±10%
0.1
μ
F
AC Ground Capacitor
470 pF
±20%
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