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参数资料
| 型号： | W185H |
| 英文描述： | Miscellaneous Clock Generator |
| 中文描述： | 杂项时钟发生器 |
| 文件页数： | 6/8页 |
| 文件大小： | 116K |
| 代理商： | W185H |
W185
6
DC Electrical Characteristics:
0
°
C < T
A
< 70
°
C, V
DD
= 5V ±10%
Parameter
Description
Test Condition
Min.
Typ.
Max.
Unit
I
DD
t
ON
Supply Current
30
50
mA
Power Up Time
First locked clock cycle after
Power Good
5
ms
V
IL
V
IH
V
OL
V
OH
I
IL
I
IH
I
OL
I
OH
C
I
R
P
Z
OUT
Input Low Voltage
0.15V
DD
V
Input High Voltage
0.7V
DD
V
Output Low Voltage
0.4
V
Output High Voltage
2.4
V
μ
A
μ
A
mA
Input Low Current
Note 1
–
100
Input High Current
Note 1
50
Output Low Current
@ 0.4V, V
DD
= 5V
@ 2.4V, V
DD
= 5V
24
Output High Current
24
mA
Input Capacitance
7
pF
k
Input Pull-Up Resistor
500
Clock Output Impedance
25
AC Electrical Characteristics:
T
A
= 0
°
C to +70
°
C, V
DD
= 3.3V ±5% or 5V±10%
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
f
OSC
Internal Xtal Oscillator
Frequency
Xtal connected to X1, X2
28
40
MHz
f
IN
f
OUT
Input Frequency
External reference
28
75
MHz
Output Frequency
Spread Off, FS2:1 per
Table 2
28
75
MHz
t
R
t
F
t
OD
t
ID
t
JCYC
EMI
RED
Output Rise Time
15-pF load 0.8V
–
2.4V
2
5
ns
Output Fall Time
15-pF load 2.4
–
0.8V
2
5
ns
Output Duty Cycle
15-pF load
40
60
%
Input Duty Cycle
40
60
%
Jitter, Cycle-to-Cycle
250
300
ps
Harmonic Reduction
f
out
= 40 MHz, third harmonic
measured, reference board,
15-pF load
8
dB
t
SK
Output to Output Skew
300
ps
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