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参数资料
| 型号： | IMISC464APB |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 80 MHz, PROC SPECIFIC CLOCK GENERATOR, PDIP28 |
| 封装： | PLASTIC, DIP-28 |
| 文件页数： | 4/8页 |
| 文件大小： | 77K |
| 代理商： | IMISC464APB |
SC464
Motherboard Clock Chip
Approved Product
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
Rev. 1.1
5/22/97
MILPITAS, CA 95035. TEL: 408-263-6300. FAX 408-263-6571
Page 4 of 8
OSCILLATOR CHARACTERISTICS
Characteristic
Symbol
Min
Typ
Max
Units
Conditions
Transconductance
gm
20
330
-
Millimhos
@14.3 MHz
Output Impedance
Zo
-
200
800
ohms
@14.3 MHz
Input Capacitance
Ci
8
13
18
pf
-
Output Capacitance
Co
3
6
9
pf
-
DC Bias Voltage
VB
1.5
VDD/2
3.5
Volt
-
Start-up Time
ts
-
10
ms
@14.3 MHz
Input Rise Time OSCIN
ICLKr
-
2
s
-
Input Fall Time OSCIN
ICLKf
-
2
s
-
VDD = 5V
±10%, TA = 0°C to 70°C
TIMING DIAGRAMS
Standard Mode
Changing Outputs
t:
Current cycle time
t1: Time to first positive edge after address change
t2: Ouput high time. t2 - 4 t
t3: Lock time. 2.0ms max
DOZE Mode
(MCLK2: Switching to 8 MHz, 16 MHz or 33.3 MHz
S0 - S2
MCLK2
Output
t3
t2
t1
t
DOZE #
MCLK2
Output
ST #
Lock Time
(2.0 mS max)
8, 16, or 33.3 MHz
Lock Time
(2.0 mS max)
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