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參數(shù)資料
| 型號： | IMISC661BAB |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | PROC SPECIFIC CLOCK GENERATOR, PQFP52 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 287K |
| 代理商： | IMISC661BAB |
SC661
Clock Generator for 3 DIMM, USB and 2.5V Pentium
Design
Approved Product
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
Rev.1.7
5/19/98
MILPITAS, CA 95035. TEL: 408-263-6300. FAX 408-263-6571
Page 3 of 5
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Min
Typ
Max
Units
Conditions
Input Low Voltage
VIL
-
0.8
Vdc
-
Input High Voltage
VIH
2.0
-
Vdc
-
Input Low, or High Current
with Pull- up or Pull-down
IIL, IIH
7
-
70
A
S0-S2 Inputs
Output Low Voltage
VOL
-
0.4
Vdc
All Outputs
Output High Voltage
VOH
2.4
-
Vdc
All Outputs
Tri-State leakage Current
Ioz
-
10
A
All Outputs
Dynamic Supply Current
Icc
-
250
300
mA
CPU = 66.6 MHz, PCI = 33.3 Mhz
All Clocks Unloaded.
Static Supply Current
Icc (PD)
-
50
100
A
-
Short Circuit Current
ISC
25
-
mA
1 output at a time - 30 seconds
VDD = VDDCPU = VDDRM = 3.3V+5%, TA = 0C to +70C
TB4-M BUFFER SWITCHING CHARACTERISTICS (ALL OUTPUTS)
Characteristic
Symbol
Min
Typ
Max
Units
Conditions
Output Rise (0.4V - 2.0V)
and Fall (2.0V-0.4V) time
tTLH,
tTHL
-
1.6
ns
15 pf Load
CPU, SDRAM and PCI outputs
Output Duty Cycle
-
45
50
55
%
Measured at 1.5V
CPU to PCI Offset
tOFF
1
-
4
ns
15 pf Load Measured at 1.5V
Buffer out Skew All CPU,
SDRAM and PCI Buffer
Outputs
tSKEW
-
250
ps
15 pf Load Measured at 1.5V
Period Cycles, CPU
P
-
+250
ps
-
Jitter Absolute, CPU
tjab
-
500
ps
(Long term jitter measured over a 3
minute period)
VDD = VDDCPU = VDDRM = 3.3V+5%, TA = 0C to +70C
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