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參數(shù)資料
| 型號： | C9914BY |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 150 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28 |
| 封裝： | SSOP-28 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 131K |
| 代理商： | C9914BY |
Clock Generator for 100MHz and 133.3MHz Mobile Applications
Cypress Semiconductor Corporation
525 Los Coches St.
Document#: 38-07069 Rev. **
5/4/2001
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
Page 8 of 14
http://www.cypress.com
PRELIMINARY
C9914
AC Switching Characteristics
Characteristic
Symbol
Min
Typ
Max
Units
Conditions
Output Duty Cycle
-
45
50
55
%
CPU= Measured at 1.25V
all others measured at 1.50V
CPU to PCI Offset
(CPU leads)
tOFF
1.5
-
4
ns
CPU=20 pF load Measured at 1.25V
PCI=30 pF load Measure at 1.50V
Period Adjacent Cycles
P
--
±500
pS
PCI Only
VDD = VDDF = VDDP =VDDR =3.3V
±5%, VDDC = 2.5V ±5%, TA = 0C to +70C
AC Skew Requirements
Characteristic
Bank Skew
Cycle to Cycle Jitters
VDD
Skew, Jitters Measure Point
CPU (20pF)
175pS
250pS
2.5V
1.25V
48 MHz
n/a
500pS
3.3V
1.5V
PCI, PCI_F (30pF)
500pS
3.3V
1.5V
REF
n/a
500pS
3.3V
1.5V
Buffer Characteristics
Buffer Characteristics for CPU Outputs
Characteristic
Symbol
Min
Typ
Max
Units
Conditions
Pull-Up Current Min
IOHmin
-27
-
mA
Vout = 1.0 V
Pull-Up Current Max
IOHmax
-27
mA
Vout = 2.375 V
Pull-Down Current Min
IOLmin
27
-
mA
Vout = 1.2 V
Pull-Down Current Max
IOLmax
-
30
mA
Vout = 0.3 V
Rise Time
Between 0.4 V and 2.0 V
TR
0.4
-
1.6
nS
20 pF Load
Fall Time
Between 0.4 V and 2.0 V
TF
0.5
-
1.6
nS
20 pF Load
VDD = VDDF = VDDP = VDDR =3.3V
±5%, VDDC = 2.5V ±5%, TA = 0C to +70C
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