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參數(shù)資料
| 型號： | C9851BT |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | TSSOP-48 |
| 文件頁數(shù)： | 13/13頁 |
| 文件大?。?/td> | 131K |
| 代理商： | C9851BT |
+/+
…when timing is critical
C9851
Clock Generator for Pentium
III Server and Workstation Applications
Preliminary
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
1.0
2/1/2000
MILPITAS, CA TEL 408-263-6300, FAX 408-263-6571
Page 9 of 13
http://www.imicorp.com
Buffer Characteristics
Current Mode CPU Clock Buffer Characteristics
The current mode output buffer detail and current reference circuit details are contained elsewhere in this datasheet.
The following parameters are used to specify output buffer characteristics:
1.
Output impedance of the current mode buffer circuit - Ro (see Figure 3).
2.
Minimum and maximum required voltage operation range of the circuit – Vop (see Figure 3).
3.
Series resistance in the buffer circuit – Ros (see Figure 3).
4.
Current accuracy at given configuration into nominal test load for given configuration.
Figure 3
Host Clock (HCSL) Buffer Characteristics
Characteristic
Minimum
Maximum
Ro
3000 Ohms (recommended)
N/A
Ros
Unspecified
Vout
N/A
1.2 Volt
Iout is selectable depending on implementation. The parameters above apply to all configurations. Vout is the voltage at
the pin of the device.
The various output current configurations are shown in the host swing select functions table. For all configurations, the
deviation from the expected output current is +/- 7% as shown in the table current accuracy (page 12).
1.2V
0V
Iout
Ros
Ro
VDD3 (3.3V +/- 5%)
Vout = 1.2V max
Vout
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