參數(shù)資料
型號: CMA8864-04
廠商: Electronic Theatre Controls, Inc.
英文描述: I2C, Mixed Voltage clock Synthesizer with Buffer for PENTIUMTM & II CPU/PCI system
中文描述: I2C和混合帶緩沖區(qū)PENTIUMTM電壓時鐘合成器
文件頁數(shù): 6/9頁
文件大?。?/td> 105K
代理商: CMA8864-04
CMEI 6 CMA8864-04
6F, No. 100, Sec. 4, Civil Boulevard, Taipei, Taiwan
TEL: (02)8773-1100 FAX: 886-2-8773-2211
WWW : http://www.cmedia.com.tw
Ver. 1.2
BUFFER SPECIFICATION
Buffer Name
CPU
IOAPIC
24/48MHz, REF1, 2
,REF0, SDRAM
PCI
Vcc Range (V)
2.375 - 2.9
2.375 - 2.9
3.315 - 3.465
3.315 - 3.465
3.315 - 3.465
Impedance (
15 - 45
10 - 30
20 -60
10 - 24
12 - 55
[
)
Buffer Type
1
2
3
4
5
Type 1 : CPU clock buffer Operating Characteristics
Symbol
Parameter
Iohmin
Pull-up Current
Iohmax
Pull-up Current
Iolmin
Pull-down Current
Iolmax
Pull-down Current
trh
2.5V Type 1 output
Rise Edge Rate
tfh
2.5V Type 1 output
Fall Edge Rate
Condition
Vout=1.0V
Vout=2.6V
Vout=1.2V
Vout=0.3V
2.5V @2.0V-0.4V
10pF load
2.5V @2.0V-0.4V
20pF load
Min.
-27
Max.
Units
mA
mA
mA
mA
V/ns
-27
27
27
4/1
1/1
1/1
4/1
V/ns
Type 2 : IOAPIC (2.5V) clock buffer Operating Characteristics
Symbol
Parameter
Iohmin
Pull-up Current
Iohmax
Pull-up Current
Iolmin
Pull-down Current
Iolmax
Pull-down Current
trh
2.5V Type 2 output
Rise Edge Rate
tfh
2.5V Type 2 output
Fall Edge Rate
Condition
Vout=1.4V
Vout=2.7V
Vout=1.0V
Vout=0.2V
2.5V @0.4V-2.0V
10pF load
2.5V @2.0V-0.4V
20pF load
Min.
-36
Max.
Units
mA
mA
mA
mA
V/ns
-29
36
28
4/1
1/1
1/1
4/1
V/ns
Type 3 : FD, USB, REF1, 2 (3.3V) clock buffer Operating Characteristics
Symbol
Parameter
Condition
Iohmin
Pull-up Current
Vout=1.0V
Iohmax
Pull-up Current
Vout=3.315V
Iolmin
Pull-down Current
Vout=1.95V
Iolmax
Pull-down Current
Vout=0.4V
trh
3.3V Type 3 output
Rise Edge Rate
10pF load
tfh
3.3V Type 3 output
Fall Edge Rate
20pF load
Min.
-29
Max.
Units
mA
mA
mA
mA
V/ns
-23
29
27
2.0
3.3V @0.4V-2.4V
0.5
3.3V @2.4V-0.4V
0.5
2.0
V/ns
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