參數(shù)資料
型號(hào): 853054AG
英文描述: 4:1, DIFFERENTIAL-TO-3.3V OR 2.5V LVPECL/ECL CLOCK MULTIPLEXER
中文描述: 4:1,差分至3.3V或2.5V的LVPECL / ECL時(shí)鐘復(fù)用器
文件頁數(shù): 10/15頁
文件大?。?/td> 207K
代理商: 853054AG
Integrated
Circuit
Systems, Inc.
853054AG
www.icst.com/products/hiperclocks.html
REV. A JANUARY 5, 2006
10
ICS853054
4:1, D
IFFERENTIAL
-
TO
-3.3V
OR
2.5V
LVPECL/ECL C
LOCK
M
ULTIPLEXER
PRELIMINARY
T
ERMINATION
FOR
2.5V LVPECL O
UTPUT
Figure 4A
and
Figure 4B
show examples of termination for
2.5V LVPECL driver. These terminations are equivalent to ter-
minating 50
Ω
to V
CC
- 2V. For V
CC
= 2.5V, the V
CC
- 2V is very
close to ground level. The R3 in Figure 4B can be eliminated
and the termination is shown in
Figure 4C.
F
IGURE
4C. 2.5V LVPECL T
ERMINATION
E
XAMPLE
F
IGURE
4B. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
F
IGURE
4A. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
R2
62.5
Zo = 50 Ohm
R1
250
+
-
2.5V
2,5V LVPECL
Driver
R4
62.5
R3
250
Zo = 50 Ohm
2.5V
VCC=2.5V
R1
50
R3
18
Zo = 50 Ohm
Zo = 50 Ohm
+
-
2,5V LVPECL
Driver
VCC=2.5V
2.5V
R2
50
2,5V LVPECL
Driver
VCC=2.5V
R1
50
R2
50
2.5V
Zo = 50 Ohm
Zo = 50 Ohm
+
-
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