參數(shù)資料
型號: 853S314AGILFT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時鐘及定時
英文描述: 853S SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
封裝: 4.40 MM X 6.50 MM, 0.925 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-20
文件頁數(shù): 16/16頁
文件大?。?/td> 282K
代理商: 853S314AGILFT
IDT / ICS 3.3V, 2.5V LVPECL/ECL FANOUT BUFFER
9
ICS853S314AFI REV. A JANUARY 24, 2009
ICS853S314I
LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
TERMINATION FOR 2.5V LVPECL OUTPUT
Figure 2A and Figure 2B show examples of termination for 2.5V
LVPECL dr iver. These ter minations are equivalent to
terminating 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 2B can be eliminated and
the termination is shown in
Figure 2C.
FIGURE 2C. 2.5V LVPECL TERMINATION EXAMPLE
FIGURE 2B. 2.5V LVPECL DRIVER TERMINATION EXAMPLE
FIGURE 2A. 2.5V LVPECL DRIVER TERMINATION EXAMPLE
R2
62.5
Zo = 50 Ohm
R1
250
+
-
2.5V
2,5V LVPECL
Driv er
R4
62.5
R3
250
Zo = 50 Ohm
2.5V
VCC=2.5V
R1
50
R3
18
Zo = 50 Ohm
+
-
2,5V LVPECL
Driv er
VCC=2.5V
2.5V
R2
50
2,5V LVPECL
Driv er
VCC=2.5V
R1
50
R2
50
2.5V
Zo = 50 Ohm
+
-
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