參數(shù)資料
型號: ICS85211AMILF
元件分類: 時鐘及定時
英文描述: LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
封裝: 3.90 X 4.90 MM, 1.37 MM HEIGHT, SOIC-8
文件頁數(shù): 8/12頁
文件大?。?/td> 133K
代理商: ICS85211AMILF
85211AMI
www.icst.com/products/hiperclocks.html
REV. B ARPIL 8, 2003
5
Integrated
Circuit
Systems, Inc.
ICS85211I
LOW SKEW, 1-TO-2
DIFFERENTIAL-TO-LVHSTL FANOUT BUFFER
SCHEMATIC EXAMPLE
Figure 2 shows a schematic example of ICS85211I. In this
example, the input is driven by an ICS HiPerClockS LVHSTL
driver. The decoupling capacitors should be physically located
FIGURE 2. ICS85211I LVHSTL BUFFER SCHEMATIC EXAMPLE
near the power pin. For ICS85211I, the unused outputs need
to be terminated.
APPLICATION INFORMATION
Figure 1 shows how the differential input can be wired to accept
single ended levels. The reference voltage V_REF = V
DD/2 is
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The ratio
FIGURE 1. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT
of R1 and R2 might need to be adjusted to position the V_REF in
the center of the input voltage swing. For example, if the input
clock swing is only 2.5V and V
DD = 3.3V, V_REF should be 1.25V
and R2/R1 = 0.609.
WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS
VDD=3.3V
ICS
Unused
Output
Need To
Be
Terminated
Zo = 50 Ohm
R4
50
Zo = 50 Ohm
C1
0.1u
1.8V
R1
50
HiPerClockS
LVHSTL Input
+
-
Zo = 50 Ohm
LVHSTL
R5
50
Zo = 50 Ohm
LVHSTL Driv er
R2
50
R6
50
R3
50
U1
ICS85211
1
2
3
4
8
7
6
5
Q0
nQ0
Q1
nQ1
VDD
CLK
nCLK
GND
V_REF
R1
1K
C1
0.1u
R2
1K
Single Ended Clock Input
CLK
nCLK
VDD
相關(guān)PDF資料
PDF描述
ICS85211AMIT 85211 SERIES, LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS85211AMT LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS85211AMLF LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS85211AM LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS85211BMI-03LN 85211 SERIES, LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
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