参数资料
型号: ICS8533AG-11LFT
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟及定时
英文描述: 8533 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
封装: 6.50 X 4.40 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MS-153, TSSOP-20
文件页数: 16/16页
文件大小: 429K
代理商: ICS8533AG-11LFT
8533AG-11
www.icst.com/products/hiperclocks.html
REV. E DECEMBER 14, 2004
9
Integrated
Circuit
Systems, Inc.
ICS8533-11
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
SCHEMATIC EXAMPLE
Figure 6 shows a schematic example of the ICS8533-11. In this
example, the XTAL input is selected. The decoupling capacitors
should be physically located near the power pin. For ICS8533-11,
the unused clock outputs can be left floating.
FIGURE 6. ICS8533-11 LVPECL BUFFER SCHEMATIC EXAMPLE
X1
C3
0.1u
R9
50
R8
50
U1
ICS8533-11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
19
18
17
VEE
CLK_EN
CLK_SEL
CLK
nCLK
XTAL1
XTAL2
NC
VCC
nQ3
Q3
VCC
nQ2
Q2
nQ1
Q0
nQ0
VCC
Q1
R2
50
3.3V
R12
1K
3.3V
C2
0.1u
+
-
3.3V
Zo = 50
R11
1K
R1
50
Zo = 50
C4
40p - 60pF
R3
50
C1
0.1u
R7
50
+
-
C5
SPARE
3.3V
CRYSTAL INPUT INTERFACE
A crystal can be characterized for either series or parallel
mode operation. The ICS8533-11 fanout buffer has a built-in
crystal oscillator circuit. This interface can accept either a
series or parallel crystal without additional components as
shown in
Figure 5. The physical location of the crystal should
be located as close as possible to the XTAL1 and XTAL2 pins.
The experiments show that using a 19.44MHz crystal results
in an output frequency of 19.4404746MHz and approximately
44% of duty cycle.
C1
40p
XTAL2
XTAL1
C2
SPARE
X1
Cry stal
FIGURE 5. CRYSTAL INPUT INTERFACE
ICS8533-11
LOW SKEW, 1-TO-4 CRYSTAL OSCILLATOR/DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
TSD
IDT / ICS LOW SKEW, 1-TO-4 CRYSTAL OSCILLATOR/DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
ICS8533-11
9
相关PDF资料
PDF描述
ICS8533AG-11LF 8533 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS8534AY-01T 8534 SERIES, LOW SKEW CLOCK DRIVER, 22 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64
ICS8534AY-01LF 8534 SERIES, LOW SKEW CLOCK DRIVER, 22 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64
ICS8534BMI-13LFT 266 MHz, OTHER CLOCK GENERATOR, PDSO16
ICS8534BMI-13T 266 MHz, OTHER CLOCK GENERATOR, PDSO16
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