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參數(shù)資料
| 型號(hào)： | 83905AIL |
| 英文描述： | LOW SKEW, 1:6 CRYSTAL INTERFACE-TO LVCMOS/LVTTL FANOUT BUFFER |
| 中文描述： | 低偏移，1:6晶體界面對(duì)的LVCMOS / LVTTL扇出緩沖器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 219K |
| 代理商： | 83905AIL |
83905AGI
http://www.icst.com/products/hiperclocks.html
REV. B MAY 16, 2005
12
Integrated
Circuit
Systems, Inc.
ICS83905I
L
OW
S
KEW
, 1:6 C
RYSTAL
I
NTERFACE
-
TO
-
LVCMOS / LVTTL F
ANOUT
B
UFFER
L
AYOUT
G
UIDELINE
Figure 2 shows an example of ICS83905I application schematic.
In this example, the device is operated at V
= 3.3V and V
=
3.3V. The decoupling capacitors should be located as close as
possible to the power pins. The input is driven by an 18pF load
resonant quartz crystal. The tuning capacitors (C1, C2) are fairly
accurate, but minor adjustments might be required. For the
LVCMOS output drivers, two termination examples are shown
in the schematic. For additional termination, examples are shown
in the LVCMOS Termination Application Note.
F
IGURE
2. Schematic of Recommended Layout
VDD
R2
31
C6
VDDO
ENABLE 2
R4
100
Zo = 50 Ohm
VDD = 3.3V
C2
15pf
VDD
C1
15pF
LVCMOS
ENABLE 1
CL = 18 pf
Optional Termination
R3
C4
LVCMOS
Zo = 50 Ohm
VDDO
U1
ICS83905I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
XTAL_OUT
ENABLE 2
BCLK0
VDDO
BCLK1
BCLK2
VDD
BGND
BCLK4
ENVDDO
XTAL_IN
C3
VDDO = 3.3V
Unused outputs can be left floating. There should be
no trace attached to unused outputs. Device
characterized and specification limits set with all
outputs terminated.
C5
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| 83905AK | 制造商:Integrated Device Technology Inc 功能描述:PLL CLOCK BFFR SGL 20PIN VFQFN-N - Rail/Tube |
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| 83905AKLFT | 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 Low Skew 1:5 Fanout Buffer RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
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