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参数资料
| 型号： | 85301AKLFT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 85301 SERIES, LOW SKEW CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC16 |
| 封装： | 3 X 3 MM, 0.95 MM HEIGHT, ROHS COMPLIANT, MO-220, VFQFN-16 |
| 文件页数： | 3/20页 |
| 文件大小： | 725K |
| 代理商： | 85301AKLFT |
IDT / ICS 2:1, LVPECL MULTIPLEXER
11
ICS85301 REV. B DECEMBER 22, 2006
ICS85301
2:1, DIFFERENTIAL-TO-LVPECL MULTIPLEXER
EXPOSED PAD
Expose Metal Pad
(GROUND PAD)
GROUND PLANE
SOLDER
SIGNAL
TRACE
SIGNAL
TRACE
THERM AL VIA
SOLDER M ASK
FIGURE 5. P.C. BOARD FOR EXPOSED PAD THERMAL RELEASE PATH EXAMPLE
THERMAL RELEASE PATH
The expose metal pad provides heat transfer from the device to
the P.C. board. The expose metal pad is ground pad connected
to ground plane through thermal via. The exposed pad on the
device to the exposed metal pad on the PCB is contacted through
solder as shown in
Figure 5. For further information, please refer
to the Application Note on Surface Mount Assembly of Amkor’s
Thermally /Electrically Enhance Leadframe Base Package, Amkor
Technology.
TERMINATION FOR 2.5V LVPECL OUTPUT
Figure 4A and Figure 4B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating
50
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.
FIGURE 4C. 2.5V LVPECL TERMINATION EXAMPLE
FIGURE 4B. 2.5V LVPECL DRIVER TERMINATION EXAMPLE
FIGURE 4A. 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
+
-
相关PDF资料 |
PDF描述 |
|---|---|
| 85301AGLFT | 85301 SERIES, LOW SKEW CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO16 |
| 80.000MHZHC49/T/50/30/20/50PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
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| 80.000MHZHC49/3/5/10/30PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
| 80.000MHZHC49/3W/3/20/10/50PF/AT5 | QUARTZ CRYSTAL RESONATOR, 80 MHz |
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