- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383869 > SY89825UHI (MICREL INC) 2.5/3.3V 1:22 HIGH-PERFORMANCE, LOW-VOLTAGE PECL BUS CLOCK DRIVER & TRANSLATOR w/ INTERNAL TERMINATION PDF資料下載
參數(shù)資料
| 型號： | SY89825UHI |
| 廠商： | MICREL INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 2.5/3.3V 1:22 HIGH-PERFORMANCE, LOW-VOLTAGE PECL BUS CLOCK DRIVER & TRANSLATOR w/ INTERNAL TERMINATION |
| 中文描述： | 89825 SERIES, LOW SKEW CLOCK DRIVER, 22 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64 |
| 封裝： | TQFP-64 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 59K |
| 代理商： | SY89825UHI |
7
ClockWorks
SY89825U
Micrel
LVPECL TERMINATION RECOMMENDATIONS
Output Considerations
Be sure to properly terminate all outputs as shown below, or
equivalent. For AC coupled applications
, be sure to include a pull
down resistor at the output of each driver. The emmiter follower
outputs requires a DC current path to GND. Unused outputs can be
left floating with minimal impact on skew and jitter.
R2
82
R2
82
Z
O
= 50
Z
O
= 50
+3.3V
+3.3V
Vt = V
CC
—
2V
R1
130
R1
130
+3.3V
Figure 1. Parallel Termination
–
Thevenin Equivalent
Notes:
1. For +2.5V systems:
R1 = 250
R2 = 62.5
Z = 50
Z = 50
50
50
46
to 49
+3.3V
+3.3V
“
source
”
“
destination
”
Rb
Figure 2. Three-Resistor
“
Y
–
Termination
”
Notes:
1. Power-saving alternative to Thevenin termination.
2. Place termination resistors as close to destination inputs as possible.
3. R
b
resistor sets the DC bias voltage equal to V
t
. For +3.3V systems R
b
= 46
to 49
.
4. Precision, low-cost 3-Resistor networks are available from resistor manufacturers such as Thin Film Technology (www.thinfilm.com).
相關PDF資料 |
PDF描述 |
|---|---|
| SY89825U | 2.5/3.3V 1:22 HIGH-PERFORMANCE, LOW-VOLTAGE PECL BUS CLOCK DRIVER & TRANSLATOR w/ INTERNAL TERMINATION |
| sy89833l | 3.3V, 2GHz ANY-DIFFERENTIAL INPUT-TO-LVDS 1:4 FANOUT BUFFER/TRANSLATOR W/ INTERNAL TERMINATION |
| SY89834U | 2.5V/3.3V TWO INPUT , 1GHz LVTTL/CMOS-TO-LVPECL 1:4 FANOUT BUFFER/TRANSLATOR |
| SY89834UMI | 2.5V/3.3V TWO INPUT , 1GHz LVTTL/CMOS-TO-LVPECL 1:4 FANOUT BUFFER/TRANSLATOR |
| SY89834UMITR | 2.5V/3.3V TWO INPUT , 1GHz LVTTL/CMOS-TO-LVPECL 1:4 FANOUT BUFFER/TRANSLATOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SY89825UHITR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:2.5/3.3V 1:22 HIGH-PERFORMANCE, LOW-VOLTAGE PECL BUS CLOCK DRIVER & TRANSLATOR w/ INTERNAL TERMINATION |
| SY89825UHY | 功能描述:轉換 - 電壓電平 3.3V 1:22 LVDS Fanout/Translator (I Temp, Lead Free) RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| SY89825UHY TR | 功能描述:轉換 - 電壓電平 3.3V 1:22 LVDS Fanout/Translator (I Temp, Lead Free) RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| SY89825UHYTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:2.5/3.3V 1:22 HIGH-PERFORMANCE, LOW-VOLTAGE PECL BUS CLOCK DRIVER & TRANSLATOR w/ INTERNAL TERMINATION |
| SY898265UHI | 制造商:Micrel Inc 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。