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参数资料
| 型号： | SY89829UHG |
| 厂商： | MICREL INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 89829 SERIES, LOW SKEW CLOCK DRIVER, 20 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64 |
| 封装： | LEAD FREE, TQFP-64 |
| 文件页数： | 10/10页 |
| 文件大小： | 113K |
| 代理商： | SY89829UHG |
9
Precision Edge
SY89829U
Micrel, Inc.
M9999-120205
hbwhelp@micrel.com or (408) 955-1690
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
ZO = 50
+3.3V
Vt = VCC —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
50
46 to 49
+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. Rb resistor sets the DC bias voltage equal to Vt. For +3.3V systems Rb = 46 to 50.
4. Precision, low-cost 3-Resistor networks are available from resistor manufacturers such as Thin Film Technology (www.thinfilm.com).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SY89829UHI | 功能描述:IC CLOCK BUFFER MUX 2:10 64-TQFP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:Precision Edge® 标准包装:1 系列:HiPerClockS™ 类型:扇出缓冲器（分配），多路复用器 电路数:1 比率 - 输入:输出:2:18 差分 - 输入:输出:是/无 输入:CML，LVCMOS，LVPECL，LVTTL，SSTL 输出:LVCMOS，LVTTL 频率 - 最大:250MHz 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:- 其它名称:800-1923-6 |
| SY89829UHITR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2.5V/3.3V HIGH-PERFORMANCE, DUAL 1:10 OR LVPECL CLOCK DRIVER w/ INTERNAL TERMINATION AND REDUNDANT SWITCHOVER |
| SY89829UHY | 功能描述:转换 - 电压电平 2.5/3.3V Dual 1:10LVPECL Fanout/Translator (I Temp, Lead Free) RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| SY89829UHY TR | 功能描述:转换 - 电压电平 2.5/3.3V Dual 1:10LVPECL Fanout/Translator (I Temp, Lead Free) RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| SY89829UHYTR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2.5V/3.3V HIGH-PERFORMANCE, DUAL 1:10 OR LVPECL CLOCK DRIVER w/ INTERNAL TERMINATION AND REDUNDANT SWITCHOVER |
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