参数资料
| 型号： | SY89467UHY |
| 厂商： | Micrel Inc |
| 文件页数： | 13/15页 |
| 文件大小： | 0K |
| 描述： | IC CLK BUFF MUX 2:20 2GHZ 64TQFP |
| 标准包装： | 160 |
| 系列： | Precision Edge® |
| 类型： | 扇出缓冲器（分配），多路复用器 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:20 |
| 差分 - 输入:输出： | 是/是 |
| 输入： | CML，LVDS，PECL |
| 输出： | LVPECL |
| 频率 - 最大： | 2GHz |
| 电源电压： | 2.375 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-TQFP 裸露焊盘 |
| 供应商设备封装： | 64-EP-TQFP |
| 包装： | 托盘 |
| 产品目录页面： | 1083 (CN2011-ZH PDF) |
| 其它名称： | 576-2085 SY89467UHY-ND |
Micrel, Inc.
SY89467U
April 2008
M9999-040808-C
hbwhelp@micrel.com or (408) 955-1690
7
Functional Description
Clock Select (SEL)
SEL is an asynchronous TTL/CMOS compatible input
that selects one of the two input signals. An internal
25k
pull-up resistor defaults the input to logic HIGH if
left open. Input switching threshold is VCC/2. Refer to
Figure 1a.
Fail-Safe Input (FSI)
The input includes a special failsafe circuit to sense
the amplitude of the input signal and to latch the
outputs when there is no input signal present, or when
the amplitude of the input signal drops sufficiently
below
100mVPK,
typically
30mVPK.
Maximum
frequency of the SY89467U is limited by the FSI
function. Refer to Figure 1b.
Input Clock Failure Case
If the input clock fails to a floating, static, or extremely
low signal swing such that the voltage across the input
pair is significantly less than 100mV, FSI function will
eliminate a metastable condition and latch the outputs
to the last valid state. No ringing and no undetermined
state will occur at the output under these conditions.
The output recovers to normal operation once the
input signal returns to a valid state with a typical swing
greater than 30mV.
Note that the FSI function will not prevent duty cycle
distortion in case of a slowly deteriorating (but still
toggling) input signal. Due to the FSI function, the
propagation delay will depend on the rise and fall time
of the input signal and on its amplitude.
Output Enable (OE)
OE is a synchronous TTL/CMOS compatible input that
enables/disables the outputs based upon the input to
this pin. The enable function is synchronous so that
the clock outputs will be enabled or disabled following
a rising and a falling edge of the input clock. Refer to
Figure 1c. Internal 25k
pull-up resistor defaults the
input to logic HIGH if left open. Input switching
threshold is VCC/2.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SY89467UHY TR | 功能描述:编码器、解码器、复用器和解复用器 1:20 LVPECL Fanout w/ 2:1 FSI Input MUX RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SY89468U | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Precision LVDS 1:20 Fanout with 2:1 MUX and Internal Termination with Fail-Safe Input |
| SY89468UHY | 功能描述:编码器、解码器、复用器和解复用器 1:20 LVDS Fanout w/ 2:1 FSI Input MUX RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SY89468UHY TR | 功能描述:编码器、解码器、复用器和解复用器 1:20 LVDS Fanout w/ 2:1 FSI Input MUX RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SY89468UHYTR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Precision LVDS 1:20 Fanout with 2:1 MUX and Internal Termination with Fail-Safe Input |
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