参数资料
| 型号： | SY89843UMG |
| 厂商： | Micrel Inc |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC MUX CML RPE 2:1 PREC 24-MLF |
| 标准包装： | 75 |
| 系列： | SY89 |
| 类型： | 多路复用器 |
| 电路： | 1 x 2:1 |
| 独立电路： | 1 |
| 电压电源： | 单电源 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘，24-MLF? |
| 供应商设备封装： | 24-MLF?（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1090 (CN2011-ZH PDF) |
| 其它名称： | 576-2097-5 SY89843UMG-ND |
Micrel, Inc.
SY89843U
Oct. 1, 2013
11
M9999-052207-B
hbwhelp@micrel.com or (408) 955-1690
Case #4 Input Clock Failure: Switching from the
selected clock input stuck in an undetermined state
to a valid clock input (RPE enabled).
If CLK1 fails to an undetermined state (e.g.,
amplitude falls below the 100mV (VIN) minimum
single-ended input limit, or 200mV differentially)
before the RPE MUX selects CLK2 (using the SEL
pin), the switchover to the valid clock CLK2 will
occur either following Case #2 or Case #3,
depending upon the last valid state at the CLK1.
If the selected input clock fails to a floating, static, or
extremely low signal swing, including 0mV, the FSI
function will eliminate any metastable condition and
guarantee a stable output signal. No ringing and no
undetermined state will occur at the output under
these conditions.
Please note that the FSI function will not prevent
duty cycle distortions or runt pulses in case of a
slowly deteriorating (but still toggling) input signal.
Due to the FSI function, the propagation delay will
depend on rise and fall time of the input signal and
on its amplitude. Refer to “Typical Operating
Characteristics” for more detailed information.
Timing Diagram 4
Power-On Reset (POR) Description
The SY89843U includes an internal power-on reset
(POR) function to ensure the RPE logic starts-up in
a known logic state once the power-supply voltage is
stable. An external capacitor connected between
VCC and the CAP pin (pin 16) controls the delay for
the power-on reset function.
Calculating the required capacitor value is based on
the time the system power supply needs to power up
to a minimum of 2.3V. The time constant for the
internal power-on-reset must be greater than the
time required for the power supply to ramp up to a
minimum of 2.3V.
The following equation describes this relationship:
As an example, if the time required for the system
power supply to power up past 2.3V is 12ms, the
required capacitor value on pin 16 would be:
C(
F)
≥
C(
F) ≥
C(
F) ≥
相关PDF资料 |
PDF描述 |
|---|---|
| SY89855UMG | IC MUX 4:1 LVPECL PREC LP 32-MLF |
| VI-J0N-MX-F3 | CONVERTER MOD DC/DC 18.5V 75W |
| ICL3222CP | IC TXRX RS-232 3-5.5V 18-PDIP |
| VI-J04-MX-F4 | CONVERTER MOD DC/DC 48V 75W |
| ICL232IPE | IC TXRX DUAL RS-232 5V 16-PDIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SY89843UMG TR | 功能描述:编码器、解码器、复用器和解复用器 Precision 2:1 LVPECL RPE & FSI MUX w/ 1:2 Fanout (I Temp, Green) 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 |
| SY89843UMGTR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Precision LVPECL Runt Pulse Eliminator 2:1 |
| SY89844U | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Precision LVDS Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination |
| SY89844U_10 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Precision LVDS Runt Pulse Eliminator 2:1 |
| SY89844UMG | 功能描述:编码器、解码器、复用器和解复用器 2.5V 2:1 RPE/FSI LVDS MUX w/ 1:2 Fanout (I Temp, Green) 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 |
发布紧急采购，3分钟左右您将得到回复。