參數(shù)資料
型號(hào)： SY89837UMY
廠商： MICREL INC
元件分類： 時(shí)鐘及定時(shí)
英文描述： 89837 SERIES, LOW SKEW CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC32
封裝： 5 X 5 MM, MLF-32
文件頁(yè)數(shù)： 10/14頁(yè)
文件大小： 587K
代理商： SY89837UMY
5
Precision Edge
SY89837U
Micrel, Inc.
M9999-121605
hbwhelp@micrel.com or (408) 955-1690
Case #2 Input Clock Failure: Switching from a selected clock
stuck HIGH to a valid clock (RPE enabled).
If CLK1 fails HIGH before the RPE MUX selects CLK2
(using the SEL pin), the switchover will occur in three stages:
Stage 1: The output will remain HIGH for a
limited number of pulses of CLK2.
Stage 2: The output will switch to LOW and then
remain LOW for a limited number of falling edges
of CLK2.
Stage 3: The output will follow CLK2.
Case #3 Input Clock Failure: Switching from a selected clock
stuck LOW to a valid clock (RPE enabled).
If CLK1 fails LOW before the RPE MUX selects CLK2
(using the SEL pin), the switchover will occur in two stages.
Stage 1: The output will remain LOW for a
limited number of falling edges of CLK2.
Stage 2: The output will follow CLK2.
CLK1
CLK2
SEL
OUTPUT
Select CLK1
Stage 1
Stage 2
Stage 3
Select CLK2
14 to 16 falling edges of CLK2
Runt pulse eliminated
from output
Figure 3. Timing Diagram 2(1)
CLK1
CLK2
SEL
OUTPUT
Select CLK1
Stage 1
Stage 2
Select CLK2
13 to 17 falling edges of CLK2
Figure 4. Timing Diagram 3
Note:
1. Output shows extended clock cycle during switchover. Pulse width for both high and low of this cycle will always be greater than 50% of the CLK2
period.
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參數(shù)描述
SY89838U 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 1:8 LVDS Clock Fanout Buffer with 2:1 Runt Pulse Eliminator Input MUX
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SY89838UMG TR 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Ultra-low Jitter 1:8 Any-In to LVDS Fanout with 2:1 RPE/FSI Input MUX with Internal Termination RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
SY89838UMGTR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 1:8 LVDS Clock Fanout Buffer with 2:1 Runt Pulse Eliminator Input MUX
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