參數(shù)資料
型號: SY89845UMGTR
廠商: MICREL INC
元件分類: 通用總線功能
英文描述: PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION
中文描述: 89845 SERIES, 2 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, QCC24
封裝: 4 X 4 MM, LEAD FREE, MLF-24
文件頁數(shù): 9/18頁
文件大小: 608K
代理商: SY89845UMGTR
Micrel, Inc.
SY89845U
May 2005
M9999-052405
hbwhelp@micrel.com
or (408) 955-1690
9
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.
Timing Diagram 2
Note: 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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