SY89843UMG TR Micrel Inc, SY89843UMG TR Datasheet - Page 9

• Manufacturer Part Number: SY89843UMG TR
• Description: IC,ANALOG MUX,SINGLE,2-CHANNEL,LLCC,24PIN,PLASTIC
• Manufacturer: Micrel Inc
• Type: Multiplexerr
• Series: SY89r

Specifications of SY89843UMG TR

• Circuit: 1 x 2:1
• Independent Circuits: 1
• Voltage Supply Source: Single Supply
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-MLF®, QFN
• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: 2000MHz
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Package Type: MLF
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: CML/LVDS/PECL
• Mounting: Surface Mount
• Pin Count: 24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output High, Low: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SY89843UMGTR; SY89843UMGTR

May 2007
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), then the switchover will
occur in three stages.
Micrel, Inc.
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.
Timing Diagram 2
•
•
•
9
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
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SY89843U