SY89837UMI TR Micrel Inc, SY89837UMI TR Datasheet
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SY89837UMI TR
Specifications of SY89837UMI TR
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SY89837UMI TR Summary of contents
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Micrel, Inc. FEATURES ■ Selects between two clocks, and provides 8 precision, low skew LVPECL output copies ■ Guaranteed AC performance over temperature and supply voltage: ■ Wide operating frequency: 1kHz to >1.5GHz • <975ps in-to-out t pd • <180ps ...
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Micrel, Inc. TYPICAL APPLICATIONS CIRCUIT Figure 1. Simplified Example Illustrating Runt Pulse Eliminator (RPE) TRUTH TABLE Inputs IN0 /IN0 IN1 /IN1 M9999-060410 hbwhelp@micrel.com or (408) 955-1690 Circuit When Primary Clock Fails Outputs SEL Q ...
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Micrel, Inc. PACKAGE/ORDERING INFORMATION ® 32-Pin MLF (MLF-32) PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 3, IN0, /IN0, Differential Inputs: These input pairs are the differential signal inputs to the device. These inputs 6, 8 IN1, /IN1 accept AC- or DC-coupled signals as ...
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Micrel, Inc. DETAILED FUNCTIONAL DESCRIPTION RPE MUX and Fail-Safe Input The SY89837U is optimized for clock switchover applications where switching from one clock to another clock without runt pulses (short cycles) is required. It features two unique circuits: 1. Runt-Pulse Eliminator (RPE) Circuit The RPE MUX ...
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Micrel, Inc. 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 ...
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Micrel, Inc. Case #4 Input Clock Failure: Switching from the selected clock input stuck in an undetermined state to a valid clock input (RPE enabled). If the selected input clock fails to a floating, static, or extremely low signal swing, ...
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Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ....................................–0.5V to +4.0V CC Input Volage (V ) ............................................–0. LVPECL Output Current (I ) OUT ............................................................................. Continuous ...................................................................................... Surge (3) Termination Current ...................................... Source or sink current ...
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Micrel, Inc. LVPECL OUTPUTS DC ELECTRICAL CHARACTERISTICS V = +2.5V ±5% or +3.3V ±10 50Ω Symbol Parameter V Output HIGH Voltage Output LOW Voltage Output Voltage Swing OUT Q, ...
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Micrel, Inc. AC ELECTRICAL CHARACTERISTICS V = +2.5V ±5% or +3.3V ±10 –40°C to +85°C; unless noted Symbol Parameter f Maximum Operating Frequency MAX t Differential Propagation Delay pd t tempco Differential Propagation Delay pd ...
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Micrel, Inc. OPERATING CHARACTERISTICS Propagation Delay Variation vs. Input Rise/Fall Time 1000 t (max) pd 900 800 700 600 500 400 300 200 V = 200mV IN 100 0 0 100 200 300 INPUT RISE/FALL TIME (ps) Propagation Delay Variation ...
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Micrel, Inc. OPERATING CHARACTERISTICS (CONTINUED) M9999-060410 hbwhelp@micrel.com or (408) 955-1690 11 ® Precision Edge SY89837U ...
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Micrel, Inc. INPUT AND OUTPUT STAGES Figure 2a. Simplified Differential Input Stage INPUT INTERFACE APPLICATIONS Figure 3a. LVPECL Interface (DC-Coupled) Figure 3d. CML Interface (AC-Coupled) M9999-060410 hbwhelp@micrel.com or (408) 955-1690 Figure 2b. Simplified LVPECL Output Stage Figure 3b. LVPECL Interface (AC-Coupled) Figure 3e. LVDS Interface 12 ® Precision Edge SY89837U Option: may connect ...
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Micrel, Inc. LVPECL OUTPUT INTERFACE APPLICATIONS Figure 4a. Parallel Thevenin-Equivalent Termination RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function ® MLF Application Note HBW Solutions New Products and Applications M9999-060410 hbwhelp@micrel.com or (408) 955-1690 Figure 4b. Parallel Termination (3-Resistors) Data Sheet Link www.amkor.com/product/notes_papers/MLFAppNote.pdf www.micrel.com/product-info/products/solutions.shtml 13 ® Precision Edge SY89837U ...
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Micrel, Inc. ® 32-PIN MicroLeadFrame (MLF-32) Package Notes: 1. Package meets Level 2 Moisture Sensitivity Classification. 2. All parts are dry-packaged before shipment. 3. Exposed pads must be soldered to a ground for proper thermal management. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 tel The ...