SY89425 Micrel Semiconductor, SY89425 Datasheet
SY89425
Related parts for SY89425
SY89425 Summary of contents
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... PLL A may operate from an STS-1 reference of 51.84MHz, while PLL B operates from an OC-3/STS-3 reference of 77.76MHz). The SY89425 operates from a single +5 volt supply, and requires only a simple series RC loop filter for each PLL. Coupling Micrel-Synergy's advanced PLL technology with our proprietary ASSET™ bipolar process has produced ...
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... SEL39B (TTL) RFCKB (TTL) GND FLTRAP/N V CCA 2 3 CHG /f PUMP FEEDBACK DIVIDER (8/12/16) FEEDBACK DIVIDER (8/12/16) CHG /f PUMP 3 2 GND FLTRBP/N V CCB 2 ClockWorks™ V CCOA RSTA (TTL) 622MHz VCO CK622AP (PECL) CK622AN PLL A PLL B CK622BP (PECL) CK622BN 622MHz VCO RSTB (TTL) V CCOB SY89425 ...
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... CCB V +5V for PLL A PECL outputs. CCOA V +5V for PLL B PECL outputs. CCOB GND Ground (0 volts) REFERENCE FREQUENCY SELECTION SEL39 (1) Parameter –Continuous –Surge 3 ClockWorks™ SY89425 Differential PECL SEL78 fRFCK 0 51.84 1 77.76 0 38.88 1 77.76 Rating Unit ...
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... Condition –2mA 4mA OUT — — V — Max. Unit Condition 204 mA Both PLLs powered — Vcc -2, 50% duty cycle ( 1.33V. OL(MIN) ClockWorks™ SY89425 Max. Unit V mV -670 -1545 -720 -1445 CC — ...
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... UI — — 15 sec — — — — 500 ps 45 — — — sec — –0.7 — 622 5 ClockWorks™ SY89425 Condition Nominal 77.76MHz 51.84MHz 38.88MHz 10% to 90% of amplitude, 15pF load 10% to 90%, 50 load, 5pF cap ...
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... The low-pass cutoff frequency of the measurement filter shall be higher than 5MHz. The characteristic of the measurement filter is shown below. Filter Characteristics 12kHz Frequency Figure 1 Operating Range Commercial Commercial 6 ClockWorks™ SY89425 5MHz (minimum) ...
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... Micrel 28 LEAD PLCC (J28-1) 7 ClockWorks™ SY89425 Rev. 03 ...
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... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc (408) 914-7878 http://www.micrel.com FAX WEB © 2000 Micrel Incorporated 8 ClockWorks™ SY89425 ...