sy89425jctr Micrel Semiconductor, sy89425jctr Datasheet
sy89425jctr
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sy89425jctr Summary of contents
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FEATURES Two independently-powered 622.08MHz clock sources one chip Differential PECL outputs TTL/CMOS compatible inputs SONET compliant jitter performance ( 0.01UI) Choice of three reference frequencies for each PLL Only 395mW per PLL (typ) Complies with Bellcore, CCITT and ANSI standards ...
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Micrel FUNCTIONAL BLOCK DIAGRAM RFCKA (TTL) SEL39A (TTL) SEL78A (TTL) SEL78B (TTL) 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 ...
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Micrel PIN DESCRIPTION INPUTS RFCKB [Reference Clock B] TTL Reference clock in for PLL B. (38.88, 51.84 or 77.76MHz). SEL39B [38.88MHz Select B] TTL Logic HIGH on this pin denotes a 38.88MHz input reference clock for PLL B. Tie to ...
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Micrel PECL DC ELECTRICAL CHARACTERISTIC +5V CCA CCB CCOA CCOB Symbol Parameter V Output HIGH Voltage OH V Output LOW Voltage OL (1) V Input HIGH Voltage IH (1) V Input LOW Voltage ...
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Micrel AC ELECTRICAL CHARACTERISTICS +5V 5%; GND = 0V; T CCA CCB CCOA CCOB Parameter VCO Center Frequency Reference Clock (RFCK) Frequency Tolerance Reference Clock (RFCK) Input Duty Cycle Acquisition Lock Time TTL ...
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... PRODUCT ORDERING CODE Ordering Package Code Type SY89425JC J28-1 SY89425JCTR J28-1 Jitter Generation Requirement Bellcore TA-NWT-000253 (Issue 2), section 5.6.5.2 "For Category II interfaces, jitter generation shall not exceed 0.01 UI rms. For OC-N and STSX-N interfaces, a high-pass measurement filter with a 12kHz cutoff frequency shall be used." The low-pass cutoff frequency of the measurement filter shall be higher than 5MHz ...
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Micrel 28 LEAD PLCC (J28-1) 7 ClockWorks™ SY89425 Rev. 03 ...
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Micrel MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA + 1 (408) 980-9191 TEL 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 ...