SY89202U Product Brief Precision 1:8 LVPECL Fanout Buffer with Three ÷1/÷2/÷4 Clock Divider Output Banks Description The SY89202U is a precision, high-speed, integrated clock The EN (enable) input guarantees that the ÷1, ÷2 and ÷4 divider LVPECL fanout buffer capable of handling clocks outputs will start from the same state without any runt up to 1.5GHz. Optimized for communications applications, pulse after an asynchronous MR (master reset) is the three independently controlled output banks are phase asserted. This is accomplished by enabling the outputs matched and can be configured for pass-through (÷1), ÷2 after a four-clock delay to allow the counters or ÷4 divide ratios. to synchronize. ® The differential input includes Micrel’s unique, 3-pin input The SY89202U is part of Micrel’s Precision Edge termination architecture that allows the user to interface to product family. any AC- or DC-coupled signal as small as 100mV All support documentation can be found at Micrel’s web (200mVPP) without any level shifting or termination resistor site at: www.micrel.com. networks in the signal path. The low skew, low jitter outputs are 800mV, 100k compatible LVPECL, with extremely fast rise/fall times guaranteed to be less than 220ps. ___________________________________________________________________________________________________________ Block Diagram Precision Edge is a registered trademark of Micrel, Inc. MLF is a registered trademark of Amkor Technology. [email protected] or (408) 955-1690 Micrel, Inc. TEL: +1 408.944.0800 FAX: + 1 408.474.1000 http://www.micrel.com Features Benefits Three independently programmable output banks Provides maximum system flexibility Ultra-low jitter design: – <1psRMS random jitter (RJ) – <10psPP total jitter (clock) Preserve signal integrity, minimizes Bit Error Rate (BER) Patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS) Eliminates stubs, improves signal integrity, simplifies design ® Available in 32-pin MLF package Saves board space, reduces cost Applications Markets • All SONET/SDH channel select applications • All Fibre Channel multi-channel select applications • All Gigabit Ethernet multi-channel select Applications • LAN/WAN • Enterprise servers • ATE • Test and measurement Corporate Sales Offices Location Address Telephone Fax Corporate HQ 2180 Fortune Dr. San Jose, CA 95131 USA (408) 944-0800 (408) 474-1000 Western USA 2180 Fortune Dr. San Jose, CA 95131 USA (408) 944-0800 (408) 474-1000 Central USA 2425 N. Central Expressway, Suite 351 Richardson, TX 57080 USA (972) 393-2533 (408) 474-1210 Eastern USA 93 Branch St. Medford, NJ 08055 USA (609) 654-0078 (609) 654-0989 Latin America 2425 N. Central Expressway, Suite 351 Richardson, TX 57080 USA (972) 393-2533 (408) 474-1210 China Rm 601, Bldg., Int’l Chamber of Commerce Mansion, Fuhua Rd., Futian District Shenzhen, P.R. China +86-755-8302-7618 +86-755-8302-7637 Japan Queen’s Tower A 14F, 2-3-1, Minato Mirai, Nishi-Ku, Yokohama-Shi Kanagawa 220-6014, Japan +81-45-224-6616 +81-45-224-6716 Korea 8F AnnJay Tower Bldg., 718-2, Yeoksam-Dong Kangnam-Ku, Seoul 135-080 Korea 82 (2) 538-2380 82 (2) 538-2381 New Zealand Office2, CML Bldg., 2 Perry St. Masterton, New Zealand +64-6-378-9799 +64-6-378-9599 Singapore/India 300 Beach Rd., #10-07 Concourse Singapore 199555 +65-6291-1318 +65-6291-1332 Taiwan 4F, No. 18 Lane 321, Yang-Guang St., Nei-Hu Chu Taipei 11468, Taiwan, R.O.C. +866 (2) 8751-0600 +866 (2) 8751-0746 France/Southern Europe 10 Avenue du Quebec, Villebon – B.P. 116 91944 Courtaboeuf Cedex, France +33 (0) 1.6092.4190 +33 (0) 1.6092.4189 UK/EMEA 1st Floor, 3 Lockside Place, Mill Lane, Newbury, Berks United Kingdom RG14 5QS +44 (1635) 524455` +44 (1635) 524466 Sweden/Nordic Lundagatan 11 6tr SE-171 63 Solna Sweden +46 (8) 470-5950 +46 (8) 470-5950 Micrel, Inc. TEL: +1 408.944.0800 FAX: + 1 408.474.1000 http://www.micrel.com M9999-080806