SY89467U Product Brief Precision LVPECL 1:20 Fanout with 2:1 MUX and Internal Termination with Fail-Safe Input Description The SY89467U is a 2.5/3.3V, 1:20 LVPECL fanout buffer networks in the signal path. The outputs are 800mV, with a 2:1 differential input multiplexer (MUX). A unique LVPECL with fast rise/fall times guaranteed to be less than Fail-Safe Input (FSI) protection prevents metastable output 270ps. conditions when the selected input clock fails to a DC The SY89467U operates from a 2.5V ±5% or 3.3V ±10% voltage (when voltage between the pins of the differential supply and is guaranteed over the full industrial input drops significantly below 100mV). temperature range of –40°C to +85°C. The SY89467U is The differential input includes Micrel’s unique, 3-pin part of Micrel’s high-speed, Precision Edge® product line. internal termination architecture that can interface to any All datasheets and support documentation can be found differential signal (AC- or DC-coupled) as small as 100mV on Micrel’s web site at: www.micrel.com. (200mVPP) without any level shifting or termination resistor ___________________________________________________________________________________________________________ Block Diagram Precision Edge is a registered trademark of Micrel, Inc. [email protected] or (408) 955-1690 Micrel, Inc. TEL: +1 408.944.0800 FAX: + 1 408.474.1000 http://www.micrel.com Features Benefits Fail-Safe Input Prevents outputs from oscillating when input is invalid Ultra-low jitter design: – <1psRMS random jitter – <1psRMS cycle-to-cycle jitter – <10psPP total jitter (clock) – <0.7psRMS MUX crosstalk induced jitter Preserves signal integrity Unique, patented MUX input isolation design minimizes adjacent channel crosstalk Minimizes adjacent channel crosstalk Unique patented internal termination and VT pin accepts DCand AC-coupled inputs (CML, PECL, LVDS) Provides input interfacing flexibility, eliminates stubs, and improves signal integrity Applications Markets • Fail-safe clock protection • LAN/WAN • SONET clock distribute • Enterprise servers • Backplane distribution • 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 Central USA 2180 Fortune Dr. San Jose, CA 95131 USA (408) 944-0800 (408) 474-1000 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 M9999-051507