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PDF SY58020U Data sheet ( Hoja de datos )
| Número de pieza | SY58020U | |
| Descripción | 1:4 CML Fanout Buffer/Translator | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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SY58020U
6GHz, 1:4 CML Fanout Buffer/Translator
with Internal I/O Termination
General Description
The SY58020U is a 2.5V/3.3V precision, high-speed, fully
differential 1:4 CML fanout buffer. Optimized to provide
four identical output copies with less than 15ps of skew
and 27fsRMS of typical additive phase jitter, the SY58020U
can process clock signals as fast as 6GHz.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that interfaces to differential
LVPECL, LVDS, and CML signals (AC- or DC-coupled) as
small as 100mV without any level-shifting or termination
resistor networks in the signal path. For AC-coupled input
interface applications, an on-board output reference
voltage (VREF-AC) is provided to bias the VT pin. The outputs
are optimized to drive 400mV typical swing into 50Ω loads,
with extremely fast rise/fall times guaranteed to be less
than 60ps.
The SY58020U operates from a 2.5V ±5% supply or 3.3V
±10% supply and is guaranteed over the full industrial
temperature range (–40°C to +85°C). For applications that
require LVPECL outputs, consider the SY58021U or
SY58022U 1:4 fanout buffer with 800mV and 400mV
output swing, respectively. The SY58020U is part of
Micrel’s high-speed, Precision Edge® product line.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• Precision 1:4, 400mV CML fanout buffer
• Guaranteed AC performance over temperature/voltage:
− > 6GHz fMAX clock
− < 60ps tr / tf times
− < 250ps tpd
− < 15ps max. skew
• Low-jitter performance:
− 27fsRMS typical additive phase jitter
• Accepts an input signal as low as 100mV
• Unique patented input termination and VT pin accepts
DC-coupled and AC-coupled differential inputs:
LVPECL, LVDS, and CML
• 50Ω source terminated CML outputs
• Power supply 2.5V ±5% and 3.3V ±10%
• Industrial temperature range: –40°C to +85°C
• Available in 16-pin (3mm x 3mm) QFN package
Applications
• All SONET and All GigE clock distribution
• Fibre Channel clock and data distribution
• Backplane distribution
• Data distribution: OC-48, OC-48+FEC, XAUI
• High-end, low skew, multiprocessor synchronous clock
distribution
Functional Block Diagram
Typical Performance
Precision Edge is a trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 27, 2014
Revision 5.0
[email protected] or (408) 955-1690
1 page  
Micrel, Inc.
Typical Operating Characteristics
VCC = 2.5V, GND = 0, VIN = 100mV, TA = 25°C, unless otherwise stated.
SY58020U
October 27, 2014
5 Revision 5.0
[email protected] or (408) 955-1690
5 Page 
Micrel, Inc.
SY58020U
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications
markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock
management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer transceiver ICs. Company
customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products.
Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and
advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network
of distributors and reps worldwide.
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2005 Micrel, Incorporated.
October 27, 2014
11 Revision 5.0
[email protected] or (408) 955-1690
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SY58020U.PDF ] | |
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