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SY58621L Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY58621L Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 19 page SY58621L Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback Precision Edge is a registered trademark of Micrel, Inc. MLF and MicroLeadFrame are trademarks of Amkor Technology, 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 January 2006 M9999-012006-B hbwhelp@micrel.com or (408) 955-1690 General Description The SY58621L is a low jitter, high-speed transceiver with a variable swing LVPECL transmitter buffer and a CML high-gain receiver optimized for precision telecom and enterprise server transmission line and backplane data management. The SY58621L distributes data to 3.2Gbps guaranteed over temperature and voltage. The SY58621L transmitter differential input includes Micrel’s unique, patented 3-pin input termination architecture that directly interfaces to any (AC- or DC- coupled) differential signal as small as 100mV (200mVPP) without any termination resistor network in the signal path. The receiver differential input is optimized to interface directly to AC-coupled signals as small as 10mV (20mVPP). The receiver output is 50_ source-terminated CML and the transmitter output is variable swing 80mV to 800mV LVPECL with extremely fast rise/fall time. To support remote self-testing, the SY58621L features a high-speed loopback test mode. The input control signal LOOPBACK enables an internal loopback path from the transmitter input to the receiver output. The SY58621L operates from a 3.3V ±10% supply and is guaranteed over the full industrial temperature range of –40°C to +85°C. The SY58621L is part of Micrel’s high-speed, Precision Edge ® product line. For applications that requires a CML receiver and transmitter, consider the SY58620L. All support documentation can be found on Micrel’s web site at: www.micrel.com. Applications • Backplane management • Active cable transceivers • SONET/SDH data/clock applications • 4X Fibre Channel applications Precision Edge ® Features • Guaranteed AC performance over temperature and voltage: - Maximum Throughput 3.2Gbps - <160ps tr/tf time • Transmitter - Patented input termination directly interfaces to AC- or DC-coupled differential inputs - Variable swing LVPECL output • Receiver - 32dB high-gain Input - Internal 50 Ω input termination - Accepts AC-coupled input signals as small as 10mV (20mvPP) - 400mV (800mVPP) differential CML output swing • Loss-of-Signal (LOS) - High-gain, TTL-compatible LOS output with internal 4.75k Ω pull-up - Programmable LOS level set • Ultra-low jitter design - <5psRMS random jitter • Patent-pending MUX isolates the receiver and the transmitter channels minimizing on crosstalk • Selectable loopback diagnostic mode • Output enables on transmitter and receiver outputs • Power supply +3.3V ±10% • Industrial temperature range -40°C to +85°C • Available in 24-pin (4mm x 4mm) MLF™ Markets • Precision telecom • Enterprise server • ATE • Test and measurement |
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