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SY56020R_10 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – Low Voltage 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer 6.4Gbps with Equalization | |||
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SY56020R
Low Voltage 1.2V/1.8V/2.5V CML 1:4
Fanout Buffer 6.4Gbps with Equalization
General Description
The SY56020R is a fully-differential, low-voltage
1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with input
equalization. The SY56020R can process clock signals
as fast as 4.5GHz or data patterns up to 6.4Gbps.
The differential input includes Micrelâs unique, 3-pin input
termination architecture that interfaces to CML
differential signals, without any level-shifting or
termination resistor networks in the signal path. The
differential input can also accept AC-coupled LVPECL
and LVDS signals. Input voltages as small as 200mV
(400mVpp) are applied before the 9â, 18â or 27â FR4
transmission line. For AC-coupled input interface
applications, an internal voltage reference is provided to
bias the VT pin. The outputs are CML, with extremely
fast rise/fall times guaranteed to be less than 90ps.
The SY56020R operates from a 2.5V ±5% core supply
and a 1.2V, 1.8V or 2.5V ±5% output supply and is
guaranteed over the full industrial temperature range
(â40°C to +85°C). The SY56020R is part of Micrelâs
high-speed, Precision Edge® product line.
Datasheets and support documentation can be found on
Micrelâs web site at: www.micrel.com.
Functional Block Diagram
Features
Precision Edge®
⢠1.2V/1.8V/2.5V CML 1:4 Fanout Buffer
⢠Equalizes 9, 18, 27 inches of FR4
⢠Guaranteed AC performance over temperature and
voltage:
â DC-to > 6.4Gbps Data throughput
â DC-to > 4.5GHz Clock throughput
â <280 ps propagation delay (IN-to-Q)
â <15ps within-device skew
â <90ps rise/fall times
⢠Ultra-low jitter design
â <1psRMS random jitter
⢠High-speed CML outputs
⢠2.5V ±5% VCC , 1.2/1.8V/2.5V ±5% VCCO power supply
operation
⢠Industrial temperature range: â40°C to +85°C
⢠Available in 16-pin (3mm x 3mm) QFN package
Applications
⢠Data distribution
⢠SONET clock and data distribution
⢠Fiber Channel clock and data distribution
⢠Gigabit Ethernet clock and data distribution
Markets
⢠Storage
⢠ATE
⢠Test and measurement
⢠Enterprise networking equipment
⢠High-end servers
⢠Metro area network equipment
Precision Edge is a registered 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
November 2010
M9999-111810-A
hbwhelp@micrel.com or (408) 955-1690
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