SY56028XR_1009 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – Low Voltage 1.2V/1.8V/2.5V CML 4:1 MUX with 1:2 FANOUT 6.4Gbps with EQUALIZATION

SY56028XR
Low Voltage 1.2V/1.8V/2.5V CML
4:1 MUX with 1:2 FANOUT
6.4Gbps with EQUALIZATION
.
General Description
The SY56028XR is a fully differential, low voltage
1.2V/1.8V/2.5V CML 4:1 MUX, with input equalization,
and integrated 1:2 Fanout Buffer. The SY56028XR can
process clock signals as fast as 4.5GHz or data patterns
up to 6.4Gbps.
The differential input includes Micrel’s unique 3-pin input
termination architecture that interfaces to DC-coupled
2.5V/3.3V LVPECL, 1.2V/1.8V/2.5V CML or LVDS
differential signals. For AC-coupled input applications,
an internal voltage reference is provided for input bias.
Input voltages as small as 200mV (400mV_pp) are applied
before the 9, 18 or 27-inch FR4 transmission line.
The SY56028XR 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
(–40°C to +85°C). The SY56028XR is part of Micrel’s
high-speed, Precision Edge^® product line.
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
Features
Precision Edge^®
• 1.2V/1.8V/2.5V CML 4:2 MUX with input equalization.
• Guaranteed AC performance over temperature and
voltage:
– DC-to > 6.4Gbps throughput
– <360ps propagation delay (IN-to-Q)
– <15ps within-device skew
• Ultra-low jitter design
– <0.8ps_RMS random jitter
– <10ps_PP deterministic jitter
• 2.5V ±5% , 1.8/1.2V ±5% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 32-pin (5mm x 5mm) QFN package
Functional Block Diagram
Applications
• Data Distribution
• SONET clock and data distribution
• Fiber Channel clock and data distribution
• Gigabit Ethernet clock and data distribution
Precision Edge is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
April 2010
M9999-040810-A
[e-mail] or [phone]