SY58610U
3.2Gbps Precision, LVPECL 2:1 MUX with
Internal Termination and Fail Safe Input
General Description
The SY58610U is
a
2.5/3.3V, high-speed, fully
Precision Edge®
differential LVPECL 2:1 MUX capable of processing
clock signals up to 2.5GHz and data patterns up to
3.2Gbps. The SY58610U is optimized to provide a
buffered output of the selected input with less than
10pspp total jitter.
Features
• Precision 800mV LVPECL 2:1 MUX
• Guaranteed AC performance over temperature and
voltage:
The differential input includes Micrel’s unique, 3-pin
input termination architecture that interfaces to LVPECL,
LVDS or CML differential signals, (AC- or DC-coupled)
as small as 100mV (200mVPP) without any level-shifting
or termination resistor networks in the signal path. For
AC-coupled input interface applications, an integrated
reference voltage (VREF-AC) is provided to bias the VT pin.
The outputs are 800mV LVPECL, with extremely fast
rise/fall times guaranteed to be less than 130ps.
– DC-to > 3.2Gbps throughput
– <370ps propagation delay (IN-to-Q)
– <130ps rise/fall times
• Fail Safe Input
–
Prevents outputs from oscillating when input is
invalid
• Unique, patented MUX input isolation design
minimizes adjacent channel crosstalk
The SY58610U 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 CML or LVDS outputs, consider
Micrel’s SY58609U and SY58611U, 2:1 MUX with
400mV and 325mV output swings, respectively. The
SY58610U is part of Micrel’s high-speed, Precision
Edge® product line.
• Ultra-low jitter design
– <1psRMS cycle-to-cycle jitter
– <10psPP total jitter
– <1psRMS random jitter
– <10psPP deterministic jitter
• High-speed LVPECL outputs
• 2.5V ±5% or 3.3V ±10% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 16-pin (3mm x 3mm) QFN package
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Functional Block Diagram
Applications
• All SONET clock distribution
• Fibre Channel clock and data distribution
• Gigabit Ethernet clock and data distribution
• Backplane distribution.
Markets
• Storage
• ATE
• Test and measurement
• Enterprise networking equipment
• High-end servers
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
M9999-082907-C
hbwhelp@micrel.com or (408) 955-1690
August 2007