SY58608U_10 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – 3.2Gbps Precision, 1:2 LVDS Fanout Buffer

SY58608U
3.2Gbps Precision, 1:2 LVDS Fanout Buffer
with Internal Termination and Fail Safe Input
General Description
The SY58608U is a 2.5V, high-speed, fully differential
1:2 LVDS fanout buffer optimized to provide two
identical output copies with less than 20ps of skew and
less than 10ps_PP total jitter. The SY58608U can process
clock signals as fast as 2GHz or data patterns up to
3.2Gbps.
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 (200mV_PP) without any level-shifting
or termination resistor networks in the signal path. For
AC-coupled input interface applications, an integrated
voltage reference (V_REF-AC) is provided to bias the V_T pin.
The outputs are 325mV LVDS, with rise/fall times
guaranteed to be less than 100ps.
The SY58608U operates from a 2.5V ±5% supply and is
guaranteed over the full industrial temperature range (–
40°C to +85°C). For applications that require CML or
LVPECL outputs, consider Micrel’s SY58606U and
SY58607U, 1:2 fanout buffers with 400mV and 800mV
output swings respectively. The SY58608U 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.
Functional Block Diagram
Features
Precision Edge^®
• Precision 1:2, 325mV LVDS fanout buffer
• Guaranteed AC performance over temperature and
voltage:
– DC-to > 3.2Gbps throughput
– <300ps propagation delay (IN-to-Q)
– <20ps within-device skew
– <100ps rise/fall times
• Fail Safe Input
– Prevents outputs from oscillating when input is
invalid
• Ultra-low jitter design
– <1ps_RMS cycle-to-cycle jitter
– <10ps_PP total jitter
– <1ps_RMS random jitter
– <10ps_PP deterministic jitter
• High-speed LVDS outputs
• 2.5V ±5% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 16-pin (3mm x 3mm) QFN package
Applications
• All SONET clock and data distribution
• Fibre Channel clock and data distribution
• Gigabit Ethernet clock and data distribution
• Backplane distribution
Markets
• DataCom
• Telecom
• Storage
• ATE
• Test and Measurement
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
October 2006
M9999-102706-A
[e-mail] or [phone]