SY898535L Datasheet, PDF (1/7 Pages) Micrel Semiconductor – Precision Differential 3.3V, Low Skew, 1:4 LVCMOS/LVTTL -to-LVPECL Fanout Buffer

SY898535L
Precision Differential 3.3V, Low Skew, 1:4
LVCMOS/LVTTL -to-LVPECL Fanout Buffer
General Description
The SY898535L is a 3.3V, low skew, 1:4 LVCMOS/LVTTL-
to-LVPECL fanout buffer with two selectable single ended
clock inputs. The CLK0 and CLK1 accept LVCMOS or
LVTTL input levels and translate them to 3.3V LVPECL
levels. To eliminate runt pulses on the outputs during
asynchronous assertion/de-assertion of the clock enable
pin, the clock enable is synchronized with the input signal.
The SY898535L operates from a 3.3V ±5% supply and is
guaranteed over the full industrial temperature range of
–40°C to +85°C. The SY898535L is part of Micrel’s high-
speed, Precision Edge^® product line.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Functional Block Diagram
Features
• Provides four differential 3.3V LVPECL copies
• Selects between single-ended CLK0 or CLK1 input
• CLK0 and CLK1 accept LVCMOS or LVTTL input levels
• Guaranteed AC performance over temperature and
supply voltage:
235MHz Maximum output frequency
<1.9ns Propagation delay (In-to-Q)
<30ps Output skew
<250ps Part-to-part skew
Additive phase jitter, RMS: 0.09ps (typical)
• 3.3V ±5% supply voltage
• –40°C to +85°C industrial temperature operating range
• Available in a 20-pin TSSOP package
Applications
• Gigabit Ethernet
• 10Gigabit Ethernet
• SONET/SDH
• PCI
Markets
• LAN/WAN
• Enterprise servers
• 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
June 2011
M9999-062211-B
[e-mail] or [phone]