Micrel, Inc.
3.3V/5V 3GHz PECL/ECL
2:1 MULTIPLEXER
Precision Edge
廬
SY89208V
Precision Edge
廬
SY89208V
FEATURES
s
2:1 PECL/ECL multiplexer
s
Guaranteed AC-performance over temperature/
voltage
鈥?>3GHz f
MAX
(toggle)
鈥?<200ps rise/fall time
鈥?<420ps propagation delay (D-to-Q)
s
Low jitter performance
鈥?<1ps
RMS
random jitter
鈥?<15ps
PP
deterministic jitter
鈥?<10ps
PP
total jitter (clock)
s
Flexible supply voltage: 3V to 5.5V
100k ECL/PECL compatible output
s
Wide operating temperature range: 鈥?0
擄
C to +85
擄
C
s
Available in ultra-small 8-pin MLF鈩?(2mm x 2mm)
package
Precision Edge
廬
DESCRIPTION
The SY89208V is a 3.3V/5V precision high-speed 2:1
multiplexer. It is functionally equivalent to the SY100EP58V
but in an ultra-small 8-lead MLF鈩?package that features a
70% smaller footprint. The signal-path inputs (Da and Db)
are single-ended PECL/ECL compatible, and can accept a
signal swing as low as 150mV. All I/O pins are 10k/100k EP
ECL/PECL compatible.
AC-performance is guaranteed over the industrial 鈥?0擄C
to +85擄C temperature range and 3.0V to 5.5V supply voltage
range. Maximum throughput (f
MAX
) is guaranteed to be 3GHz
with a differential output swing
鈮?00mV.
In addition, these
multiplexers are optimized for low-jitter applications. The
SY89208V is designed to operate in either ECL/PECL or
PECL/LVPECL mode. The SY89208V is internally
temperature compensated, thus is 100k EP ECL/PECL
compatible鈥擨/O logic levels remain constant over
temperature.
The SY89208V is part of Micrel鈥檚 high-speed, Precision
Edge鈩?timing and distribution family. For applications that
require a differential I/O combination, consult the Micrel
website at: www.micrel.com, and choose from a
comprehensive product line of high-speed, low skew fanout
buffers, translators, and clock dividers.
APPLICATIONS
s
s
s
s
SONET
Gig Ethernet
Fibre Channel
Transponders
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE
Single-Ended PECL Da
Single-Ended PECL Db
1
0
Q
/Q
SEL
(PECL/ECL)
Output Swing
(60mV/div.)
TIME (50ps/div.)
2.7Gbps, 2
23
鈥?1PRBS
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame
and MLF are trademarks of Amkor Technology, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
Rev.: B
Amendment: /0
1
Issue Date: May 2005
MICREL
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