SY58023U_07 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – ULTRA-LOW JITTER 2 × 2 CROSSPOINT SWITCH w/CML OUTPUTS AND INTERNAL I/O TERMINATION

Micrel, Inc.
ULTRA-LOW JITTER 2 × 2 CROSSPOINT
SWITCH w/CML OUTPUTS AND
INTERNAL I/O TERMINATION
Precision Edge^®
Precision E^Sd^Y5g⁸e^0®23U
SY58023U
FEATURES
s Guaranteed AC performance over temperature and
voltage:
• >10.7Gbps data throughput
• <60ps t_r/t_f times
• <285ps t_pd (IN-to-Q)
• <20ps skew
s Low jitter:
• <10ps_pp total jitter (clock)
• <1ps_rms random jitter (data)
• <10ps_pp deterministic jitter (data)
s Crosstalk induced jitter: <0.7ps_rms
s Accepts an input signal as low as 100mV
s Unique input termination and V_T pin accepts DC-
coupled and AC-coupled differential inputs:
LVPECL, LVDS, and CML
s 50Ω source terminated CML outputs
s Fully differential inputs/outputs
s Power supply 2.5V ±5% and 3.3V ±10%
s Industrial –40°C to +85°C temperature range
s Available in 16-pin (3mm × 3mm) MLF^® package
DESCRIPTION
Precision Edge^®
The SY58023U is a 2.5V/3.3V precision, high-speed, fully
differential CML 2 × 2 crosspoint switch. The SY58023U is
optimized to provide two identical output copies with less
than 20ps of skew and ultra-low jitter. It can route clock
signals as fast as 6GHz or data up to 10.7Gbps.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows the SY58023U to directly
interface to LVPECL, LVDS, and 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. The CML outputs features 400mV typical swing into
50Ω loads, and provide an extremely fast rise/fall time
guaranteed to be less than 60ps.
The SY58023U 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 high speed dual CML switches, consider the
SY58024U. The SY58023U is part of Micrel’s high-speed,
Precision Edge^® product line.
Datasheets and support documentation can be found on
Micrel’s website at www.micrel.com.
APPLICATIONS
s Gigabit Ethernet data/clock routing
s SONET data/clocking routing
s Switch fabric clock routing
s Redundant switchover
s Backplane redundancy
FUNCTIONAL BLOCK DIAGRAM
SEL0
(TTL/CMOS)
IN0
50Ω
V_T0
50Ω
/IN0
SEL1
(TTL/CMOS)
IN1
50Ω
V_T1
50Ω
/IN1
0
Q0
/Q0
1
0
Q1
/Q1
1
Precision Edge is a registered trademark of Micrel , Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-020207
[e-mail] or [phone]
1
Rev.: F Amendment: /0
Issue Date: February 2007