SY58040U_11 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – ULTRA PRECISION 4×4 CML SWITCH WITH INTERNAL I/O TERMINATION

Micrel, Inc.
ULTRA PRECISION 4×4 CML
SWITCH WITH INTERNAL
I/O TERMINATION
Precision E^Sd^Y5g⁸e^0®40U
SY58040U
FEATURES
■ Provides crosspoint switching between any input
pair to any output pair
■ Ultra-low jitter design:
• 67fs_RMS phase jitter (typ)
■ Guaranteed AC performance over temperature and
voltage:
• DC to >5Gbps throughput
• <350ps propagation delay
• <60ps t_r / t_f times
• <25ps skew (output-to-output)
■ Unique, patent-pending, channel-to-channel
isolation design provides superior crosstalk
performance
■ Unique, patent-pending, 50Ω input termination
extended CMVR, and VT pin accepts DC- and AC-
coupled differential inputs
■ 400mV CML output swing
■ 50Ω source terminated outputs minimize round-trip
reflections
■ Power supply 2.5V ±5% or 3.3V ±10%
■ –40°C to +85°C temperature range
■ Available in 44-pin (7mm × 7mm) QFN package
■ Pb-Free green package
Precision Edge^®
DESCRIPTION
The SY58040U is a low jitter, low skew, high-speed
4×4 crosspoint switch optimized for precision telecom and
enterprise server/storage distribution applications. The
SY58040U distributes clock frequencies from DC to 4GHz,
and data rates to 5Gbps guaranteed over temperature and
voltage.
The SY58040U differential input includes Micrel’s unique,
3-pin input termination architecture that directly interfaces
to any differential signal (AC- or DC-coupled) as small as
100mV (200mV_pp) without any level shifting or termination
resistor networks in the signal path. The outputs are 50Ω
source-terminated CML with extremely fast rise/fall times
guaranteed to be less than 60ps.
The SY58040U features a patent-pending isolation design
that significantly improves on channel-to-channel crosstalk
performance.
The SY58040U operates from a 2.5V ±5% or 3.3V ±10%
supply and is guaranteed over the full industrial temperature
range of –40°C to +85°C. The SY58040U 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.
APPLICATIONS
■ Data communication systems
■ All SONET/SDH data/clock applications
■ All Fibre Channel applications
■ All Gigabit Ethernet applications
Precision Edge is a registered trademark of Micrel, Inc.
M9999-103009
[e-mail] or [phone]
1
Rev.: F
Amendment: /0
Issue Date: October 2011