SY58039U Datasheet, PDF (1/12 Pages) Micrel Semiconductor – ULTRA PRECISION 8:1 MUX WITH INTERNAL TERMINATION AND 1:2 400mV LVPECL FANOUT BUFFER

Micrel, Inc.
ULTRA PRECISION 8:1 MUX WITH
INTERNAL TERMINATION AND 1:2
400mV LVPECL FANOUT BUFFER
Precision Edge^®
Precision E^Sd^Y5g⁸e^0®39U
SY58039U
FEATURES
■ Selects between 1 of 8 inputs, and provides 2
precision, low skew LVPECL output copies
■ Guaranteed AC performance over temperature and
voltage:
• DC to 5Gbps throughput
• <490ps propagation delay IN-to-Q (V_IN ≥ 100mV)
• <85ps t_r / t_f time
• <15ps skew (output-to-output)
■ Unique, patent-pending, channel-to-channel
isolation design provides superior crosstalk
performance
■ Ultra-low jitter design:
• <1ps_rms random jitter
• <10ps_pp deterministic jitter
• <10ps_pp total jitter (clock)
• <0.7ps_rms crosstalk-induced jitter
■ Unique, patent-pending, input termination and VT
pin accepts DC- and AC-coupled inputs (CML, PECL,
LVDS)
■ 400mV LVPECL output swing
■ Power supply 2.5V ±5% or 3.3V ±10%
■ –40°C to +85°C temperature range
■ Available in 44-pin (7mm × 7mm) MLF^® package
DESCRIPTION
Precision Edge^®
The SY58039U is a low jitter, low skew, high-speed 8:1
multiplexer with a 1:2 differential fanout buffer optimized for
precision telecom and enterprise server distribution
applications. The SY58039U distributes clock frequencies
from DC to 4GHz, and data rates to 5Gpbs guaranteed
over temperature and voltage.
The SY58039U 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 without any level shifting or termination resistor
networks in the signal path. The outputs are 400mV, 100K-
compatible LVPECL with extremely fast rise/fall times
guaranteed to be less than 85ps.
The SY58039U features a patent-pending isolation design
that significantly improve channel-to-channel crosstalk
performance.
The SY58039U 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 SY58039U 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.
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.
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
M9999-020707
[e-mail] or [phone]
1
Rev.: C Amendment: /0
Issue Date: February 2007