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SY89855UMG

Description
Clock Multiplexer 2-OUT 4-IN 1:2 32-Pin QFN EP Tube
File Size608KB,13 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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SY89855UMG Overview

Clock Multiplexer 2-OUT 4-IN 1:2 32-Pin QFN EP Tube

SY89855UMG Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeClock Multiplexer
Fanout1:2
Number of Outputs per Chip2
Maximum Propagation Delay Time @ Maximum CL (ns)0.41@2.375V to 3.63V
Absolute Propagation Delay Time (ns)0.5
Input Logic LevelCML|LVDS|LVPECL
Output Logic LevelLVPECL
Minimum Operating Supply Voltage (V)2.375
Typical Operating Supply Voltage (V)2.5|3.3
Maximum Operating Supply Voltage (V)3.6
Maximum Quiescent Current (mA)85
Maximum Power Dissipation (mW)260
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTube
Supplier PackageQFN EP
Pin Count32
MountingSurface Mount
Package Height0.85(Max)
Package Length5
Package Width5
PCB changed32
SY89855U
Precision Low Power Differential LVPECL 4:1
MUX with 1:2 Fanout and Internal
Termination
General Description
The SY89855U is a 2.5V/3.3V precision, high-speed,
4:1 differential multiplexer with 100K LVPECL (800mV)
compatible outputs, capable of handling clocks up to
2.5GHz and data streams up to 2.5Gbps. In addition, a
1:2 fanout buffer provides two copies of the selected
inputs.
The differential input includes Micrel’s unique, 3-pin
input termination architecture that allows customers to
interface 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
result is a clean, stub-free, low-jitter interface solution.
The outputs are 800mV LVPECL, (100K temperature
compensated) with fast rise/fall times guaranteed to be
less than 180ps.
The SY89855U operates from a 2.5V ±5% supply or a
3.3V ±10% supply and is guaranteed over the full
industrial temperature range of –40°C to +85°C. For
applications that require higher performance, consider
the SY58029U. The SY89855U is part of Micrel’s high-
®
speed, Precision Edge product line.
All support documentation can be found on Micrel’s web
site at
www.micrel.com.
Precision Edge
®
Features
Select 1 of 4 differential inputs
Provides two copies of the selected input
Low power 260mW (V
CC
= 2.5V)
Guaranteed AC performance over temperature and
voltage:
– DC-to->2.5Gbps data rate throughput
– <410ps In-to-Q t
pd
– <180ps t
r
/ t
f
times
Ultra low-jitter design:
– <10ps
PP
total jitter (clock)
– <1ps
RMS
random jitter
– <10ps
PP
deterministic jitter
– <0.7ps
RMS
crosstalk-induced jitter
Unique, patent-pending input design minimizes
crosstalk
Accepts an input signal as low as 100mV
Unique patented input termination and VT pin
accepts DC- and AC-coupled inputs (CML, LVPECL,
LVDS)
800mV 100K LVPECL output swing
Power supply 2.5V ±5% or 3.3V ±10%
–40°C to +85°C temperature range
Available in 32-pin (5mm x 5mm) QFN package
Redundant clock and/or data distribution
All SONET/OC-3 to OC-48 clock/data distribution
Loopback
All Fibre Channel applications
All GigE applications
LAN/WAN communication
Enterprise servers
ATE
Test and measurement
Typical Performance
Applications
Markets
United States Patent No. RE44,134
Precision Edge is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2007
M9999-082907-C
hbwhelp@micrel.com
or (408) 955-1690

SY89855UMG Related Products

SY89855UMG SY89855UMG-TR
Description Clock Multiplexer 2-OUT 4-IN 1:2 32-Pin QFN EP Tube Clock Multiplexer 2-OUT 4-IN 1:2 32-Pin QFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant
ECCN (US) EAR99 EAR99
Part Status Active Active
HTS 8542.39.00.01 8542.39.00.01
Type Clock Multiplexer Clock Multiplexer
Fanout 1:2 1:2
Number of Outputs per Chip 2 2
Maximum Propagation Delay Time @ Maximum CL (ns) 0.41@2.375V to 3.63V 0.41@2.375V to 3.63V
Absolute Propagation Delay Time (ns) 0.5 0.5
Input Logic Level CML|LVDS|LVPECL CML|LVDS|LVPECL
Output Logic Level LVPECL LVPECL
Minimum Operating Supply Voltage (V) 2.375 2.375
Typical Operating Supply Voltage (V) 2.5|3.3 2.5|3.3
Maximum Operating Supply Voltage (V) 3.6 3.6
Maximum Quiescent Current (mA) 85 85
Maximum Power Dissipation (mW) 260 260
Minimum Operating Temperature (°C) -40 -40
Maximum Operating Temperature (°C) 85 85
Supplier Temperature Grade Industrial Industrial
Packaging Tube Tape and Reel
Supplier Package QFN EP QFN EP
Pin Count 32 32
Mounting Surface Mount Surface Mount
Package Height 0.85(Max) 0.85(Max)
Package Length 5 5
Package Width 5 5
PCB changed 32 32
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