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SY89840UMG Datasheet

  • SY89840UMG

  • Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer

  • 1746.18KB

  • 15頁(yè)

  • MICREL   MICREL

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SY89840U
Precision LVPECL Runt Pulse Eliminator 2:1
Multiplexer
General Description
The SY89840U is a low jitter PECL, 2:1 differential input
multiplexer (MUX) optimized for redundant source
switchover applications. Unlike standard multiplexers,
the SY89840U unique 2:1 Runt Pulse Eliminator (RPE)
MUX prevents any short cycles or 鈥渞unt鈥?pulses during
switchover. In addition, a unique Fail-Safe Input
protection prevents metastable conditions when the
selected input clock fails to a DC voltage (voltage
between the pins of the differential input drops below
100mV).
The differential input includes Micrel鈥檚 unique, 3-pin
input termination architecture that allows customers to
interface 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
output is 800mV, 100K compatible LVPECL with fast
rise/fall times guaranteed to be less than 190ps.
The SY89840U operates from a 2.5V 鹵5% or 3.3V
鹵10% supply and is guaranteed over the full industrial
temperature range of 鈥?0擄C to +85擄C. The SY89840U is
廬
part of Micrel鈥檚 high-speed, Precision Edge product
line. All support documentation can be found on Micrel鈥檚
web site at:
www.micrel.com.
Precision Edge
廬
Features
鈥?/div>
Selects between two sources, and provides a glitch-free,
stable LVPECL output
鈥?/div>
Guaranteed AC performance over temperature and supply
voltage:
鈥?Wide operating frequency: 1kHz to >1.5GHz
鈥?< 880ps In-to-Out t
pd
鈥?< 190ps t
r
/t
f
鈥?/div>
Unique patent-pending input isolation design minimizes
crosstalk
鈥?/div>
Fail-safe input prevents oscillations
鈥?/div>
Ultra-low jitter design:
鈥?<1ps
rms
random jitter
鈥?<1ps
rms
cycle-to-cycle jitter
鈥?<10ps
pp
total jitter (clock)
鈥?<0.7ps
rms
MUX crosstalk induced jitter
鈥?/div>
Unique patent-pending input termination and VT pin
accepts DC-coupled and AC-coupled inputs (CML,
PECL, LVDS)
鈥?/div>
800mV LVPECL output swing
鈥?/div>
2.5V 鹵5% or 3.3V 鹵10% supply voltage
鈥?/div>
鈥?0擄C to +85擄C industrial temperature range
鈥?/div>
Available in 16-pin (3mm x 3mm) MLF
鈩?/div>
package
Applications
鈥?/div>
Redundant clock switchover
鈥?/div>
Failsafe clock protection
Markets
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
LAN/WAN
Enterprise servers
ATE
Test and measurement
Precision Edge is a registered trademark of Micrel, Inc.
MLF and
MicroLeadFrame
are trademarks of Amkor Technology, Inc.
Micrel Inc. 鈥?2180 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel +1 (408) 944-0800 鈥?fax + 1 (408) 474-1000 鈥?http://www.micrel.com
February 2005
M9999-021705
hbwhelp@micrel.com
or (408) 955-1690

SY89840UMG 產(chǎn)品屬性

  • 100

  • 集成電路 (IC)

  • 邏輯 - 信號(hào)開關(guān)，多路復(fù)用器，解碼器

  • SY89

  • 多路復(fù)用器

  • 1 x 2:1

  • 1

  • -

  • 單電源

  • 3 V ~ 3.6 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 16-VFQFN 裸露焊盤，16-MLF?

  • 16-MLF?（3x3）

  • 管件

  • 576-1434

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