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參數(shù)資料
| 型號(hào)： | SY89845U |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION |
| 中文描述： | 精密白血病短脈沖消除2:1 1:2扇出和內(nèi)部終端復(fù)用器 |
| 文件頁(yè)數(shù)： | 1/18頁(yè) |
| 文件大小： | 608K |
| 代理商： | SY89845U |
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SY89845U
Precision CML Runt Pulse Eliminator 2:1 MUX
with 1:2 Fanout and Internal Termination
General Description
The SY89845U is a low jitter CML, 2:1 differential
input multiplexer (MUX) optimized for redundant
source switchover applications. Unlike standard
multiplexers, the SY89845U unique 2:1 Runt Pulse
Eliminator (RPE) MUX prevents any short cycles or
“runt” 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’s 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 outputs are 400mV CML with fast
rise/fall times guaranteed to be less than 80ps.
The SY89845U 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
SY89845U 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 is a registered trademark of Micrel, Inc.
MLF and
Micro
LeadFrame are trademarks of Amkor Technology, 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
May 2005
M9999-052405
hbwhelp@micrel.com
or (408) 955-1690
Precision Edge
Features
Selects between two sources, and provides a glitch-
free, stable CML output
Guaranteed AC performance over temperature and
supply voltage:
– Wide operating frequency: 1kHz to >1.5GHz
– < 840ps In-to-Out t
pd
– < 80ps t
r
/t
f
Unique, patent-pending input isolation design
minimizes crosstalk
Fail-Safe Input prevents oscillations
Ultra-low jitter design:
– <1ps
RMS
random jitter
– <1ps
RMS
cycle-to-cycle jitter
– <10ps
PP
total jitter (clock)
– <0.7ps
RMS
MUX crosstalk induced jitter
Unique patented input termination and VT pin accepts
DC- and AC-coupled inputs (CML, PECL, LVDS)
400mV CML output swing
2.5V ±5% or 3.3V ±10% supply voltage
-40°C to +85°C industrial temperature range
Available in 24-pin (4mm x 4mm) MLF package
Applications
Redundant clock switchover
Fail-safe clock protection
Markets
LAN/WAN
Enterprise servers
ATE
Test and measurement
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SY89845UMG | PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION |
| SY89845UMGTR | PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION |
| SY89858UMG | PRECISION LOW POWER 1:8 LVPECL FANOUT BUFFER WITH INTERNAL TERMINATION |
| SY89858UMGTR | PRECISION LOW POWER 1:8 LVPECL FANOUT BUFFER WITH INTERNAL TERMINATION |
| SY89858U | PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY89845U_10 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision CML Runt Pulse Eliminator 2:1 MUX |
| SY89845UMG | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2.5/3.3V 2:1 RPE/FSI CML MUX w/ 1:2 Fanout (I Temp, Green) RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SY89845UMG TR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2.5/3.3V 2:1 RPE/FSI CML MUX w/ 1:2 Fanout (I Temp, Green) RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SY89845UMGTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision CML Runt Pulse Eliminator 2:1 MUX |
| SY89846U | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.5GHz Precision, LVPECL 1:5 Fanout with 2:1 |
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