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參數資料
| 型號： | SY89840U |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
| 中文描述： | 精密的LVPECL短脈沖消除2:1多路復用器 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 1745K |
| 代理商： | SY89840U |
SY89840U
Precision LVPECL Runt Pulse Eliminator 2:1
Multiplexer
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
February 2005
M9999-021705
hbwhelp@micrel.com
or (408) 955-1690
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 “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
output is 800mV, 100K compatible LVPECL with fast
rise/fall times guaranteed to be less than 190ps.
The SY89840U 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 SY89840U 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
Selects between two sources, and provides a glitch-free,
stable LVPECL output
Guaranteed AC performance over temperature and supply
voltage:
– Wide operating frequency: 1kHz to >1.5GHz
– < 880ps In-to-Out t
pd
– < 190ps 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 patent-pending input termination and VT pin
accepts DC-coupled and AC-coupled inputs (CML,
PECL, LVDS)
800mV LVPECL output swing
2.5V ±5% or 3.3V ±10% supply voltage
–40°C to +85°C industrial temperature range
Available in 16-pin (3mm x 3mm) MLF
package
Applications
Redundant clock switchover
Failsafe clock protection
Markets
LAN/WAN
Enterprise servers
ATE
Test and measurement
相關PDF資料 |
PDF描述 |
|---|---|
| SY89840UMG | Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
| SY89840UMGTR | Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
| SY89841U | Precision CML Runt Pulse Eliminator 2:1 Multiplexer |
| SY89842U | Precision CML Runt Pulse Eliminator 2:1 Multiplexer |
| SY89845U | PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SY89840U_10 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision LVPECL Runt Pulse Eliminator 2:1 |
| SY89840UMG | 功能描述:編碼器、解碼器、復用器和解復用器 Precision 2:1 LVPECL MUX w/ RPE & FSI (I Temp, Green) RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SY89840UMG TR | 功能描述:編碼器、解碼器、復用器和解復用器 Precision 2:1 LVPECL MUX w/ RPE & FSI (I Temp, Green) RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SY89840UMGTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
| SY89841U | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision CML Runt Pulse Eliminator 2:1 Multiplexer |
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