Datasheet > SY89843U

SY89843U

更新时间： 2024-11-27 14:54:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
17页	783K
描述
The SY89843U is a low jitter PECL, 2:1 differential input multiplexer (MUX) optimized for redundan

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SY89843U 数据手册

SY89843U

Precision LVPECL Runt Pulse Eliminator 2:1

MUX with 1:2 Fanout and Internal Termination

General Description

The SY89843U is a low jitter PECL, 2:1 differential input

multiplexer (MUX) optimized for redundant source

switchover applications. Unlike standard multiplexers,

the SY89843U 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).

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

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.

Unique patent-pending input isolation design

minimizes crosstalk



Fail-Safe Input prevents oscillations

Ultra-low jitter design:

– 65fs RMS phase jitter (Type)

– 0.7ps_RMSMUX crosstalk induced jitter

Unique patent-pending input termination and VT

pin accepts DC- and AC-coupled inputs (CML,

PECL, LVDS)



The SY89843U 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 SY89843U 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.



800mV LVPECL 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) QFN package

Applications



Redundant clock switchover

Failsafe clock protection

Markets



LAN/WAN

Enterprise servers

ATE

Test and measurement

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

M9999-052207-B

hbwhelp@micrel.com or (408) 955-1690

Oct. 1, 2013

12 3 4 5 6 7...17

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与SY89843U相关器件

型号	品牌	获取价格	描述	数据表
SY89843U_10	MICREL	获取价格	Precision LVPECL Runt Pulse Eliminator 2:1
SY89843UMG	MICREL	获取价格	Precision LVPECL Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination
SY89843UMGTR	MICREL	获取价格	Precision LVPECL Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination
SY89843UMGTR	MICROCHIP	获取价格	89843 SERIES, 2 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, QCC24, 4 X 4 MM, LEAD FR
SY89844U	MICREL	获取价格	Precision LVDS Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination
SY89844U	MICROCHIP	获取价格	The SY89844U is a low jitter LVDS, 2:1 input multiplexer (MUX) optimized for redundant sou
SY89844U_10	MICREL	获取价格	Precision LVDS Runt Pulse Eliminator 2:1
SY89844UMG	MICREL	获取价格	Precision LVDS Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination
SY89844UMGTR	MICREL	获取价格	Precision LVDS Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination
SY89845U	MICREL	获取价格	PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION

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