SY89854UMG datasheet, PDF - EEWORLD Datasheet

SY89854UMG: DescriptionClock Fanout Buffer 4-OUT 1-IN 1:4 16-Pin QFN EP Tube; File Size504KB，13 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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SY89854UMG Overview

Clock Fanout Buffer 4-OUT 1-IN 1:4 16-Pin QFN EP Tube

SY89854UMG Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Type	Fanout Buffer
Fanout	1:4
Number of Outputs per Chip	4
Maximum Input Frequency (MHz)	3500(Typ)
Maximum Propagation Delay Time @ Maximum CL (ns)	0.34@2.375V to 3.63V
Absolute Propagation Delay Time (ns)	0.34
Input Logic Level	PECL\|LVDS\|CML
Output Logic Level	LVPECL
Minimum Operating Supply Voltage (V)	2.375
Typical Operating Supply Voltage (V)	3.3\|2.5
Maximum Operating Supply Voltage (V)	3.6
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Supplier Temperature Grade	Industrial
Packaging	Tube
Supplier Package	QFN EP
Pin Count	16
Mounting	Surface Mount
Package Height	0.85(Max)
Package Length	3
Package Width	3
PCB changed	16

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SY89854U

Precision Low Power 1:4 LVPECL Fanout

Buffer/Translator with Internal Termination

General Description

The SY89854U is a 2.5V/3.3V precision, high-

speed, fully differential 1:4 LVPECL fanout buffer.

Optimized to provide four identical output copies

with less than 20ps of skew and less than 10ps

(pp)

total jitter, the SY89854U can process clock signals

as fast as 2GHz.

The differential input includes Micrel’s unique, patent

pending 3-pin input termination architecture that

interfaces to any differential signal (AC or DC-

coupled) as small as 100mV (200mVpp) without any

level shifting or termination resistor networks in the

signal path. For AC-coupled input interface

applications, an on-board output reference voltage

(VREF-AC) is provided to bias the center-tap (VT)

pin. The outputs are 800mV LVPECL, with fast

rise/fall times guaranteed to be less than 180ps.

The SY89854U 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.

The SY89854U 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

•

Precision 1:4, LVPECL fanout buffer

•

Low power: 137mW (2.5V typ)

•

Guaranteed AC performance over temperature

and supply voltage:

– DC- to > 2GHz Clock f

MAX

– <340ps t

– <180ps t

time

– <20ps max. skew

•

Ultra-low jitter design:

– <1ps

(rms)

random jitter

– <10ps

(pp)

deterministic jitter

– <10ps

(pp)

total jitter (clock)

•

Unique patent pending input termination and VT

pin accepts DC-coupled and AC-coupled inputs

(CML, PECL, LVDS)

•

Typical 800mV (100k) LVPECL output swing

•

Power supply 2.5V ±5% or 3.3V ±10%

•

Industrial temperature range –40°C to +85°C

•

Available in ultra-small (3mm x 3mm) 16-pin QFN

package

Typical Applications

200MHz (Q - /Q)

Applications

•

SONET and All GigE clock distribution

•

Fibre Channel clock and data distribution

•

Backplane distribution

Output Swing

(200mV/di

v.)

TIME (600ps/di

v.)

United States Patent No. RE44,134

Precision Edge is a registered trademark of Micrel, Inc.

August 2007

M9999-082907-C

hbwhelp@micrel.com

or (408) 955-1690

SY89854UMG Related Products

	SY89854UMG	SY89854UMGTR
Description	Clock Fanout Buffer 4-OUT 1-IN 1:4 16-Pin QFN EP Tube	Clock Fanout Buffer 4-OUT 1-IN 1:4 16-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	Fanout Buffer	Fanout Buffer
Fanout	1:4	1:4
Number of Outputs per Chip	4	4
Maximum Input Frequency (MHz)	3500(Typ)	3500(Typ)
Maximum Propagation Delay Time @ Maximum CL (ns)	0.34@2.375V to 3.63V	0.34@2.375V to 3.63V
Absolute Propagation Delay Time (ns)	0.34	0.34
Input Logic Level	PECL\|LVDS\|CML	LVDS\|CML\|PECL
Output Logic Level	LVPECL	LVPECL
Minimum Operating Supply Voltage (V)	2.375	2.375
Typical Operating Supply Voltage (V)	3.3\|2.5	3.3\|2.5
Maximum Operating Supply Voltage (V)	3.6	3.6
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	16	16
Mounting	Surface Mount	Surface Mount
Package Height	0.85(Max)	0.85(Max)
Package Length	3	3
Package Width	3	3
PCB changed	16	16

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