SY89828LHY-TR datasheet, PDF - EEWORLD Datasheet

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SY89828LHY-TR: DescriptionClock Multiplexer 10-OUT 4-IN Dual 1:5 64-Pin TQFP EP T/R; File Size155KB，13 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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SY89828LHY-TR Overview

Clock Multiplexer 10-OUT 4-IN Dual 1:5 64-Pin TQFP EP T/R

SY89828LHY-TR 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	Clock Multiplexer
Fanout	Dual 1:5
Number of Outputs per Chip	10
Maximum Propagation Delay Time @ Maximum CL (ns)	1.6@2.97V to 3.63V
Absolute Propagation Delay Time (ns)	1.6
Input Logic Level	LVDS\|LVPECL
Output Logic Level	LVDS
Minimum Operating Supply Voltage (V)	3
Typical Operating Supply Voltage (V)	3.3
Maximum Operating Supply Voltage (V)	3.6
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Supplier Temperature Grade	Industrial
Packaging	Tape and Reel
Supplier Package	TQFP EP
Pin Count	64
Mounting	Surface Mount
Package Height	1
Package Length	10
Package Width	10
PCB changed	64

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MicreL, Inc.

Precision Edge

3.3V 1GHz DUAL 1:10 PRECISION

SY89828L

Precision Edge

LVDS FANOUT BUFFER/

SY89828L

TRANSLATOR WITH 2:1 INPUT MUX

FEATURES

■

High-performance dual 1:10, 1GHz LVDS fanout

buffer/translator

■

Two banks of 10 differential LVDS outputs

■

Guaranteed AC parameters over temperature and

voltage:

• > 1GHz f

MAX

• < 50ps within device skew

• < 400ps t

, t

time

■

Each bank includes a 2:1 input mux

■

2:1 mux input accepts LVDS and LVPECL

■

Low jitter performance

• < 1ps

RMS

cycle-to-cycle jitter

• < 1ps

total jitter

■

3.3V supply voltage

■

Output enable function

■

LVDS input includes internal 100

Ω

termination

■

Available in a 64-Pin EPAD-TQFP

Precision Edge

DESCRIPTION

The SY89828L is a precision fanout buffer with 20

differential LVDS (Low Voltage Differential Swing) output

pairs. The part is designed for use in low voltage 3.3V

applications that require a large number of outputs to drive

precisely aligned, ultra low-skew signals to their destination.

The input is multiplexed from either LVDS or LVPECL (Low

Voltage Positive Emitter Coupled Logic) by the CLK_SEL1

and CLK_SEL2 pins. The Output Enables (OE1 and OE2)

are synchronous so that the outputs will only be enabled/

disabled when they are already in the LOW state. This

avoids any chance of generating a runt clock pulse when

the device is enabled/disabled as can happen with an

asynchronous control.

The SY89828L features a low pin-to-pin skew of less

than 50ps—performance previously unachievable in a

standard product having such a high number of outputs.

The SY89828L is available in a single space saving package,

enabling a lower overall cost solution.

APPLICATIONS

■

Enterprise networking

■

High-end servers

■

Communications

TYPICAL APPLICATION CIRCUIT

100Ω

Primary

Card

Primary Clock Source

LVDS_CLKA

/LVDS_CLKA

Backup Clock Source

LVDS_CLKB

/LVDS_CLKB

100Ω

Redundant

Card

SEL1

Primary/Backup Clock Select

(Switchover with 2.0ns)

System using SY89828L as a switchover circuit from a Primary Clock to a Redundant backup Clock in a fail-safe application.

LVPECL inputs not shown in this application.

Precision Edge is a registered trademark of Micrel, Inc.

M9999-012208

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

Rev.: D

Amendment: /0

Issue Date: January 2008

SY89828LHY-TR Related Products

	SY89828LHY-TR	SY89828LHY
Description	Clock Multiplexer 10-OUT 4-IN Dual 1:5 64-Pin TQFP EP T/R	Clock Multiplexer 10-OUT 4-IN Dual 1:5 64-Pin TQFP EP Tray
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	Clock Multiplexer	Clock Multiplexer
Fanout	Dual 1:5	Dual 1:5
Number of Outputs per Chip	10	10
Maximum Propagation Delay Time @ Maximum CL (ns)	1.6@2.97V to 3.63V	1.6@2.97V to 3.63V
Absolute Propagation Delay Time (ns)	1.6	1.6
Input Logic Level	LVDS\|LVPECL	LVDS\|LVPECL
Output Logic Level	LVDS	LVDS
Minimum Operating Supply Voltage (V)	3	3
Typical Operating Supply Voltage (V)	3.3	3.3
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	Tape and Reel	Tray
Supplier Package	TQFP EP	TQFP EP
Pin Count	64	64
Mounting	Surface Mount	Surface Mount
Package Height	1	1
Package Length	10	10
Package Width	10	10
PCB changed	64	64

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