SY89828LHY Micrel Inc, SY89828LHY Datasheet

SY89828LHY

Manufacturer Part Number

SY89828LHY

Description

IC BUFFER/XLATOR LVDS 64-TQFP

Manufacturer

Micrel Inc

Series

Precision Edge®r

Type

Fanout Buffer (Distribution), Multiplexer , Translatorr

Datasheet

1.SY89828LHY.pdf (13 pages)

Specifications of SY89828LHY

Number Of Circuits

Ratio - Input:output

2:10

Differential - Input:output

Yes/Yes

Input

LVDS, PECL

Output

LVDS

Frequency - Max

1GHz

Voltage - Supply

3 V ~ 3.6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP

Frequency-max

1GHz

Number Of Clock Inputs

Mode Of Operation

Differential

Output Frequency

1000MHz

Output Logic Level

LVDS

Operating Supply Voltage (min)

Operating Supply Voltage (typ)

3.3V

Operating Supply Voltage (max)

3.6V

Package Type

TQFP EP

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Signal Type

LVDS/LVPECL

Mounting

Surface Mount

Pin Count

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-2091
SY89828LHY

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SY89828LHY

Manufacturer:

MICREL

Quantity:

506

Company:

BOSTOCK HK LIMITED

Part Number:

SY89828LHY

Manufacturer:

Micrel Inc

Quantity:

10 000

Company:

BOSTOCK HK LIMITED

Part Number:

SY89828LHY TR

Manufacturer:

Micrel Inc

Quantity:

10 000

Current page: 1 of 13
Download datasheet (158Kb)

MicreL, Inc.

Precision Edge is a registered trademark of Micrel, Inc.

M9999-012208

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

FEATURES

APPLICATIONS

TYPICAL APPLICATION CIRCUIT

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

• < 50ps within device skew

• < 400ps t

Each bank includes a 2:1 input mux

2:1 mux input accepts LVDS and LVPECL

Low jitter performance

• < 1ps

3.3V supply voltage

Output enable function

LVDS input includes internal 100

Available in a 64-Pin EPAD-TQFP

Enterprise networking

High-end servers

Communications

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.

RMS

total jitter

MAX

, t

cycle-to-cycle jitter

time

Primary Clock Source

Backup Clock Source

/LVDS_CLKA

/LVDS_CLKB

LVDS_CLKA

LVDS_CLKB

Ω

termination

3.3V 1GHz DUAL 1:10 PRECISION

LVDS FANOUT BUFFER/

TRANSLATOR WITH 2:1 INPUT MUX

Primary/Backup Clock Select

(Switchover with 2.0ns)

SEL1

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.

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.

DESCRIPTION

The SY89828L is a precision fanout buffer with 20

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

100Ω

Redundant

Primary

Card

Precision Edge

Rev.: D

Issue Date: January 2008

Precision Edge

SY89828L

Amendment: /0

SY89828L

Related parts for SY89828LHY

SY89828LHY Summary of contents

Page 1

MicreL, Inc. 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 , ...

Page 2

... CLK_SEL2 SEL2 OE2 2 Precision Edge (1) Operating Package Range Marking Industrial SY89828LHI Industrial SY89828LHI Industrial SY89828LHY with Pb-Free bar-line indicator Matte-Sn Industrial SY89828LHY with Pb-Free bar-line indicator Matte-Sn = 25°C, DC electricals only – /Q0 – /Q9 LEN Q10 – Q19 10 /Q10 – /Q19 LEN Q D ® ...

Page 3

MicreL, Inc. PIN DESCRIPTIONS Pin Number Pin Name 5, 6 LVDS_CLKA /LVDS_CLKA 2, 3 LVDS_CLKB /LVDS_CLKB 8, 9 LVPECL_CLKA /LVPECL_CLKA 12, 13 LVPECL_CLKB /LVPECL_CLKB 7 CLK_SEL1 14 CLK_SEL2 16 SEL1 1 SEL2 11 OE1 15 OE2 4 VCCI 17, 32, ...

Page 4

Micrel, Inc. Pin Number Pin Name 38, 36, 34, 30, 28 /Q10 – /Q19 26, 24, 22, 20, 18 M9999-012208 hbwhelp@micrel.com or (408) 955-1690 Internal I/O Type P/U Pin Function Output LVDS Differential outputs (complement) from CLKA when SEL2 = ...

Page 5

MicreL, Inc. TRUTH TABLE (1) (1) (1) (1) OE1 OE2 SEL1 SEL2 CLK_SEL1 ...

Page 6

Micrel, Inc. Absolute Maximum Ratings Power Supply Voltage ( .............. –0.5 to +4.0V CCI CCO Input Voltage (V ) ........................................... –0 Output Current (I ) ............................................... ±10mA OUT Storage Temperature (T ) ........................... –65 ...

Page 7

MicreL, Inc. DC ELECTRICAL CHARACTERISTICS LVPECL Input : V = 3.3V ±10 Symbol Parameter V Input HIGH Voltage (Single-Ended Input LOW Voltage IL V Minimum Input Swing (LVPECL_CLK Common Mode Range (LVPECL_CLK) Note 6 ...

Page 8

Micrel, Inc. AC ELECTRICAL CHARACTERISTICS V = 3.3V ±10 –40°C to +85°C, unless noted Symbol Parameter f Maximum Toggle Frequency MAX t Differential Propagation Delay PHL t Note 3 PLH t Clock Input Switchover SWITCHOVER t ...

Page 9

MicreL, Inc. TYPICAL OPERATING CHARACTERISTICS (Conditions 3.3V 25°C, unless otherwise stated Output Amplitude vs. Frequency 500 450 400 350 300 250 200 150 100 200 400 600 800 1000 1200 FREQUENCY ...

Page 10

Micrel, Inc. FUNCTIONAL CHARACTERISTICS 155MHz Output T = 25° 3.3V CC TIME (500ps/div.) M9999-012208 hbwhelp@micrel.com or (408) 955-1690 T = 25° 3.3V CC 1GHz Output T = 25° 3.3V CC TIME ...

Page 11

MicreL, Inc. LVPECL/LVDS INPUTS V LVPECL_CLK 5k /LVPECL_CLK GND Figure 1. Simplified LVPECL Input Stage LVDS OUTPUTS LVDS stands for Low Voltage Differential Swing. LVDS specifies a small swing of 350mV typical nominal 1.25V common mode above ground. ...

Page 12

Micrel, Inc. DETAILED DESCRIPTION The SY89828L is a precision dual 1:10 fanout buffer. It allows either LVPECL or LVDS inputs, selectable by an input muxes, and outputs 2 sets of 10 LVDS output pairs. The device features 2 synchronous output ...

Page 13

MicreL, Inc. 64-PIN EPAD-TQFP (DIE UP) (H64-1) +0.03 –0.03 +0.012 –0.012 Package Notes: Note 1. Note 2. Note 3. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in ...

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