SY89827LHY TR Micrel Inc, SY89827LHY TR Datasheet

3.3V Dual 1:20 Diff HSTL Fanout Buffer (I Temp, )

SY89827LHY TR

Manufacturer Part Number

SY89827LHY TR

Description

3.3V Dual 1:20 Diff HSTL Fanout Buffer (I Temp, )

Manufacturer

Micrel Inc

Series

Precision Edge®r

Type

Fanout Buffer (Distribution), Multiplexer , Translatorr

Datasheet

1.SY89827LHY_TR.pdf (11 pages)

Specifications of SY89827LHY TR

Number Of Circuits

1, 2

Ratio - Input:output

4:20, 2:10

Differential - Input:output

Yes/Yes

Input

HSTL, LVPECL

Output

HSTL

Frequency - Max

500MHz

Voltage - Supply

3.3 V ~ 3.47 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

500MHz

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

SY89827LHYTR
SY89827LHYTR

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Micrel, Inc.

■ Dual LVPECL or HSTL input, 10 differential 1.5V

■ Configurable as dual-channel 10 output or a single-

■ Guaranteed AC parameters over temperature and

• < 1.5ns propagation delay

■ Low jitter design

■ 3.3V core supply, 1.8V output supply

■ Output enable function

■ Available in a 64-Pin EPAD-TQFP

■ High-performance PCs

■ Workstations

■ Parallel processor-based systems

■ Other high-performance computing

■ Communications

Precision Edge is a registered trademark of Micrel, Inc.

M9999-073010

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

FEATURES

APPLICATIONS

TYPICAL APPLICATION CIRCUIT

HSTL compatible outputs

channel 20 output clock driver

voltage:

• > 500MHz f

• < 50ps within device skew

• < 700ps t

• 186fs

System using SY89827L as a switchover circuit from a Primary Clock to a Redundant Backup Clock in a failsafe application.

LVPECL inputs only, shown in this application.

RMS

phase jitter

/ t

MAX

time

Primary Clock Source

Redundant Backup

/LVPECL_CLKA

/LVPECL_CLKB

LVPECL_CLKA

LVPECL_CLKB

Clock Source

3.3V 500MHz DUAL 1:10 HSTL FANOUT

BUFFER/TRANSLATOR WITH 2:1 MUX INPUT

Primary/Backup Clock Select

(Switchover within 2.0ns)

SEL1

Driver with dual 1:10 or single 1:20 HSTL (High Speed

Transceiver Logic) output pairs. The part is designed for

use in low voltage (3.3V/1.8V) applications which require a

large number of outputs to drive precisely aligned, ultra low

skew signals to their destination. The input is multiplexed

from either HSTL or LVPECL (Low Voltage Positive Emitter

Coupled Logic) by the CLK_SEL pin. The Output Enables

(OE1 & 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.

of <50ps over temperature and voltage –performance

previously unachievable in a standard product having such

a high number of outputs. The SY89827L is available in a

single space saving package, enabling a lower overall cost

solution. For applications that require greater HSTL fanout

capability, consider the SY89824L.

DESCRIPTION

The SY89827L is a High Performance Bus Clock

The SY89827L features extremely low skew performance

Redundant

Primary

Card

Precision Edge

Rev.: F

Issue Date: July 2010

Precision Edge

SY89827L

Amendment: /0

SY89827L

Related parts for SY89827LHY TR

SY89827LHY TR Summary of contents

Page 1

Micrel, Inc. FEATURES ■ Dual LVPECL or HSTL input, 10 differential 1.5V HSTL compatible outputs ■ Configurable as dual-channel 10 output or a single- channel 20 output clock driver ■ Guaranteed AC parameters over temperature and voltage: • > 500MHz f MAX • < 50ps within device skew • < 1.5ns propagation delay • < 700ps time r f ■ Low jitter design • 186fs phase jitter ...

Page 2

Micrel, Inc. PACKAGE/ORDERING INFORMATION SEL2 1 HSTL_CLKB 2 /HSTL_CLKB 3 VCCI 4 HSTL_CLKA 5 /HSTL_CLKA 6 CLK_SEL1 7 LVPECL_CLKA 8 /LVPECL_CLKA 9 GND 10 OE1 ...

Page 3

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

Page 4

Micrel, Inc. PIN DESCRIPTIONS Pin Number Pin Name 5, 6 HSTL_CLKA /HSTL_CLKA 2, 3 HSTL_CLKB /HSTL_CLKB 8, 9 LVPECL_CLKA /LVPECL_CLKA 12, 13 LVPECL_CLKB /LVPECL_CLKB 7 CLK_SEL1 14 CLK_SEL2 ...

Page 5

Micrel, Inc. Absolute Maximum Ratings Power Supply Voltage ( ............... –0.5 to +4.0V CCI CCO Input Voltage (V ) ............................................ –0 Output Current (I ) ............................................... –50mA OUT Lead Temperature (T , Soldering, 20sec.) ...

Page 6

Micrel, Inc. DC ELECTRICAL CHARACTERISTICS LVPECL Input 3.3V ±5%, T CCI A Symbol Parameter V Input HIGH Voltage (Single-Ended Input LOW Voltage IL V Minimum Input Swing (LVPECL_CLK Common Mode Range (LVPECL_CLK) CMR I Input ...

Page 7

Micrel, Inc. AC ELECTRICAL CHARACTERISTICS V = 3.3V ±5 1.8V ±10%, T CCI CCO Symbol Parameter f Maximum Toggle Frequency MAX t Differential Propagation Delay PD V Minimum Input Swing, Note Switchover Time SW t ...

Page 8

Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS V = 3.3V 1.8V 25°C, unless otherwise stated. CCI CCO A Output Amplitude vs. Frequency 800 700 600 500 400 300 200 100 0 0 200 400 600 FREQUENCY (MHz) Propagation Delay vs. Input Amplitude 1400 ...

Page 9

Micrel, Inc. FUNCTIONAL CHARACTERISTICS V = 3.3V 1.8V 25°C, unless otherwise stated. CCI CCO A M9999-073010 hbwhelp@micrel.com or (408) 955-1690 9 ® Precision Edge SY89827L ...

Page 10

Micrel, Inc. LVPECL/HSTL INPUTS Figure 1. Simplified LVPECL Input Stage HSTL OUTPUTS Q OUT /Q OUT Figure 3. Output Driver Signal Levels (Single-Ended) RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function SY89809L 3.3V 1:9 High-Performance, Low-Voltage Bus Clock Driver SY89824L 3.3V 1:22 High-Performance, Low-Voltage Bus Clock Driver Exposed Pad Application Note M-0317 HBW Solutions MIC3775 ...

Page 11

Micrel, Inc. 64-PIN EPAD-TQFP (DIE UP) (H64-1) +0.03 –0.03 +0.012 –0.012 Heat Dissipation MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 tel The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed ...

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