sy89200u Micrel Semiconductor, sy89200u Datasheet

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sy89200u

Manufacturer Part Number
sy89200u
Description
Sy89200u Ultra-precision 1 8 Lvds Fanout With Three ?1/?2/?4 Clock Divider Output Banks
Manufacturer
Micrel Semiconductor
Datasheet

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General Description
The SY89200U is a 2.5V precision, high-speed, integrated
clock divider and LVDS fanout buffer capable of handling
clocks up to 1.5GHz. Optimized for communications
applications, the three independently controlled output
banks are phase matched and can be configured for pass
through (÷1), ÷2 or ÷4 divider ratios.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows the user to interface to
any differential signal path. The low-skew, low-jitter
outputs are LVDS-compatible with extremely fast rise/fall
times guaranteed to be less than 150ps.
The EN (enable) input guarantees that the ÷1, ÷2 and ÷4
outputs will start from the same state without any runt
pulse after an asynchronous master rest (MR) is asserted.
This is accomplished by enabling the outputs after a four-
clock delay to allow the counters to synchronize.
The SY89200U is part of Micrel’s Precision Edge
family.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Functional Block Diagram
Precision Edge is a registered trademark of Micrel, Inc
MLF and MicroLeadFrame are registered trademark of Amkor Technology.
August 2007
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
®
product
Features
• Three low-skew LVDS output banks with programmable
• Three independently programmable output banks
• Guaranteed AC performance over temperature and
• Ultra-low jitter design:
• Patent-pending input termination and VT pin accepts
• LVDS-compatible outputs
• CMOS/TTL-compatible output enable (EN) and divider
• 2.5V ±5% power supply
• –40°C to +85°C temperature range
• Available in 32-pin (5mm x 5mm) MLF
Applications
• All SONET/SD applications
• All Fibre Channel applications
• All Gigabit Ethernet applications
408
÷1, ÷2 and ÷4 divider options
voltage:
– Accepts a clock frequency up to 1.5GHz
– <900ps IN-to-OUT propagation delay
– <150ps rise/fall time
– <50ps bank-to-bank phase offset
– <1ps
– <10ps
DC- and AC-coupled inputs (CML, PECL, LVDS)
select control
Ultra-Precision 1:8 LVDS Fanout Buffer
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
with Three ÷1/÷2/÷4 Clock Divider
RMS
PP
random jitter
total jitter (clock)
Output Banks
SY89200U
hbwhelp@micrel.com
®
or (408) 955-1690
Precision Edge
M9999-082407-E
package
®

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sy89200u Summary of contents

Page 1

... General Description The SY89200U is a 2.5V precision, high-speed, integrated clock divider and LVDS fanout buffer capable of handling clocks up to 1.5GHz. Optimized for communications applications, the three independently controlled output banks are phase matched and can be configured for pass through (÷1), ÷2 or ÷4 divider ratios. ...

Page 2

... Package Temperature Type Range MLF-32 Industrial MLF-32 Industrial MLF-32 Industrial MLF-32 Industrial ® 32-Pin MLF (MLF-32) 2 Package Marking Lead Finish SY89200U Sn-Pb SY89200U Sn-Pb SY89200U with Pb-Free Pb-Free bar-line indicator NiPdAu SY89200U with Pb-Free Pb-Free bar-line indicator NiPdAu hbwhelp@micrel.com SY89200U M9999-082407-E or (408) 955-1690 ...

Page 3

... -1.2V used for AC-coupling inputs Maximum sink/source capability is 0.5mA. CC /2. For the input enable and disable CC Q0 – – ÷1 ÷2 1 ÷2 ÷4 hbwhelp@micrel.com SY89200U / ÷2 ÷4 M9999-082407-E or (408) 955-1690 ...

Page 4

... JA Still-Air.........................................................35°C/W ® MLF (Ψ Junction –to-Board ......................................20°C/W Min Typ 2.375 2.5 80 100 40 50 1.2 0 0.1 0.2 V –1.3 V –1 Min Typ 2.0 –125 hbwhelp@micrel.com SY89200U Max Units 2.625 V 350 mA 120 Ω 60 Ω -0 –1 1.8 V Max Units V 0 µ ...

Page 5

... Min Typ Clock 1.5 500 700 115 output edges will deviate by more than the where T is the time between rising edges of the output M9999-082407-E hbwhelp@micrel.com or (408) 955-1690 SY89200U Max Units +50 mV Max Units GHz 900 ps 900 ps 900 ps fs/° ...

Page 6

... Micrel, Inc. Single-Ended Differential Swings Figure 1a. Single-Ended Voltage Swing Timing Diagram August 2007 Figure 1b. Differential Voltage Swing Figure 2a. Reset with Output Enabled 6 SY89200U M9999-082407-E hbwhelp@micrel.com or (408) 955-1690 ...

Page 7

... Micrel, Inc. August 2007 Figure 2b. Enable Timing Figure 2c. Disable Timing 7 SY89200U M9999-082407-E hbwhelp@micrel.com or (408) 955-1690 ...

Page 8

... Micrel, Inc. Typical Operating Characteristics August 2007 8 hbwhelp@micrel.com SY89200U M9999-082407-E or (408) 955-1690 ...

Page 9

... Micrel, Inc. Input Stage Internal Termination Input Interface Applications Figure 4a. CML Interface (DC-Coupled) Figure 4d. LVPECL Interface (AC-Coupled) August 2007 Figure 3. Simplified Differential Input Stage Figure 4b. CML Interface (AC-Coupled) Figure 4e. LVDS Interface 9 SY89200U Figure 4c. LVPECL Interface (DC-Coupled) M9999-082407-E hbwhelp@micrel.com or (408) 955-1690 ...

Page 10

... EMI low. Figure 5a. LVDS Differential Measurement Related Product and Support Documentation Part Number Function ® MLF Application Note HBW Solutions New Products and Applications August 2007 Figure 5b. LVDS Common Mode Measurement Datasheet Link www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf www.micrel.com/product-info/products/solutions.shtml 10 hbwhelp@micrel.com SY89200U M9999-082407-E or (408) 955-1690 ...

Page 11

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully August 2007 ® 32-Pin MicroLeadFrame indemnify Micrel for any damages resulting from such use or sale. © 2006 Micrel, Incorporated. 11 (MLF-32) hbwhelp@micrel.com SY89200U M9999-082407-E or (408) 955-1690 ...

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