sy89835u Micrel Semiconductor, sy89835u Datasheet

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sy89835u

Manufacturer Part Number
sy89835u
Description
Sy89835u 2.5v, 2ghz 3.2 Gbps Ultra-precision, Differential 1 2 Lvds Fanout Buffer With Internal Termination And Fail Safe Input
Manufacturer
Micrel Semiconductor
Datasheet

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General Description
The SY89835U is a 2.5V, high-speed 2GHz differential
Low Voltage Differential Swing (LVDS) 1:2 fanout buffer
optimized for ultra-low skew applications. Within device
skew is guaranteed to be less than 20ps over supply
voltage and temperature. A unique Fail-Safe Input (FSI)
protection prevents metastable conditions when no
signal is present or when the selected input clock fails to
a DC voltage (voltage between the pins of the
differential input drops sufficiently below 100 mV).
The SY89835U is part of Micrel’s high-speed clock
synchronization family. For applications that require a
different I/O combination, consult Micrel’s web site, and
choose from a comprehensive product line of high-
speed, low-skew fanout buffers, translators and clock
generators.
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
Functional Block Diagram
February 2006
Precision Edge is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Features
• Guaranteed AC performance over temperature and
• Fail Safe Input
• Ultra-low jitter design
• High-speed LVDS outputs
• 2.5V ±5% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 8-pin (2mm x 2mm) MLF™ package
Applications
• Clock or data distribution
• SONET clock or data distribution
• Fibre Channel clock or data distribution
• Gigabit Ethernet clock or data distribution
Markets
• DataCom
• Telecom
• Storage
• ATE
• Precision test and measurement
Differential 1:2 LVDS Fanout Buffer with
Internal Termination and Fail Safe Input
voltage:
– DC-to > 3.2Gbps throughput
– 210ps typical propagation delay (IN-to-Q)
– <20ps within-device skew
– <150ps rise/fall times
– <1ps
– <10ps
– <1ps
– <10ps
2.5V, 2GHz (3.2 Gbps) Ultra-Precision,
Prevents outputs from oscillating
RMS
RMS
PP
PP
cycle-to-cycle jitter
total jitter
random jitter
deterministic jitter
SY89835U
hbwhelp@micrel.com
or (408) 955-1690
Precision Edge
M9999-020706
®

Related parts for sy89835u

sy89835u Summary of contents

Page 1

... General Description The SY89835U is a 2.5V, high-speed 2GHz differential Low Voltage Differential Swing (LVDS) 1:2 fanout buffer optimized for ultra-low skew applications. Within device skew is guaranteed to be less than 20ps over supply voltage and temperature. A unique Fail-Safe Input (FSI) protection prevents metastable conditions when no ...

Page 2

... Ordering Information Part Number Package SY89835UMG MLF-8 (2) SY89835UMGTR MLF-8 Notes: 1. Contact factory for die availability. Dice are guaranteed 25°C, DC Electricals only. 2. Tape and Reel. Pin Configuration Pin Description Pin Number Pin Name 1 VCC 2, 3 IN, /IN 4 GND 5, 6 /Q1 /Q0, Q0 ...

Page 3

Absolute Maximum Ratings Supply Voltage (V ) ............................... –0.5V to +4.0V CC Input Voltage (V ) ............................ –0. LVDS Output Current (I )..................................±10mA OUT Input Current Source or Sink Current on (IN, /IN) ...............±50mA Lead Temperature (soldering, ...

Page 4

AC Electrical Characteristics V = +2.5V ±5 100Ω across the outputs Symbol Parameter f Maximum Frequency MAX t Propagation Delay PD t Within Device Skew Skew Part-to-Part Skew t Data Random Jitter Jitter Deterministic Jitter ...

Page 5

Functional Description Fail-Safe Input (FSI) The input includes a special failsafe circuit to sense the amplitude of the input signal and to latch the outputs when there is no input signal present, or when the amplitude of the input signal ...

Page 6

Typical Characteristics V = 2.5V, GND = 0V 100mV February 2006 = 100Ω across the outputs 25°C, unless otherwise stated. M9999-020706 hbwhelp@micrel.com or (408) 955-1690 ...

Page 7

Functional Characteristics V = 2.5V, GND = 0V 100mV February 2006 = 100Ω across the outputs 25°C, unless otherwise stated. M9999-020706 hbwhelp@micrel.com or (408) 955-1690 ...

Page 8

... LVDS driver and receiver. These outputs can drive AC- or DC- coupled differential signals. The SY89835U can drive long lengths of coaxial cables and FR4 traces. Table 1 below shows typical lengths of cables driven at different clock and data rates. ...

Page 9

Input Interface Applications Related Product and Support Documents Part Number Function SY89542U 2.5V, 3.2Gbps Dual, Differential 2:1 LVDS Multiplexer with Internal Termination SY89543L 3.3V, 3.2Gbps Dual, Differential 2:1 LVDS Multiplexer with Internal Termination SY89544U 2.5V, 3.2Gbps Differential 4:1 LVDS Multiplexer ...

Page 10

Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no ...

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