sy89834u Micrel Semiconductor, sy89834u Datasheet

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sy89834u

Manufacturer Part Number
sy89834u
Description
2.5v/3.3v Two Input, 1ghz Lvttl/cmo To-lvpecl 1 4 Fanout Buffer/ Translator With 2 1 Input Mux
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc.
Precision Edge is a registered trademark of Micrel, Inc.
Micro LeadFrame and MLF are trademarks of Amkor Technology, Inc.
August 2005
FEATURES
APPLICATIONS
Selects between two LVTTL/CMOS inputs and
provides 4 LVPECL output copies
Guaranteed AC performance over temperature
and voltage:
• DC-to >1.0GHz throughput
• <500ps propagation delay (IN-to-Q)
• < 20ps within-device skew
• < 225ps rise/fall time
Ultra-low jitter design:
• < 1ps
• < 1ps
• < 10ps
• < 10ps
Low voltage 2.5V and 3.3V supply operation
100K LVPECL outputs
Industrial temperature range: –40 C to +85 C
Includes a 2:1 MUX select input
Accepts single-ended TTL/CMOS inputs and
provides four LVPECL outputs
Available in 16-pin (3mm
Processor clock distribution/translation
SONET clock distribution/translation
Fibre Channel clock distribution/translation
Gigabit Ethernet clock distribution/translation
Single-ended ASIC-to-differential communication
IC signal translation
RMS
RMS
PP
PP
deterministic jitter
total jitter (clock)
cycle-to-cycle jitter
random jitter
3mm) MLF™ package
2.5V/3.3V TWO INPUT, 1GHz LVTTL/CMOS-
TO-LVPECL 1:4 FANOUT BUFFER/
TRANSLATOR WITH 2:1 INPUT MUX
1
LVPECL fanout buffer/translator optimized for high-speed
ultra-low skew applications. The input stage is designed to
accept two single-ended LVTTL/CMOS compatible signals
that feed into a 2:1 MUX. The selected input is translated
and distributed as four differential 100K LVPECL outputs.
Within device skew is guaranteed to be less than 20ps over
supply voltage and temperature.
levels. The internal threshold of the buffers is defined as
V
Edge
combination, consult Micrel's website at: www.micrel.com,
and choose from a comprehensive product line of high-
speed, low-skew fanout buffers, translators and clock
generators.
LVTTL/CMOS)
(LVTTL/CMOS)
(LVTTL/CMOS)
(LVTTL/CMOS)
CC
DESCRIPTION
FUNCTIONAL BLOCK DIAGRAM
The SY89834U is a high-speed, 1GHz LVTTL/CMOS-to-
The single-ended input buffers accept TTL/CMOS logic
The SY89834U is a part of Micrel's high-speed Precision
/2
®
.
family. For applications that require a different I/O
SEL
EN
IN1
IN2
MUX
1
0
hbwhelp@micrel.com or (408) 955-1690
D
Q
Precision Edge
1:4
Precision Edge
Precision Edge
SY89834U
M9999-080505
SY89834U
®
Q0
/Q0
Q1
/Q1
Q2
/Q2
Q3
/Q3
®
®

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sy89834u Summary of contents

Page 1

... The single-ended input buffers accept TTL/CMOS logic levels. The internal threshold of the buffers is defined The SY89834U is a part of Micrel's high-speed Precision ® Edge family. For applications that require a different I/O combination, consult Micrel's website at: www.micrel.com, and choose from a comprehensive product line of high- speed, low-skew fanout buffers, translators and clock generators ...

Page 2

... Range Marking MLF-16 Industrial 834U MLF-16 Industrial 834U MLF-16 Industrial 834U with Pb-Free bar line indicator MLF-16 Industrial 834U with Pb-Free bar line indicator = Electricals only hbwhelp@micrel.com or (408) 955-1690 ® SY89834U Lead Finish Sn-Pb Sn-Pb NiPdAu Pb-Free NiPdAu Pb-Free /2. HIGH at M9999-080505 ...

Page 3

... Typ Max V –1.145 V –1.020 –1.945 V –1.820 550 800 1050 1100 1600 2100 and JA hbwhelp@micrel.com or (408) 955-1690 ® SY89834U Units Units Units –0.895 V –1.695 values are JB M9999-080505 ...

Page 4

... Note 12 Input t /t 350ps, Note Note 14 and Note 15 Note 14 and Note 15 . MAX 23 –1 PRBS pattern. f (device), no more than one output edge in 10 MAX 4 ® Precision Edge SY89834U Min Typ Max Units 1.0 GHz 200 320 500 ps 200 320 500 ...

Page 5

... Figure 1a. Timing Diagram (EN, IN1, IN2 SWITCHOVER SWITCHOVER /Q Q Figure 1b. Timing Diagram (SEL) V OUT 5 Precision Edge OUT HIGH LOW V OUT V DIFF_OUT Figure 2b. Differential Swing M9999-080505 hbwhelp@micrel.com or (408) 955-1690 ® SY89834U ...

Page 6

... FREQUENCY (GHz unless otherwise stated. A Propagation Delay vs. Temperature 400 380 360 340 320 300 280 260 240 220 200 -50 -30 - TEMPERATURE ( C) 6 ® Precision Edge SY89834U M9999-080505 hbwhelp@micrel.com or (408) 955-1690 ...

Page 7

... Micrel, Inc. FUNCTIONAL CHARACTERISTICS V = 3.3V, GND = 0V –2V 155MHz Output TIME (1ns/div unless otherwise stated. A 1GHz Output TIME (200ps/div.) 7 Precision Edge SY89834U 622MHz Output TIME (321.9ps/div.) M9999-080505 hbwhelp@micrel.com or (408) 955-1690 ® ...

Page 8

... New Products + Termination App Note V CC 25k IN1 IN2 SEL EN GND Figure 3. Simplified TTL/CMOS Input Buffer Data Sheet Link http://www.micrel.com/product-info/products/sy89830u.shtml http://www.micrel.com/product-info/products/sy89831u.shtml http://www.micrel.com/product-info/products/sy89832u.shtml http://www.micrel.com/product-info/products/sy89833u.shtml http://www.amkor.com/products/notes-papers/ MLF-appnote-0301.pdf http://www.micrel.com/product-info/as/solutions.shtml 8 Precision Edge R R hbwhelp@micrel.com or (408) 955-1690 ® SY89834U M9999-080505 ...

Page 9

... For +2.5V systems +3.3V +3. 130 130 — Figure 4c. Terminating Unused LVPECL I 130 +3. — +3. “destination” C1 0.01µF (optional —1. +3. 1.6k hbwhelp@micrel.com or (408) 955-1690 Precision Edge ® SY89834U M9999-080505 ...

Page 10

... Exposed pads must be soldered to a ground for proper thermal management (408) 474-1000 FAX Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 10 Package EP- Exposed Pad Die http://www.micrel.com WEB hbwhelp@micrel.com or (408) 955-1690 ® Precision Edge SY89834U M9999-080505 ...

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