sy89830u Micrel Semiconductor, sy89830u Datasheet

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sy89830u

Manufacturer Part Number
sy89830u
Description
Sy89830u 2.5v/3.3/5v 2.5ghz 1 4 Pecl/ecl Clock Driver With 2 1 Differential Input Mux
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc.
Precision Edge is a registered trademark of Micrel, Inc.
M9999-110705
hbwhelp@micrel.com or (408) 955-1690
FEATURES
Guaranteed AC parameters over temp/voltage:
• > 2.5GHz f
• < 25ps within-device skew
• < 225ps t
• < 450ps prop delay
Low jitter design:
• < 1ps
• < 15ps
2:1 Differential MUX input
Flexible supply voltage: 2.5V/3.3V/5V
Wide operating temperature range: –40 C to +85 C
100K ECL compatible outputs
Inputs accept PECL/LVPECL/ECL/HSTL logic levels
Available in a 16-pin TSSOP package
RMS
PP
r
total jitter
/t
cycle-to-cycle jitter
MAX
f
time
2.5V/3.3/5V 2.5GHz 1:4 PECL/ECL
CLOCK DRIVER WITH 2:1
DIFFERENTIAL INPUT MUX
1
1:4 fanout buffer optimized for ultra-low skew applications.
Within device skew is guaranteed to be less than 25ps over
temperature and supply voltage. The wide supply voltage
operation allows this fanout buffer to operate in 2.5V, 3.3V,
and 5V systems.
ideal solution for redundant clock switchover applications.
If only one input pair is used, the other pair may be left
floating. In addition, this device includes a synchronous
enable pin that forces the outputs into a fixed logic state.
Enable or disable state is initiated only after the outputs are
in a LOW state, thus eliminating the possibility of a “runt”
clock pulse.
compatible. Differential 10K ECL logic can interface directly
into the SY89830U inputs.
edge timing and distribution family. For applications that
require a different I/O combination, consult the Micrel website
at www.micrel.com, and choose from a comprehensive
product line of high-speed, low-skew fanout buffers,
translators, and clock generators.
DESCRIPTION
The SY89830U is a high-speed, 2.5GHz differential PECL
The SY89830U features a 2:1 input MUX, making it an
The SY89830U I/O are fully differential and 100K ECL
The SY89830U is part of Micrel’s high-speed precision
Precision Edge
Rev.: E
Issue Date: November 2005
Precision Edge
Precision Edge
SY89830U
Amendment: /0
SY89830U
®
®
®

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sy89830u Summary of contents

Page 1

... The wide supply voltage operation allows this fanout buffer to operate in 2.5V, 3.3V, and 5V systems. The SY89830U features a 2:1 input MUX, making it an ideal solution for redundant clock switchover applications. If only one input pair is used, the other pair may be left floating. In addition, this device includes a synchronous enable pin that forces the outputs into a fixed logic state ...

Page 2

... Precision Edge (1) Package Type Range Marking Industrial 89830U Industrial 89830U Industrial 89830U with Pb-Free bar line indicator Pb-Free Industrial 89830U with Pb-Free bar line indicator Pb-Free = Electricals only –2V. For CC –2V. CC ® SY89830U Lead Finish Sn-Pb Sn-Pb NiPdAu NiPdAu pull-down will OUT ...

Page 3

... A — 0.5 — — A — –150 — — A — — — — pF ® SY89830U Unit C/W C/W Condition ...

Page 4

... C A Max. Min. Typ. Max. Unit 3375 3055 — 3375 mV 4120 3775 — 4120 mV 3305 3055 3180 3305 mV 4105 3855 3980 4105 mV V 1.2 — ® SY89830U Condition Condition Condition ...

Page 5

... V –895 –1145 –1020 –895 0.0 V +1.2 — Typ. Max. Min. Typ. — — 1200 — — 400 — — ® SY89830U Condition –2V CC –2V CC Condition –2V CC –2V CC Max. Unit — mV 400 mV ...

Page 6

... T JITTER_CC 12 output edges will deviate by more ® SY89830U Unit — GHz — ps 450 ps — ps — ps 425 ps — ps 450 150 ps 450 ps — ps — RMS — ...

Page 7

... Propagation Delay vs. Temperature 500 475 3.3V CC 450 V = 800mV IN 425 400 375 350 325 300 -40 - 100 TEMPERATURE ( C) t SKEW vs. Temperature 3. 800mV -40 - 100 TEMPERATURE ( C) 7 ® Precision Edge SY89830U ...

Page 8

... Output 3. GND 800mV TIME (178ps/div.) M9999-110705 hbwhelp@micrel.com or (408) 955-1690 2.5GHz Output 3. GND 800mV TIME (72ps/div.) 8 Precision Edge 1.5GHz Output = 3.3V CC GND EE = 800mV IN TIME (96ps/div.) ® SY89830U ...

Page 9

... Figure 2. Three-Resistor “Y–Termination” . For +3.3V systems For +5V systems +3.3V +3. +3.3V 130 1k 130 —2V 1. Figure 3. Terminating Unused I/O 9 Precision Edge +3. — +3.3V “destination” (Optional 110 . —1. +3.3V ® SY89830U ...

Page 10

... Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify M9999-110705 hbwhelp@micrel.com or (408) 955-1690 + 1 (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 10 Precision Edge Rev. 01 http://www.micrel.com ® SY89830U ...

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