SY89426JC Micrel Inc, SY89426JC Datasheet

IC SYNTHESIZER CLK SONET 28-PLCC

SY89426JC

Manufacturer Part Number
SY89426JC
Description
IC SYNTHESIZER CLK SONET 28-PLCC
Manufacturer
Micrel Inc
Series
Precision Edge®r
Type
Clock/Frequency Synthesizerr
Datasheet

Specifications of SY89426JC

Pll
No
Input
TTL
Output
PECL, TTL
Number Of Circuits
1
Ratio - Input:output
1:2
Differential - Input:output
No/Yes
Frequency - Max
622.08MHz
Divider/multiplier
Yes/No
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-LCC (J-Lead)
Frequency-max
622.08MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Micrel, Inc.
Precision Edge is a registered trademark of Micrel, Inc.
ASSET is a trademark of Micrel, Inc.
M9999-112105
hbwhelp@micrel.com or (408) 955-1690
TYPICAL APPLICATION
FEATURES
Single chip source for 622.08MHz and 155.52MHz
clocks
622.08MHz output is differential PECL, 155.52MHz
output is single-ended PECL
TTL/CMOS compatible inputs and reference output
SONET compliant jitter performance ( 0.01UI)
Choice of three reference frequencies
Only 395mW (typ)
Complies with Bellcore, CCITT and ANSI standards
Single +5 volt power supply
Fully compatible with industry standard 10KH I/O
levels
Available in 28-pin PLCC package
CLOCK
0.1uF
IN
1000
FLTRN
RFCK
(TTL)
FLTRP
SEL39
(TTL)
SEL78
(TTL)
+5V
VCC
GND
SY89426
SONET OC-12/OC-3
CLOCK SYNTHESIZER
(TTL)
RST
VCCO
+5V
RETRFCK
1
CK622N
CK622P
(PECL)
(PECL)
CK155
DISC
(TTL)
is a SONET compliant clock generator providing
622.08MHz, 155.52MHz and retimed reference clock
outputs. The PLL produces low jitter OC-12/STS-12 and
OC-3/STS-3 rate clocks from an input reference clock of
38.88, 51.84, or 77.76MHz. Additionally, the input reference
clock is retimed and provided as a TTL/CMOS compatible
output, which may be disabled to minimize switching noise.
The SY89426 operates from a single +5 volt supply, and
requires only a simple series RC loop filter.
proprietary ASSET™ bipolar process has produced a clock
generator IC which exceeds applicable Bellcore and ANSI
specifications, while setting a new standard for performance
and flexibility.
(TTL)
DESCRIPTION
Micrel's SY89426 Multi-Output Phase Locked Loop (PLL)
Coupling Micrel's advanced PLL technology with our
+3V
+3V
50
2X 50
622.08MHz
CLOCK OUT
155.52MHz
CLOCK OUT
RETIMED
REFOUT
Precision Edge
Rev.: H
Issue Date: November 2005
Precision Edge
Precision Edge
SY89426
Amendment: /0
SY89426
®
®
®

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SY89426JC Summary of contents

Page 1

Micrel, Inc. FEATURES Single chip source for 622.08MHz and 155.52MHz clocks 622.08MHz output is differential PECL, 155.52MHz output is single-ended PECL TTL/CMOS compatible inputs and reference output SONET compliant jitter performance ( 0.01UI) Choice of three reference frequencies Only 395mW ...

Page 2

... CC V +5V for PECL outputs. CCO GND Ground (0 volts). 2 ® Precision Edge SY89426 Package Lead Marking Finish SY89426JC Sn-Pb SY89426JC Sn-Pb SY89426JY with Matte-Sn Pb-Free bar line indicator Pb-Free SY89426JY with Matte-Sn Pb-Free bar line indicator Pb-Free = Electricals only. A ...

Page 3

Micrel, Inc. FUNCTIONAL BLOCK DIAGRAM RFCK (TTL) SEL39 (TTL) SEL78 (TTL) REFERENCE FREQUENCY SELECTION SEL39 SEL78 NOTE: 1. Airflow greater than 500lfpm is maintained. M9999-112105 hbwhelp@micrel.com or (408) 955-1690 V GND CCA ...

Page 4

Micrel, Inc. ABSOLUTE MAXIMUM RATINGS Symbol V Power Supply CC V Input Voltage IN I Output Current OUT T Operating Temperature Range A T Lead Temperature (soldering, 20 sec.) LEAD T Storage Temperature Range store NOTES: 1. Permanent device damage ...

Page 5

Micrel, Inc. AC ELECTRICAL CHARACTERISTICS +5V 5%; GND = 0V CCO Parameter VCO Center Frequency Reference Clock (RFCK) Frequency Tolerance Reference Clock (RFCK) Input Duty Cycle Reference Clock (RETRFCK) Output Duty Cycle Acquisition Lock ...

Page 6

Micrel, Inc. JITTER GENERATION Jitter Generation Definition Bellcore TR-NWT-000499 (Issue 4), section 7.3.3 "Jitter generation is the process whereby jitter appears at the output port of an individual unit of digital equipment in the absence of applied input jitter." SONET ...

Page 7

Micrel, Inc. 28-PIN PLCC (J28-1) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed ...

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