ICS557G-05A

ICS557G-05A Datasheet

ICS557-05A

Part	Datasheet
ICS557G-05A	ICS557G-05A (pdf)

Related Parts	Information
ICS557G-05AT	ICS557G-05AT

PDF Datasheet Preview
QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE DATASHEET ICS557-05A The ICS557-05A is a spread-spectrum clock generator that supports PCI-Express requirements. It is used in PC or embedded systems to substantially reduce electro-magnetic interference EMI . The device provides four differential HCSL or LVDS high-frequency outputs with spread spectrum capability. The output frequency and spread type are selectable using external pins. • Packaged in 20-pin TSSOP • Available in RoHS 5 green or RoHS 6 green and lead free complaint package • Supports PCI-Express applications • Four differential spread spectrum clock outputs • Spread spectrum for EMI reduction • Uses external 25 MHz clock or crystal input • Power down pin turns off chip • OE control tri-states outputs • Spread and frequency selection via external pins • Spread Bypass option available • Industrial temperature range available Block Diagram VDD 2 3 SEL[2:0] 25 MHz crystal or clock Optional tuning crystal capacitors Spread Spectrum/ Output clock selection Clock Oscillator Spread Spectrum Circuitry PLL Clock Synthesis 2 GND Rr IREF CLKOUTA CLKOUTA CLKOUTB CLKOUTB CLKOUTC CLKOUTD IDT / ICS QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE ICS557-05A QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE Pin Assignment VDDXD GNDXD IREF CLKA CLKA CLKB CLKB GNDODA VDDODA CLKC CLKC CLKD CLKD 20-pin 173 mil TSSOP Ordering Information Part / Order Number ICS557G-05A ICS557G-05ATR ICS557G-05ALF ICS557G-05ALFTR ICS557GI-05A ICS557GI-05ATR ICS557GI-05ALF ICS557GI-05ALFTR Marking ICS557G-05A ICS557G-05A 557G-05ALF 557G-05ALF 557GI-05A 557GI-05A 557GI-05AL 557GI-05AL Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Package 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP Temperature 0 to +70°C 0 to +70°C 0 to +70°C 0 to +70°C -40 to +85°C -40 to +85°C -40 to +85°C -40 to +85°C Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT / ICS QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE ICS557-05A QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE PCIE SSCG Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support 408-284-4522 Corporate Headquarters Integrated Device Technology, Inc. 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

PDF Datasheet Preview

QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE

DATASHEET

ICS557-05A

The ICS557-05A is a spread-spectrum clock generator that supports PCI-Express requirements. It is used in PC or embedded systems to substantially reduce electro-magnetic interference EMI . The device provides four differential HCSL or LVDS high-frequency outputs with spread spectrum capability. The output frequency and spread type are selectable using external pins.
• Packaged in 20-pin TSSOP
• Available in RoHS 5 green or RoHS 6 green and lead
free complaint package
• Supports PCI-Express applications
• Four differential spread spectrum clock outputs
• Spread spectrum for EMI reduction
• Uses external 25 MHz clock or crystal input
• Power down pin turns off chip
• OE control tri-states outputs
• Spread and frequency selection via external pins
• Spread Bypass option available
• Industrial temperature range available

Block Diagram

VDD 2
3 SEL[2:0]
25 MHz
crystal or
clock

Optional tuning crystal capacitors

Spread Spectrum/

Output clock selection

Clock Oscillator

Spread Spectrum Circuitry

PLL Clock Synthesis
2 GND

Rr IREF

CLKOUTA

CLKOUTA CLKOUTB

CLKOUTB CLKOUTC CLKOUTD

IDT / ICS QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE

ICS557-05A QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE

Pin Assignment

VDDXD

GNDXD

IREF

CLKA

CLKA

CLKB

CLKB

GNDODA

VDDODA

CLKC

CLKC

CLKD

CLKD
20-pin 173 mil TSSOP
Ordering Information

Part / Order Number

ICS557G-05A ICS557G-05ATR ICS557G-05ALF ICS557G-05ALFTR ICS557GI-05A ICS557GI-05ATR ICS557GI-05ALF ICS557GI-05ALFTR

Marking

ICS557G-05A ICS557G-05A 557G-05ALF 557G-05ALF
557GI-05A 557GI-05A 557GI-05AL 557GI-05AL

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel

Tubes Tape and Reel

Tubes Tape and Reel

Package
20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP 20-pin TSSOP

Temperature
0 to +70°C 0 to +70°C 0 to +70°C 0 to +70°C -40 to +85°C -40 to +85°C -40 to +85°C -40 to +85°C

Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

IDT / ICS QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE

ICS557-05A QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE

PCIE SSCG

Innovate with IDT and accelerate your future networks. Contact:

For Sales
800-345-7015 408-284-8200 Fax 408-284-2775

For Tech Support
408-284-4522

Corporate Headquarters

Integrated Device Technology, Inc.
2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ICS557G-05A Datasheet file may be downloaded here without warranties.

Datasheet ID: ICS557G-05A 637014