8440258AK-46LF

8440258AK-46LF Datasheet

ICS8440258-46

Part	Datasheet
8440258AK-46LF	8440258AK-46LF (pdf)

Related Parts	Information
8440258AK-46LFT	8440258AK-46LFT

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Crystal/LVCMOS-toLVDS/LVCMOS Frequency Synthesizer ICS8440258-46 PRELIMINARY DATA SHEET The ICS8440258-46 is an 8 output synthesizer optimized to generate Ethernet clocks. Using a 25MHz, 18pF parallel resonant crystal, the device will generate both 125MHz and 25MHz clocks with mixed LVDS and LVCMOS/LVTTL output logic. The ICS8440258-46 uses IDT’s 3RD generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Ethernet jitter requirements. The ICS8440258-46 is packaged in a small, 5mm x 5mm VFQFN package. Pin Assignment • Four differential LVDS outputs at 125MHz Two LVCMOS/LVTTL single-ended outputs at 125MHz Two LVCMOS/LVTTL single-ended outputs at 25MHz • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input • VCO range 490MHz - 680MHz • RMS phase jitter 125MHz, using a 25MHz crystal 1.875MHz - 20MHz 0.34ps typical • Full 2.5V supply mode • 0°C to 70°C ambient operating temperature • Available in both standard RoHS 5 and lead-free RoHS 6 packages XTAL_IN XTAL_OUT nXTAL_SEL REF_CLK MR VDD nPLL_SEL VDDA Q0 nQ0 GND Q1 nQ1 VDD Q2 nQ2 32 31 30 29 28 27 26 25 9 10 11 12 13 14 15 16 nc GND Q7 VDDO2 Q6 GND MR Pulldown Q3 nQ3 VDD GND Q4 VDDO1 Q5 GND ICS8440258-46 nPLL_SEL Pulldown 32-Lead VFQFN 5mm x 5mm x 0.925mm package body K Package Top View XTAL_IN 25MHz OSC 0 XTAL_OUT REF_CLK Pulldown nXTAL_SEL Pulldown Block Diagram Phase Detector 490-680MHz ÷25 The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization and/or qualification. Integrated Device Technology, Incorporated IDT reserves the right to change any circuitry or specifications without notice. 2010 Integrated Device Technology, Inc. ICS8440258-46 Preliminary Data Sheet Ordering Information Table Ordering Information Part/Order Number 8440258AK-46 8440258AK-46T 8440258AK-46LF 8440258AK-46LFT Marking ICS40258A46 ICS0258A46L Package 32 Lead VFQFN 32 Lead VFQFN “Lead-Free” 32 Lead VFQFN “Lead-Free” 32 Lead VFQFN Shipping Packaging Tray 2500 Tape & Reel Tray 2500 Tape & Reel Temperature 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C NOTE Parts that are ordered with an "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 ranges, 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. 2010 Integrated Device Technology, Inc. ICS8440258-46 Preliminary Data Sheet CRYSTAL/LVCMOS-TO-LVDS/LVCMOS FREQUENCY SYNTHESIZER We’ve Got Your Timing Solution 6024 Silver Creek Valley Road San Jose, California 95138 Sales 800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775 Technical Support +480-763-2056 DISCLAIMER Integrated Device Technology, Inc. IDT and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties. IDT’s products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third party owners. Copyright All rights reserved.

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Crystal/LVCMOS-toLVDS/LVCMOS Frequency Synthesizer

ICS8440258-46

PRELIMINARY DATA SHEET

The ICS8440258-46 is an 8 output synthesizer optimized to generate Ethernet clocks. Using a 25MHz, 18pF parallel resonant crystal, the device will generate both 125MHz and 25MHz clocks with mixed LVDS and LVCMOS/LVTTL output logic. The ICS8440258-46 uses IDT’s 3RD generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Ethernet jitter requirements. The ICS8440258-46 is packaged in a small, 5mm x 5mm VFQFN package.

Pin Assignment
• Four differential LVDS outputs at 125MHz

Two LVCMOS/LVTTL single-ended outputs at 125MHz Two LVCMOS/LVTTL single-ended outputs at 25MHz
• Selectable crystal oscillator interface or LVCMOS/LVTTL
single-ended input
• VCO range 490MHz - 680MHz
• RMS phase jitter 125MHz, using a 25MHz crystal
1.875MHz - 20MHz 0.34ps typical
• Full 2.5V supply mode
• 0°C to 70°C ambient operating temperature
• Available in both standard RoHS 5 and lead-free RoHS 6
packages

XTAL_IN XTAL_OUT nXTAL_SEL REF_CLK MR VDD nPLL_SEL VDDA

Q0 nQ0 GND

Q1 nQ1 VDD

Q2 nQ2
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
nc GND Q7 VDDO2 Q6 GND

MR Pulldown

Q3 nQ3 VDD GND Q4 VDDO1

Q5 GND

ICS8440258-46
nPLL_SEL Pulldown
32-Lead VFQFN 5mm x 5mm x 0.925mm
package body K Package Top View

XTAL_IN
25MHz

OSC 0

XTAL_OUT

REF_CLK Pulldown
nXTAL_SEL Pulldown

Block Diagram

Phase

Detector
490-680MHz
÷25

The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization and/or qualification. Integrated Device Technology, Incorporated IDT reserves the right to change any circuitry or specifications without notice.
2010 Integrated Device Technology, Inc.

ICS8440258-46 Preliminary Data Sheet
Ordering Information
Table Ordering Information

Part/Order Number 8440258AK-46 8440258AK-46T 8440258AK-46LF 8440258AK-46LFT

Marking ICS40258A46 ICS0258A46L

Package 32 Lead VFQFN 32 Lead VFQFN “Lead-Free” 32 Lead VFQFN “Lead-Free” 32 Lead VFQFN

Shipping Packaging Tray
2500 Tape & Reel Tray
2500 Tape & Reel

Temperature 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C

NOTE Parts that are ordered with an "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 ranges, 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.
2010 Integrated Device Technology, Inc.

ICS8440258-46 Preliminary Data Sheet

CRYSTAL/LVCMOS-TO-LVDS/LVCMOS FREQUENCY SYNTHESIZER

We’ve Got Your Timing Solution
6024 Silver Creek Valley Road San Jose, California 95138

Sales
800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775

Technical Support
+480-763-2056

DISCLAIMER Integrated Device Technology, Inc. IDT and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties.

IDT’s products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.

Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third party owners.

Copyright All rights reserved.

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 8440258AK-46LF Datasheet file may be downloaded here without warranties.

Datasheet ID: 8440258AK-46LF 637129