83940BYLFT

83940BYLFT Datasheet

ICS83940

Part	Datasheet
83940BYLFT	83940BYLFT (pdf)

Related Parts	Information
83940BYLF	83940BYLF

PDF Datasheet Preview
Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015 ICS83940 The ICS83940 is a low skew, 1-to-18 LVPECL-to-LVCMOS/ LVTTL Fanout Buffer. The ICS83940 has twoselectable clock inputs. The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL input levels. The LVCMOS_CLK can accept LVCMOS or LVTTL input levels. The low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω series or parallel terminated transmission lines. The ICS83940 is characterized at full 3.3V, full 2.5V and mixed 3.3V input and 2.5V output operating supply modes. Guaranteed output and part-to-part skew characteristics make the ICS83940 ideal for those clock distribution applications demanding well defined performance and repeatability. • Eighteen LVCMOS/LVTTL outputs, 16Ω typical output impedance • Selectable LVCMOS_CLK or LVPECL clock inputs • PCLK, nPCLK supports the following input types: LVPECL, CML, SSTL • LVCMOS_CLK accepts the following input levels LVCMOS or LVTTL • Maximum output frequency 250MHz • Output skew 150ps maximum • Part to part skew 750ps maximum • Full 3.3V or 2.5V supply modes • 0°C to 70°C ambient operating temperature • Industrial temperature information available upon request • Lead-Free package fully RoHS compliant • For New Designs Use 83940DYLF or 83940DYILF BLOCK DIAGRAM PIN ASSIGNMENT GND Q5 Q4 Q3 VDDO Q2 Q1 Q0 CLK_SEL PCLK nPCLK LVCMOS_CLK 18 Q0:Q17 GND LVCMOS_CLK CLK_SEL PCLK nPCLK VDD VDDO 32 31 30 29 28 27 26 25 ICS83940 21 9 10 11 12 13 14 15 16 Q6 Q7 Q8 VDD Q9 Q10 Q11 GND VDDO Q12 Q13 Q14 GND Q15 Q16 32-Lead LQFP 7mm x 7mm x 1.4mm package body Y Pacakge Top View 83940BY Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015 ICS83940 TABLE PIN DESCRIPTIONS Number Name Type 1, 2, 12, 17, 25 Power Power supply ground. LVCMOS_CLK Input Pulldown Clock input. LVCMOS / LVTTL interface levels. TABLE ORDERING INFORMATION Part/Order Number 83940BY 83940BYT 83940BYLF 83940BYLFT Marking ICS83940BY ICS83940BYLF Package 32 Lead LQFP 32 Lead LQFP 32 Lead "Lead-Free" LQFP 32 Lead "Lead-Free" LQFP Shipping Packaging Tray 1000 Tape & Reel Tray 1000 Tape & Reel Temperature 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Inc. IDT assumes no responsibility for either its use or for 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 and industrial applications. Any other applications such as those requiring 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. 83940BY Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015 ICS83940 Table T2 Page 2 1 2 7 8 1 11 11 13 1 Description of Change CPD Value changed from 10pF to 13pF for 3.47V and added 11pF for 2.625V In Features section, first bullet changed Output Impedance from 23Ω to T1 Pin Description, changed Q outputs description from 23Ω to 16Ω output impedanace. Updated format. 3V AC Characteristics - corrected Part-to-Part Skew f<150MHz unit from ps to ns. Updated Single Ended Signal Driving Differential Input diagram. Added LVPECL Input Interface section. Features Section - added Lead-Free bullet. Ordering Information Table - added Lead-Free part number. Updated datasheet's header/footer with IDT from ICS. Removed "ICS" prefix from Part/Order Number column. Added Contact Page. Not Recommended For New Designs For new designs use 83940D Product Discontinuation Notice - Last time buy expires January 27, 2015, PDN# CQ-14-02 Date 4/25/02 5/23/02 12/12/02 3/17/04 12/14/04 11/17/10 5/21/13 1/31/14 83940BY Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015 ICS83940 We’ve Got Your Timing Solution. 6024 Silver Creek Valley Road San Jose, CA 95138 Sales 800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775 Tech 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 applications involving extreme environmental conditions or 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. 83940BY

PDF Datasheet Preview

Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer

PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015

ICS83940

The ICS83940 is a low skew, 1-to-18 LVPECL-to-LVCMOS/ LVTTL Fanout Buffer. The ICS83940 has twoselectable clock inputs. The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL input levels. The LVCMOS_CLK can accept LVCMOS or LVTTL input levels. The low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω series or parallel terminated transmission lines.

The ICS83940 is characterized at full 3.3V, full 2.5V and mixed 3.3V input and 2.5V output operating supply modes. Guaranteed output and part-to-part skew characteristics make the ICS83940 ideal for those clock distribution applications demanding well defined performance and repeatability.
• Eighteen LVCMOS/LVTTL outputs, 16Ω typical output impedance
• Selectable LVCMOS_CLK or LVPECL clock inputs
• PCLK, nPCLK supports the following input types:

LVPECL, CML, SSTL
• LVCMOS_CLK accepts the following input levels LVCMOS or LVTTL
• Maximum output frequency 250MHz
• Output skew 150ps maximum
• Part to part skew 750ps maximum
• Full 3.3V or 2.5V supply modes
• 0°C to 70°C ambient operating temperature
• Industrial temperature information available upon request
• Lead-Free package fully RoHS compliant
• For New Designs Use 83940DYLF or 83940DYILF

BLOCK DIAGRAM

PIN ASSIGNMENT

GND Q5 Q4 Q3

VDDO Q2 Q1 Q0

CLK_SEL

PCLK
nPCLK

LVCMOS_CLK
18 Q0:Q17

GND LVCMOS_CLK CLK_SEL PCLK nPCLK

VDD VDDO
32 31 30 29 28 27 26 25

ICS83940 21
9 10 11 12 13 14 15 16

Q6 Q7 Q8 VDD Q9 Q10 Q11 GND

VDDO Q12 Q13 Q14 GND Q15 Q16
32-Lead LQFP 7mm x 7mm x 1.4mm package body

Y Pacakge Top View
83940BY

Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer

PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015

ICS83940

TABLE PIN DESCRIPTIONS

Number

Name

Type
1, 2, 12, 17, 25

Power

Power supply ground.

LVCMOS_CLK

Input Pulldown Clock input. LVCMOS / LVTTL interface levels.
TABLE ORDERING INFORMATION

Part/Order Number 83940BY 83940BYT
83940BYLF 83940BYLFT

Marking ICS83940BY ICS83940BYLF

Package 32 Lead LQFP 32 Lead LQFP 32 Lead "Lead-Free" LQFP 32 Lead "Lead-Free" LQFP

Shipping Packaging Tray
1000 Tape & Reel Tray
1000 Tape & Reel

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

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Inc. IDT assumes no responsibility for either its use or for 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 and industrial applications. Any other applications such as those requiring 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.
83940BY

Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer

PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015

ICS83940

Table T2

Page 2 1 2
7 8 1 11
11 13 1

Description of Change
CPD Value changed from 10pF to 13pF for 3.47V and added 11pF for 2.625V In Features section, first bullet changed Output Impedance from 23Ω to T1 Pin Description, changed Q outputs description from 23Ω to 16Ω output impedanace. Updated format. 3V AC Characteristics - corrected Part-to-Part Skew f<150MHz unit from ps to ns. Updated Single Ended Signal Driving Differential Input diagram. Added LVPECL Input Interface section. Features Section - added Lead-Free bullet. Ordering Information Table - added Lead-Free part number. Updated datasheet's header/footer with IDT from ICS. Removed "ICS" prefix from Part/Order Number column. Added Contact Page. Not Recommended For New Designs For new designs use 83940D Product Discontinuation Notice - Last time buy expires January 27, 2015, PDN# CQ-14-02

Date 4/25/02 5/23/02 12/12/02
3/17/04
12/14/04 11/17/10 5/21/13 1/31/14
83940BY

Low Skew, 1-to-18 LVPECL-toLVCMOS/LVTTL Fanout Buffer

PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015

ICS83940

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

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

Tech 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 applications involving extreme environmental conditions or 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.
83940BY

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 83940BYLFT Datasheet file may be downloaded here without warranties.

Datasheet ID: 83940BYLFT 637080