ICS87931BYILFT

ICS87931BYILFT Datasheet

ICS87931I

Part	Datasheet
ICS87931BYILFT	ICS87931BYILFT (pdf)

Related Parts	Information
ICS87931BYILF	ICS87931BYILF

PDF Datasheet Preview
Low Skew, 1-to-6, LVCMOS/LVTTL Clock Multiplier/Zero Delay Buffer ICS87931I The ICS87931I is a low voltage, low skew LVCMOS/LVTTL Clock Multiplier/Zero Delay Buffer. With output frequencies up to 150MHz, the ICS87931I is targeted for high performance clock applications. Along with a fully integrated PLL, the ICS87931I contains frequency configurable outputs and an external feedback input for regenerating clocks with “zero delay”. Selectable clock inputs, CLK1 and differential CLK0, nCLK0 support redundant clock applications. The CLK_SEL input determines which reference clock is used. The output divider values of Bank A, B and C are controlled by the DIV_SELA, DIV_SELB and DIV_SELC, respectively. For test and system debug purposes, the PLL_SEL input allows the PLL to be bypassed. When LOW, the nMR input resets the internal dividers and forces the outputs to the high impedance state. The effective fanout of the ICS87931I can be increased to 12 by utilizing the ability of each output to drive two series terminated transmission lines. • Fully integrated PLL • Six LVCMOS/LVTTL outputs, 7Ω typical output impedance • Selectable differential CLK0, nCLK0 or LVCMOS/LVTTL clock for redundant clock applications • Maximum output frequency 150MHz • VCO range 220MHz to 480MHz • External feedback for “zero delay” clock regeneration • Output skew, Same Frequency 300ps maximum • Output skew, Different Frequency 400ps maximum • Cycle-to-cycle jitter 100ps maximum • 3.3V supply voltage • -40°C to 85°C ambient operating temperature PIN ASSIGNMENT GND QA1 QA0 VDDO DIV_SELA DIV_SELB DIV_SELC BLOCK DIAGRAM POWER_DN Pullup PLL_SEL Pullup CLK_SEL Pulldown CLK1 Pullup nc VDDA POWER_DN CLK1 nMR CLK0 nCLK0 GND 32 31 30 29 28 27 26 25 3 ICS87931I 22 32-Lead LQFP 5 7mm x 7mm x 1.4mm 20 package body 19 Y package Top View 9 10 11 12 13 14 15 16 GND QB0 QB1 VDDO EXTFB_SEL CLK_SEL PLL_SEL nc GND QC1 QC0 VDDO EXT_FB CLK_EN1 CLK_EN0 nc CLK0 Pullup nCLK0 None EXTFB_SEL Pulldown EXT_FB Pullup DIV_SELA Pulldown DIV_SELB Pulldown CLK_EN0 Pullup CLK_EN1 Pullup DIV_SELC Pulldown nMR Pullup PHASE DETECTOR 1 ÷2 1 1 ÷8 POWER-ON RESET DISABLE LOGIC ÷2/÷4 ÷2/÷4 ÷4/÷6 QA0 QA1 QB0 QB1 QC0 QC1 2010 Integrated Device Technology, Inc. ICS87931I LOW SKEW, 1-TO-6, LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER TABLE PIN DESCRIPTIONS Number Name TABLE ORDERING INFORMATION Part/Order Number 87931BYI 87931BYIT 87931BYILF 87931BYILFT Marking ICS87931BI ICS87931BYIL Package 32 Lead LQFP 32 Lead LQFP Lead-Free, 32 Lead LQFP Lead-Free, 32 Lead LQFP Packaging Tray 1000 Tape & Reel Tray 1000 Tape & Reel Temperature -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated 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 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. ICS87931I LOW SKEW, 1-TO-6, LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER Page 6 8 9 14 Description of Change AC Characteristics Table - added thermal note. Updated Wiring the Differential Input to Accept Single-Ended Levels section. Updated Differential Clock Input Interface section. Ordering Information Table - added LF part numbers and marking. Deleted "ICS" prefix from Part/Order Number column. Changed from ICS to IDT format header/foot. Input Reference Frequency Table - added to table description "EXTFB_SEL = Date 2/23/10 8/25/10 2010 Integrated Device Technology, Inc. ICS87931I LOW SKEW, 1-TO-6, LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER 6024 Silver Creek Valley Road San Jose, CA 95138 Sales 800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775 Techical 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 performace, 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 suitablity 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 Techology, 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. 2010 Integrated Device Technology, Inc.

PDF Datasheet Preview

Low Skew, 1-to-6, LVCMOS/LVTTL Clock Multiplier/Zero Delay Buffer

ICS87931I

The ICS87931I is a low voltage, low skew LVCMOS/LVTTL Clock Multiplier/Zero Delay Buffer. With output frequencies up to 150MHz, the ICS87931I is targeted for high performance clock applications. Along with a fully integrated PLL, the ICS87931I contains frequency configurable outputs and an external feedback input for regenerating clocks with “zero delay”.

Selectable clock inputs, CLK1 and differential CLK0, nCLK0 support redundant clock applications. The CLK_SEL input determines which reference clock is used. The output divider values of Bank A, B and C are controlled by the DIV_SELA, DIV_SELB and DIV_SELC, respectively.

For test and system debug purposes, the PLL_SEL input allows the PLL to be bypassed. When LOW, the nMR input resets the internal dividers and forces the outputs to the high impedance state.

The effective fanout of the ICS87931I can be increased to 12 by utilizing the ability of each output to drive two series terminated transmission lines.
• Fully integrated PLL
• Six LVCMOS/LVTTL outputs, 7Ω typical output impedance
• Selectable differential CLK0, nCLK0 or LVCMOS/LVTTL
clock for redundant clock applications
• Maximum output frequency 150MHz
• VCO range 220MHz to 480MHz
• External feedback for “zero delay” clock regeneration
• Output skew, Same Frequency 300ps maximum
• Output skew, Different Frequency 400ps maximum
• Cycle-to-cycle jitter 100ps maximum
• 3.3V supply voltage
• -40°C to 85°C ambient operating temperature

PIN ASSIGNMENT

GND QA1 QA0 VDDO DIV_SELA DIV_SELB DIV_SELC

BLOCK DIAGRAM

POWER_DN Pullup PLL_SEL Pullup

CLK_SEL Pulldown CLK1 Pullup
nc VDDA POWER_DN CLK1 nMR CLK0 nCLK0 GND
32 31 30 29 28 27 26 25
3 ICS87931I 22
32-Lead LQFP
5 7mm x 7mm x 1.4mm 20
package body 19

Y package

Top View
9 10 11 12 13 14 15 16

GND QB0 QB1 VDDO EXTFB_SEL CLK_SEL PLL_SEL nc

GND QC1 QC0 VDDO EXT_FB CLK_EN1 CLK_EN0 nc

CLK0 Pullup nCLK0 None EXTFB_SEL Pulldown EXT_FB Pullup

DIV_SELA Pulldown DIV_SELB Pulldown CLK_EN0 Pullup CLK_EN1 Pullup DIV_SELC Pulldown
nMR Pullup

PHASE DETECTOR
1 ÷2 1
1 ÷8

POWER-ON RESET

DISABLE LOGIC
÷2/÷4 ÷2/÷4 ÷4/÷6

QA0 QA1 QB0 QB1

QC0 QC1
2010 Integrated Device Technology, Inc.

ICS87931I

LOW SKEW, 1-TO-6, LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER

TABLE PIN DESCRIPTIONS

Number

Name
TABLE ORDERING INFORMATION

Part/Order Number 87931BYI 87931BYIT
87931BYILF 87931BYILFT

Marking ICS87931BI ICS87931BYIL

Package 32 Lead LQFP 32 Lead LQFP Lead-Free, 32 Lead LQFP Lead-Free, 32 Lead LQFP

Packaging Tray
1000 Tape & Reel Tray
1000 Tape & Reel

Temperature -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated 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 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.

ICS87931I

LOW SKEW, 1-TO-6, LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER

Page 6 8 9 14
Description of Change AC Characteristics Table - added thermal note. Updated Wiring the Differential Input to Accept Single-Ended Levels section. Updated Differential Clock Input Interface section. Ordering Information Table - added LF part numbers and marking. Deleted "ICS" prefix from Part/Order Number column. Changed from ICS to IDT format header/foot. Input Reference Frequency Table - added to table description "EXTFB_SEL =

Date 2/23/10 8/25/10
2010 Integrated Device Technology, Inc.

ICS87931I

LOW SKEW, 1-TO-6, LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER
6024 Silver Creek Valley Road San Jose, CA 95138

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

Techical 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 performace, 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 suitablity 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 Techology, 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.
2010 Integrated Device Technology, Inc.

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 ICS87931BYILFT Datasheet file may be downloaded here without warranties.

Datasheet ID: ICS87931BYILFT 637202