840021AGLFT

840021AGLFT Datasheet

ICS840021

Part	Datasheet
840021AGLFT	840021AGLFT (pdf)

Related Parts	Information
840021AGLF	840021AGLF

PDF Datasheet Preview
FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR ICS840021 The ICS840021 is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM HiPerClockS family of high performance devices from IDT. The ICS840021 uses a 25MHz crystal to synthesize 125MHz. The ICS840021 has excellent phase jitter performance, over the 1.875MHz 20MHz integration range. The ICS840021 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. • One LVCMOS/LVTTL output, output impedance • Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal • Output frequency 125MHz • VCO range 560MHz to 680MHz • RMS phase jitter 125MHz, using a 25MHz crystal 1.875MHz - 20MHz 0.34ps typical 3.3V • RMS phase noise at 125MHz typical • Phase noise: Offset Noise Power 100Hz dBc/Hz 1kHz dBc/Hz 10kHz dBc/Hz 100Hz dBc/Hz • 3.3V operating supply • 0°C to 70°C ambient operating temperature • Available in both standard RoHS 5 and lead-free RoHS 6 packages Block Diagram OE Pullup 25MHz XTAL_IN Phase XTAL_OUT Detector ÷25 fixed Pin Assignment VDDA 1 OE 2 XTAL_OUT 3 XTAL_IN 4 8 VDD 7 Q0 6 GND 5 RESERVED ICS840021 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body Ordering Information Table Ordering Information Part/Order Number 840021AG 840021AGT 840021AGLF 840021AGLFT Marking 021AG 021AL Package 8 Lead TSSOP 8 Lead TSSOP “Lead-Free” 8 Lead TSSOP “Lead-Free” 8 Lead TSSOP Shipping Packaging Tube 2500 Tape & Reel Tube 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. IDT / ICS LVCMOS CLOCK GENERATOR ICS840021 FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR T10 A Page 10 3 8 1 10 8 Description of Change Ordering Information Table - correct count from 154 to Absolute Maximum Ratings - corrected Package Thermal Impedance air flow. Corrected air flow in table. Features section - added Lead-free bullet. Ordering Information Table - added lead-free part number and marking. Added LVCMOS to XTAL Interface section. Changed formatting throughout data sheet. Pin Assignment - changed pin 5 from nc to Reserved. Pin Description Table - changed pin 5 from nc to Reserved. Date 10/14/04 11/30/04 10/7/05 1/10/09 4/15/09 IDT / ICS LVCMOS CLOCK GENERATOR ICS840021 FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR Contact Information: Sales 800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775 IDT Technical Support +480-763-2056 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800-345-7015 inside USA +408-284-8200 outside USA 2009 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

FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR

ICS840021

The ICS840021 is a Gigabit Ethernet Clock

Generator and a member of the HiPerClocksTM

HiPerClockS family of high performance devices from IDT. The

ICS840021 uses a 25MHz crystal to synthesize
125MHz. The ICS840021 has excellent phase jitter
performance, over the 1.875MHz 20MHz integration range. The

ICS840021 is packaged in a small 8-pin TSSOP, making it ideal for
use in systems with limited board space.
• One LVCMOS/LVTTL output, output impedance
• Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
• Output frequency 125MHz
• VCO range 560MHz to 680MHz
• RMS phase jitter 125MHz, using a 25MHz crystal
1.875MHz - 20MHz 0.34ps typical 3.3V
• RMS phase noise at 125MHz typical
• Phase noise:

Offset

Noise Power
100Hz dBc/Hz
1kHz dBc/Hz
10kHz dBc/Hz
100Hz dBc/Hz
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Available in both standard RoHS 5 and lead-free RoHS 6
packages

Block Diagram

OE Pullup
25MHz

XTAL_IN

Phase

XTAL_OUT

Detector
÷25 fixed

Pin Assignment

VDDA 1 OE 2

XTAL_OUT 3 XTAL_IN 4
8 VDD 7 Q0 6 GND 5 RESERVED

ICS840021
8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body
Ordering Information
Table Ordering Information

Part/Order Number 840021AG 840021AGT 840021AGLF 840021AGLFT

Marking 021AG 021AL

Package 8 Lead TSSOP 8 Lead TSSOP “Lead-Free” 8 Lead TSSOP “Lead-Free” 8 Lead TSSOP

Shipping Packaging Tube
2500 Tape & Reel Tube
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.

IDT / ICS LVCMOS CLOCK GENERATOR

ICS840021 FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR

T10 A

Page 10 3 8 1 10 8

Description of Change
Ordering Information Table - correct count from 154 to

Absolute Maximum Ratings - corrected Package Thermal Impedance air flow. Corrected air flow in table.
Features section - added Lead-free bullet. Ordering Information Table - added lead-free part number and marking.

Added LVCMOS to XTAL Interface section. Changed formatting throughout data sheet.

Pin Assignment - changed pin 5 from nc to Reserved. Pin Description Table - changed pin 5 from nc to Reserved.

Date 10/14/04 11/30/04 10/7/05 1/10/09 4/15/09

IDT / ICS LVCMOS CLOCK GENERATOR

ICS840021 FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR

Contact Information:

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

Technical Support
+480-763-2056

Corporate Headquarters

Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800-345-7015 inside USA +408-284-8200 outside USA
2009 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 840021AGLFT Datasheet file may be downloaded here without warranties.

Datasheet ID: 840021AGLFT 637086