ics672-01 Integrated Device Technology, ics672-01 Datasheet

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ics672-01

Manufacturer Part Number
ics672-01
Description
Quadraclock?? Quadrature Delay Buffer
Manufacturer
Integrated Device Technology
Datasheet
QUADRACLOCK QUADRATURE DELAY BUFFER
Description
The ICS672-01/02 are zero delay buffers that generate four
output clocks whose phases are spaced at 90° intervals.
Based on IDT’s proprietary low jitter Phase-Locked Loop
(PLL) techniques, each device provides five low-skew
outputs, with clock rates up to 84 MHz for the ICS672-01
and up to 135 MHz for the ICS672-02. By providing outputs
delayed one quarter clock cycle, the device is useful for
systems requiring early or late clocks. The ICS672-01/02
include multiplier selections of x0.5, x1, x2, x3, x4, x5, or x6.
They also offer a mode to power-down all internal circuitry
and tri-state the outputs. In normal operation, output clock
FBCLK is tied to the FBIN pin.
IDT manufactures the largest variety of clock generators
and buffers, and is the largest clock supplier in the world.
Block Diagram
IDT™ / ICS™ QUADRACLOCK QUADRATURE DELAY BUFFER
S2:S0
FBIN
IN
3
Control
Logic
VDD
Power Down plus Tri-state
Quadrature
Generation
2
Multiplier
PLL
and
1
Features
GND
Packaged in 16-pin SOIC
Available in Pb (lead) free package
Input clock range from 5 MHz to 150 MHz (depends on
multiplier)
Clock outputs from up to 84 MHz (ICS672-01) and up to
135 MHz (ICS672-02)
Zero input-output delay
Integrated x0.5, x1, x2, x3, x4, x5, or x6 selections
Four accurate (<250 ps) outputs with 0°, 90°, 180°, and
270° phase shift from ICLK, and one FBCLK (0°)
Separate supply for output clocks from 2.5 V to 5 V
Full CMOS outputs (TTL compatible)
Tri-state mode for board-level testing
Includes Power-down for power savings
Advanced, low power, sub-micron CMOS process
3.3 V to 5 V operating voltage
Industrial temperature version available
3
VDDIO
External
Feedback
CLK0
CLK90
CLK180
CLK270
CLKFB
ICS672-01/02
ICS672-01/02
DATASHEET
REV H 051508

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ics672-01 Summary of contents

Page 1

... Packaged in 16-pin SOIC • Available in Pb (lead) free package • Input clock range from 5 MHz to 150 MHz (depends on multiplier) • Clock outputs from MHz (ICS672-01) and up to 135 MHz (ICS672-02) • Zero input-output delay • Integrated x0.5, x1, x2, x3, x4, x5 selections • ...

Page 2

... Select input 1. See table above. Select input 2. See table above. Connect to 3 5.0 V. Feedback clock input. in normal operation, connect to FBCLK. 2 ZERO DELAY BUFFER S1 S0 Output Clocks 0 0 Power-down + tri-state x0.5 ICS672-01/02 REV H 051508 ...

Page 3

... All output clocks will be a multiple of the input clock, as determined by the table on page 2. Refer to the illustrations in Figure 1 and Figure 2. FBCLK is connected to the feedback input (FBIN) to provide a zero delay through the ICS672-01/02. FBCLK has a 0° phase shift from ICLK. ...

Page 4

... QUADRACLOCK QUADRATURE DELAY BUFFER Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS672-01/02. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ...

Page 5

... ZERO DELAY BUFFER Min. Typ. Max ±50 7 Min. Typ. Max. Units 5 150 135 = -250 250 -300 300 75 150 Min. Typ. Max. Units 120 115 105 58 ICS672-01/02 Units MHz MHz MHz C/W C/W C/W C/W REV H 051508 ...

Page 6

... SEATING B PLANE C .10 (.004) 6 ZERO DELAY BUFFER Millimeters Min Max Min A 1.35 1.75 .0532 A1 0.10 0.25 .0040 B 0.33 0.51 .013 C 0.19 0.25 .0075 D 9.80 10.00 .3859 E 3.80 4.00 .1497 e 1.27 BASIC 0.050 BASIC H 5.80 6.20 .2284 h 0.25 0.50 .010 L 0.40 1.27 .016 ICS672-01/02 Inches Max .0688 .0098 .020 .0098 .3937 .1574 .2440 .020 .050 8 C REV H 051508 ...

Page 7

... SOIC Tubes 16-pin SOIC Tape and Reel 16-pin SOIC 7 ZERO DELAY BUFFER Temperature +70 C -40 to +85 C -40 to +85 C -40 to +85 C -40 to +85 C ICS672-01/02 REV H 051508 ...

Page 8

... ICS672-01/02 QUADRACLOCK QUADRATURE DELAY BUFFER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 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 ...

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