ICS345RP IDT, Integrated Device Technology Inc, ICS345RP Datasheet

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ICS345RP

Manufacturer Part Number
ICS345RP
Description
IC VERSACLOCK SYNTHESIZER 20QSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock/Frequency Synthesizerr
Datasheet

Specifications of ICS345RP

Pll
Yes with Bypass
Input
Clock, Crystal
Output
LVCMOS
Number Of Circuits
1
Ratio - Input:output
1:9
Differential - Input:output
No/No
Frequency - Max
200MHz
Divider/multiplier
No/Yes
Voltage - Supply
3.15 V ~ 3.45 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
20-QSOP
Frequency-max
200MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
345RP

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ICS345RPLF
Manufacturer:
IDT
Quantity:
165
Part Number:
ICS345RPLF
Manufacturer:
ICS
Quantity:
20 000
TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER ICS345
Description
The ICS345 field programmable clock synthesizer
generates up to nine high-quality, high-frequency clock
outputs including multiple reference clocks from a
low-frequency crystal or clock input. It is designed to
replace crystals and crystal oscillators in most electronic
systems.
Using IDT’s VersaClock
outputs, the ICS345 contains a One-Time Programmable
(OTP) ROM to allow field programmability. Programming
features include eight selectable configuration registers, up
to two sets of four low-skew outputs, and optional Spread
Spectrum outputs.
Using Phase-Locked Loop (PLL) techniques, the device
runs from a standard fundamental mode, inexpensive
crystal, or clock. It can replace multiple crystals and
oscillators, saving board space and cost.
The ICS345 is also available in factory programmed custom
versions for high-volume applications.
Block Diagram
IDT™ / ICS™ TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER 1
TM
S 2:S 0
E xternal capacitors are
required w ith a crystal input.
software to configure PLLs and
C rystal or
clock input
X 1/IC LK
X 2
3
O scillator
V alues
C rystal
R O M
O T P
w ith
P LL
P LL1 with
S pectrum
G N D
S pread
P LL3
P LL2
V D D
Features
Packaged as 20-pin SSOP (QSOP) (Pb-free)
Spread spectrum capability
Eight addressable registers
Replaces multiple crystals and oscillators
Output frequencies up to 200 MHz at 3.3 V
Input crystal frequency of 5 to 27 MHz
Input clock frequency of 2 to 50 MHz
Up to nine reference outputs
Up to two sets of four low-skew outputs
Operating voltages of 3.3 V
Advanced, low-power CMOS process
For one output clock, use the ICS341. For two output
clocks, see the ICS342. For three output clocks, see the
ICS343. For more than three outputs, see the ICS345 or
ICS348.
3
2
C ontrol
E nable
O utput
D ivide
Logic
and
PD TS
C LK 1
C LK 2
C LK 3
C LK 4
C LK 5
C LK 6
C LK 7
C LK 8
C LK 9
ICS345
DATASHEET
REV M 051310

Related parts for ICS345RP

ICS345RP Summary of contents

Page 1

TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER ICS345 Description The ICS345 field programmable clock synthesizer generates up to nine high-quality, high-frequency clock outputs including multiple reference clocks from a low-frequency crystal or clock input designed to replace crystals ...

Page 2

ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER Pin Assignment X1/ICLK CLK9 4 VDD 5 GND 6 CLK1 7 CLK2 8 CLK3 9 CLK4 10 20-pin (150 mil) SSOP (QSOP) Pin Descriptions Pin Pin Number ...

Page 3

ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER External Components Series Termination Resistor Clock output traces over one inch should use series termination. To series terminate a 50 trace (a commonly used trace impedance), place a 33 resistor in series ...

Page 4

ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER Spread Spectrum Modulation The ICS345 utilizes frequency modulation (FM) to distribute energy over a range of frequencies. By modulating the output clock frequencies, the device effectively lowers energy across a broader range ...

Page 5

... ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER Recommended Operation Conditions Parameter Ambient Operating Temperature (ICS345RP) Ambient Operating Temperature (ICS345RIP) Power Supply Voltage (measured in respect to GND) Power Supply Ramp Time DC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85 C Parameter ...

Page 6

ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER AC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85 C Parameter Input Frequency Output Frequency Output Rise Time Output Fall Time Duty Cycle Output Frequency ...

Page 7

ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No INDEX AREA IDT™ / ICS™ TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK ...

Page 8

... ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER Ordering Information Part / Order Number Marking 345RPLF ICS345RPLF 345RPLFT ICS345RPLF 345RIPLF ICS345RIPLF 345RIPLFT ICS345RIPLF 345R-XXLF 345R-XXLF 345R-XXLFT 345R-XXLF 345RI-XXLF 345RI-XXLF 345RI-XXLFT 345RI-XXLF Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. ...

Page 9

ICS345 TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER 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. ...

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