ICS552-01A [ICSI]

Crystal Oscillator & Multiplier with 8 Low Skew Outputs; 晶体振荡器和乘法器与8低偏移输出


型号：	ICS552-01A
厂家：	INTEGRATED CIRCUIT SOLUTION INC
描述：	Crystal Oscillator & Multiplier with 8 Low Skew Outputs 晶体振荡器和乘法器与8低偏移输出振荡器晶体振荡器
文件：	总4页 (文件大小：44K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ICS552-01A

Crystal Oscillator & Multiplier with 8 Low Skew Outputs

Description

Features

The ICS552-01A produces 8 low skew

copies of a multiple of the input when a

clock or fundamental, parallel-mode crystal

is connected to it. Unlike other clock

drivers, it does not require a separate

oscillator for the input. Using a phase-

locked loop (PLL) to multiply the input

frequency, it is ideal for generating and

distributing multiple high frequency clocks.

• Packaged in 20 pin SSOP (QSOP)

• Input frequency of 10.0 - 27.0 MHz

• Contains on-chip multiplier with selections

of x1, x1.33, x2, x2.66, x3, x3.33, x4,

x4.66, x5, and x6

• Provides 8 low skew outputs (<250 ps)

• Output clock duty cycle of 40/60 at 3.3 V

• Operating voltages of 3.0 V to 5.5 V

• Industrial temperature available

• Power Down and Tri state modes

Block Diagram

VDD

GND

Output

CLK1

Buffer

Output

CLK2

Buffer

S3:S0

PLL

Multiplier

Output

CLK3

Buffer

Output

Buffer

CLK4

10.0 - 27.0 MHz

crystal or clock

Output

CLK5

Buffer

Clock

Buffer/

Crystal

Output

CLK6

Buffer

Oscillator

Output

CLK7

Buffer

Output

CLK8

Buffer

MDS 552-01 AB

Revision 032200

Printed 11/14/00

Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408) 295-9800tel • www.icst.com

ICS552-01A

Crystal Oscillator & Multiplier with 8 Low Skew Outputs

Pin Assignment

Multiplier Select Table

Multiplier

Power Down

19 DC

x1.333

X1/ICLK

VDD

18 CLK8

CLK7

x2.666

VDD

x3.333

GND

CLK1

CLK2

CLK3

CLK4

GND

CLK6

x4.66

Tri state All

CLK5

0 = connect directly to ground.

1 = connect directly to VDD.

All clocks stop low in Power Down state.

All clocks outputs are high impedance in 1101 mode.

20 pin SSOP (QSOP)

Pin Descriptions

Pin #

Name

Type Description

Don't connect.

Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal.

Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal, or clock.

Connect to +3.3 V or +5.0 V. Decouple with pin 6.

Multiplier Select Pin 2 per table above.

Connect to ground.

X1/ICLK

VDD

GND

CLK1

CLK2

CLK3

CLK4

CLK5

CLK6

GND

VDD

CLK7

CLK8

Clock Output 1.

Clock Output 2.

Clock Output 3.

Clock Output 4.

Multiplier Select Pin 1 per table above.

Clock Output 5.

Clock Output 6.

Connect to ground.

Multiplier Select Pin 3 per table above.

Connect to +3.3 V or +5.0 V. Decouple with pin 14.

Clock Output 7.

Clock Output 8.

Don't connect.

Multiplier Select Pin 0 per table above.

Key: I = Input; O = output; P = power supply connection, XI, XO = crystal connections

MDS 552-01 AB

Revision 032200

Printed 11/14/00

Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408) 295-9800tel • www.icst.com

ICS552-01A

Crystal Oscillator & Multiplier with 8 Low Skew Outputs

Electrical Specifications

Parameter

Conditions

Minimum

Typical

Maximum

Units

ABSOLUTE MAXIMUM RATINGS (note 1)

Supply voltage, VDD

Referenced to GND

VDD+0.5

Inputs and Clock Outputs

Ambient Operating Temperature

Referenced to GND

Commercial

-0.5

°C

Industrial

-40

Soldering Temperature

Storage temperature

Max of 10 seconds

260

-65

150

DC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)

Operating Voltage, VDD

3.0

5.5

(VDD/2)-1

0.8

Input High Voltage, VIH

Input Low Voltage, VIL

Input High Voltage, VIH

Input Low Voltage, VIL

Output High Voltage, VOH

Output Low Voltage, VOL

ICLK

(VDD/2)+1

VDD/2

ICLK

S3:S0

VDD=3.3V, IOH=-8mA

VDD=3.3V, IOL=8mA

2.4

0.4

Output High Voltage, VOH, VDD = 3.3 or 5 V IOH=-8mA

VDD-0.4

Operating Supply Current, IDD, at 3.3 V

Operating Supply Current, IDD, at 5 V

Power Down Supply Current, IDD, at 3.3 V

Short Circuit Current, VDD = 3.3 V

No Load, 25 MHz in, x4

µA

No Load, 25 MHz in, x4

S3:S0 = 0 (Gnd)

Each output

±50

AC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)

Input Crystal or Clock Frequency

1.5

MH z

Output Clock Rise Time

Output Clock Fall Time

Output Clock Duty Cycle

Output to Output Skew

0.8 to 2.0 V

2.0 to 0.8 V

At VDD/2

Rising edges at VDD/2

250

Note: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged

exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability.

External Components

A minimum number of external components are required for proper operation. A decoupling capacitor of

0.01 uF should be connected between VDD and GND on pins 4 and 6, and 16 and 14. Other VDDs and

GNDs can be connected to these pins or directly to their respective power planes. A 33 Wseries terminating

resistor may be used on the clock output if the trace is longer than 1-inch.

The crystal should be a fundamental mode (do not use third overtone), parallel resonant, with accuracy as

required by the application. Crystal capacitors should be connected from pins X1 to ground and X2 to

ground. The value of these capacitors is given by the following equation, where C is the crystal load

capacitance: Crystal caps (pF) = (C -12) x 2. So for a crystal with 18pF load capacitance, two 12pF caps

should be used. For a clock input, connect it to X1/ICLK, and leave X2 unconnected (floating).

MDS 552-01 AB

Revision 032200

Printed 11/14/00

Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408) 295-9800tel • www.icst.com

ICS552-01A

Crystal Oscillator & Multiplier with 8 Low Skew Outputs

Package Outline and Package Dimensions

(For current dimensional specifications, see JEDEC Publication No. 95.)

20 pin SSOP

Inches

Symbol Min

Millimeters

Max

Min

1.35

0.10

0.20

0.19

8.56

Max

0.053 0.069

0.004 0.010

0.008 0.012

0.007 0.010

0.337 0.344

.025 BSC

1.75

0.25

0.30

0.25

8.74

0.635 BSC

INDEX

AREA

0.228 0.244

0.150 0.157

0.016 0.050

5.79

3.81

0.41

6.20

3.99

1.27

Ordering Information

Part/Order Number

ICS552R-01

Marking

Package

Shipping

Tubes

Temperature

0 to 70 °C

ICS552R-01

ICS552R-01I

20 pin SSOP

ICS552R-01T

ICS552R-01I

Tape and Reel 0 to 70 °C

Tubes -40 to 85 °C

Tape and Reel -40 to 85 °C

ICS552R-01IT

While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) 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 range, high reliability, or other extraordinary

environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does

not authorize or warrant any ICS product for use in life support devices or critical medical instruments.

MDS 552-01 AB

Revision 032200

Printed 11/14/00

Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408) 295-9800tel • www.icst.com

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