ICS671M-01T - Integrated Circuit Systems, Inc.

ICS671-01

MDS 671-01 C 1Revi si on 111502

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

ZERO DELAY, LOW SKEW BUFFER AND MULTIPLIER

Description

The ICS671-01 is a low phase noise, high speed PLL

based, 8 output, low skew zero delay buffer and

multiplier. Based on ICS’ proprietary low jitter Phase

Locked Loop (PLL) techniques, the device provides

eight low skew outputs at speeds up to 160 MHz at

3.3V. The part includes a bank of six outputs running at

either x2 or x4 mode, one output running at either x2,

x4, or x4 mode, and one additional output running at

either x1, x2, or x4 mode. For normal operation as a

zero delay buffer, any output clock is tied to the FBIN

pin.

ICS manufactures the largest variety of clock

generators and buffers and is the largest clock supplier

in the world.

Features

•Packaged in 16 pin SOIC

•Clock outputs from 5 to 160 MHz

•Zero input-output delay

•Integrated x2 or x4 selections, and x5 for CLK7

•Eight low-skew (<250 ps) outputs

•Full CMOS outputs with 25 mA output drive

capability at TTL levels

•Tri-state mode for board-level testing

•Advanced, low power, sub-micron CMOS process

•Operating voltage of 3.3V or 5V

Block Diagram

CLK4

CLK5

CLK3

CLK6

CLK7

CLK2

CLK1

CLK8

Control

Logic

S1, S0

x2, x4, or x5

PLL

CLKIN

FBIN

VDD

GND

ZERO DELAY, LOW SKEW BUFFER AND

MDS 671-01 C 2Revision 111502

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

ICS671-01

Pin A ssignme nt

Output Clock Mode Select Table

Note 1. Outputs are in high impedence state

Note 2: In S1:S0 = 01 Mode, only the x1 output on CLK 8 will be zero delay. The x2 and x5 outputs can power-up

in different states so the skew relationship is not defined.

Pin Descriptions

CLKIN FBIN

CLK1

CLK2

CLK8

VDD

CLK7

GND

CLK3

VDD

GND

CLK6

CLK4 CLK5

S0 S1

16 pin narrow (150 mil) SO IC

S1 S0 CLK1:6 CLK7 CLK8 Input Range

0 0 Tri-state (note 1) Tri-state (note 1) Tri-state (note 1) -

0 1 x2 (note 2) x5 (note 2) x1 5 to 30 MHz

1 0 x2 x2 x2 15 to 80 MHz

1 1 x4 x4 x4 7.5 to 40 MHz

Number Pin

Name Pin Type Pin Description

1 CLKIN Input Clock input.

2-3, 6-7, 10-11 CLK1:6 Output Clock outputs 1:6. See table above.

4 VDD Power Power supply. Connect both pins to the same voltage (either 3.3V or 5V).

5 GND Power Connect to ground.

8 S0 Input Select input 0. See table above.

9 S1 Input Select input 1. See table above.

12 GND Power Connect to ground.

13 VDD Power Power supply. Connect both pins to the same voltage (either 3.3V or 5V).

14 CLK7 Output Clock output 7. See table above.

15 CLK8 Output Clock output 8. See table above. Normally use this clock as feedback.

16 FBIN Input Feedback input. Connect to CLK8 under normal operations.

ZERO DELAY, LOW SKEW BUFFER AND

MDS 671-01 C 3Revision 111502

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

ICS671-01

External Components

The ICS671-01 requires a minimum number of external components for proper operation. Decoupling

capacitors of 0.01mF should be connected between VDD and GND on pins 4 and 5, and VDD and GND on

pins 13 and 12, as close to the device as possible. A series termination resistor of 33W may be used to

each clock output pin to reduce reflections.

Absolute Maximum Rating s

Stresses above the ratings listed below can cause permanent damage to the ICS671-01. These ratings,

which are standard values for ICS 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. Exposure to absolute maximum rating conditions for extended periods can

affect product reliability. Electrical parameters are guaranteed only over the recommended operating

temperature range.

Recommended Oper ation Conditio ns

DC Electrical Characteristics

VDD=3.3V ±10%, Ambient temperature 0 to +70°C, unl es s stat ed othe rwis e

Item Rating

Supply Voltage, VDD 7V

All Inputs and Outputs -0.5V to VDD+0.5V

CLKIN and FBIN inputs -0.5V to 5.5V

Electrostatic Discharge 2000 V

Ambient Operating Temperature 0 to +70°C

Storage Temperature -65 to +150°C

Junction Temperature 150°C

Soldering Temperatur e 260°C

Parameter Min. Typ. Max. Units

Ambient Operating Temperature 0 +70 °C

Power Supply Voltage (measured in respect to GND) +3.13 +5.50 V

Parameter Symbol Conditions Min. Typ. Max. Units

Operati ng Voltage VDD 3.13 5.5 V

Input High Voltage VIH CLKIN VDD/2+1 VDD/2 V

Input Low Voltage VIL CLKIN VDD/2 VDD/2-1 V

Input High Voltage VIH 2V

Input Low Voltage VIL 0.8 V

ZERO DELAY, LOW SKEW BUFFER AND

MDS 671-01 C 4Revision 111502

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

ICS671-01

AC Electrical Characteristics

VDD = 3.3V ±10%, Ambient Temperature 0to +70°C, CLOAD at CLK = 15 pF, unless stated otherwise

Note 1: With CLKIN = 20 MHz, FBIN to CLK8, all outputs at 40 MHz

Note 2:With CLKIN = 80 MHz, FBIN to CLK8, all outputs at 160 MHz

Note 3: These specs do not apply to mode 01

Input Low Current IIL VIN = 0V 50 µA

Input High Current IIH VIN = VDD 100 µA

Output High Voltage VOH IOH = -25 mA 2.4 V

Ouput Low Voltage VOL IOL = 25mA 0.4 V

Output High Voltage,

CMOS level VOH IOH = -8 mA VDD-0.4 V

Operating Supply Current IDD No Load, S1 = 1, S0 = 0,

Note 1 25 mA

No Load, S1 = 1, S0 =0

Note 2

Power Down Supply

Current IDDPD CLKIN = 0, S0 = 0, S1 = 0 500 µA

Short Circuit Current IOS Each output ±50 mA

Input Capacitance CIN S0, S1, FBIN 7 pF

Parameter Symbol Conditions Min. Typ. Max. Units

Input Clock Frequency fIN See table on page 2 5 80 MHz

Output Clock Frequency See table on page 2 5 160 MHz

Output Rise Time tOR 0.8 to 2.0V, CL=30pF 1.5 ns

Output Fall Time tOF 2.0 to 0.8V, CL=30pF 1.5 ns

Output Clock Duty Cycle tDC measured at VDD/2 40 50 60 %

Device to Device Skew rising edges at VDD/2, Note 3 700 ps

Output to Output Skew rising edges at VDD/2, Note 3 250 ps

Input to Output Skew rising edges at VDD/2, FBIN to

CLK8 ±350 ps

Maximum Absolute JItter 15pF 300 ps

Cycle to Cycle Jitter 30pF loads 500 ps

PL L Lock Time Note 3 1.0 ms

ZERO DELAY, LOW SKEW BUFFER AND

MDS 671-01 C 5Revision 111502

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

ICS671-01

Thermal Characteristics (16 pin SOIC)

Parameter Symbol Conditions Min. Typ. Max. Units

Thermal Resistance Junction to

Ambient θJA Stil l air 120 °C/W

θJA 1 m/s air flow 115 °C/W

θJA 3 m/s air flow 105 °C/W

Thermal Resistance Junction to Case θJC 58 °C/W

ZERO DELAY, LOW SKEW BUFFER AND

MDS 671-01 C 6Revision 111502

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

ICS671-01

Package Outline and Package Dimensions (16 pin SOIC, 150 Mil. Narrow Body)

Package dimensions are kept current with JEDEC Publication No. 95

Ordering Information

While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no

responsibility for either its use o r for the infringement of any patents or other rights of third parties, which would result from its use. No other

circuits, pat ents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applic ations suc h 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.

Part / Order Number Marking Shipping

packaging Package Temperature

ICS671M-01 ICS671M-01 Tubes 16 pin SOIC 0 to +70° C

ICS671M-01T ICS671M-01 Tape and Reel 16 pin SOIC 0 to +70° C

INDEX

AREA

1 2

SEATING

PLANE

- C -

.10 (.004) C

h x 45

Millimeters Inches

Symbol Min Max Min Max

A 1.35 1.75 .0532 .0688

A1 0.10 0.25 .0040 .0098

B 0.33 0.51 .013 .020

C 0.19 0.25 .0075 .0098

D 9.80 10.00 .3859 .3937

E 3.80 4.00 .1497 .1574

e 1.27 BASIC 0.050 BASIC

H 5.80 6.20 .2284 .2440

h 0.25 0.50 .010 .020

L 0.40 1.27 .016 .050

α0°8°0°8°