ICS548-03

Low Skew Clock Inverter and Divider

MDS 548-03

2

Revision 042700

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

ADVANCE INFORMATION

Pin Assignment

Pin Descriptions

Key: I = Input; O = Output; P = Power Supply connection; CI = Clock Input

Number

Name

Type

Description

1

ICLK

CI

Input Clock. Connect to a CMOS level input clock.

2

VDD

P

Connect to +3.3V or +5.0V.

3

VDD

P

Connect to +3.3V or +5.0V.

4

S3

I

Clock Select Pin 3. See above table.

5

GND

P

Connect to ground.

6

GND

P

Connect to ground.

7

S2

I

Clock Select Pin 2. See above table.

8

S0

I

Clock Select Pin 0. See above table.

9

S1

I

Clock Select Pin 1. See above table.

10

OE

I

Output Enable. Tri-states all clock outputs when low.

11

CLK/2

O

Clock Output divided by 2. See above table.

12

CLK

O

Clock Output. See above table.

13

CLK

O

Inverted Clock Output. See above table.

14

DC

-

Don't Connect. Do not connect anything to this pin.

15

DC

-

Don't Connect. Do not connect anything to this pin.

16

DC

-

Don't Connect. Do not connect anything to this pin.

1

8

9

16

2

3

4

5

6

7

10

11

12

13

14

15

DC

DC

CLK

CLK

VDD

S2

GND

S3

GND

VDD

S0

OE

ICLK

DC

S1

CLK/2

CLK, CLK, and CLK/2 Select Table (in MHz)

S3

S2

S1

S0

CLK, CLK

CLK/2

PLL

Input Range

0

0

0

0

Low

Low

Off

Power down

0

0

0

1

Input/4

Input/8

On

20 -120

0

0

1

0

Input

Input/2

On

20 -120

0

0

1

1

Input/2

Input/4

On

20 -120

0

1

0

0

Low

Low

Off

Power down

0

1

0

1

Input x 2

Input

On

20 - 60

0

1

1

0

Input/5

Input/10

On

20 -120

0

1

1

1

Input/3

Input/6

On

20 - 120

1

0

0

0

Low

Low

Off

Power down

1

0

0

1

Input/4

Input/8

On

10 - 60

1

0

1

0

Input

Input/2

On

10 - 60

1

0

1

1

Input/2

Input/4

On

10 - 60

1

1

0

0

Low

Low

Off

Power down

1

1

0

1

Input/6

Input/12

Off

0 - 160

1

1

1

0

Input/8

Input/16

Off

0 - 160

1

1

1

1

Input/2

Input/4

Off

0 - 160