MDS 650-40 C

2

Revision 060705

ICS650-40

Pin Assignment

Output Select Table (MHz)

Pin Descriptions

1

2

3

X2

4

VDD

5

6

7

8

VDDOA

S1

OE

GND

16

X1/ICLK

GND

15

14

13

12

11

10

9

16-pin (173 mil) TSSOP

CLKB

CLKA

VDDOB

GND

S0

GND

VDD

VDD

S1

S0

CLKA

(MHz)

CLKB

(MHz)

0

0

127

127

0

1

133

133

1

0

157

157

1

1

189

189

Pin

Number

Pin

Name

Pin

Type

Pin Description

1

X1/ICLK

Input

Crystal or clock input. Connect to a 25 MHz crystal or single ended clock.

2

VDD

Power

Connect to +3.3 V.

3

GND

Power

Connect to ground.

4

VDDOA

Power

Connect to +2.5 V or +3.3 V. For clock output buffer A only.

5

CLKA

Output

Clock A output with weak pull-down resistor.

6

CLKB

Output

Clock B output with weak pull-down resistor.

7

VDDOB

Power

Connect to +2.5 V or +3.3 V. For clock output buffer B only.

8

GND

Power

Connect to ground.

9

S0

Input

Select pin 0.

10

S1

Input

Select pin 1.

11

VDD

Power

Connect to +3.3 V.

12

VDD

Power

Connect to +3.3 V.

13

GND

Power

Connect to ground.

14

OE

Input

Output enable tri-states outputs and device is not shut down. Internal

pull-up resistor.

15

GND

Power

Connect to ground.

16

X2

Output

Crystal connection. Leave unconnected for clock input.