MDS 501B C

2

Revision 120704

ICS501B

Pin Assignment

Clock Output Table

0 = connect directly to ground

1 = connect directly to VDD

M = leave unconnected (floating)

Pin Descriptions

X1/ I CLK

VDD

GND

OE

S1

S0

CLK

X2

1

2

3

4

8

7

6

5

8 Pi n ( 150 mil) SOIC

S1 S0

CLK

Minimum Input

0

0

4X input

0.5 MHz

0

M

5.3125X input

1 MHz

0

1

5X input

0.5 MHz 5

M

0

6.25X input

0.5 MHz

M

M

2X input

1 MHz

M

1

3.125X input

1 MHz

1

0

6X input

0.5MHz

1

M

3X input

0.5MHz

1

1

8X input

0.5MHz

Pin

Number

Pin

Name

Pin

Type

Pin Description

1

XI/ICLK

Input

Crystal connection or clock input.

2

VDD

Power

Connect to +3.3 V or +5 V.

3

GND

Power

Connect to ground.

4

S1

Tri-level Iinput

Select 1 for output clock. Connect to GND or VDD or float.

5

CLK

Output

Clock output per table above.

6

S0

Tri-level Input

Select 0 for output clock. Connect to GND or VDD or float.

7

OE

Input

Output enable. Tri-states CLK output when low. Internal pull-up.

8

X2

Output

Crystal connection. Leave unconnected for clock input.