P1708C

Rev. 2 | Page 2 of 7 | www.onsemi.com

SSON/SBM

Pin Configuration

Pin Description

Pin#

Pin Name

Type

Description

1

CLKIN

I

Connect to externally generated clock signal. To put the part into standby mode,

disable the input clock signal to this pin and pull SSON / SBM (pin 5) low. Refer to

Standby Mode Selection Table.

2

VDD

P

Connect to +3.3V.

3

VSS

P

Ground Connection. Connect to system ground.

4

ModOUT

O

Spread spectrum clock output.

5

SSON / SBM

I

Spread Spectrum On/Off and standby mode control. Refer to Standby Mode

Selection Table. This pin has an internal pull-up resistor.

6

SR1

I

Digital logic input used to select Spreading Range. Refer to Spread Spectrum

Selection Table. This pin has an internal pull-up resistor.

7

SR0

I

Digital logic input used to select Spreading Range. Refer to Spread Spectrum

Selection Table. This pin has an internal pull-up resistor.

8

NC

-

No connect.

Standby Mode Selection

CLKIN

SSON / SBM

Spread

Spectrum

ModOUT

PLL

Mode

Disabled

0

N/A

Disabled

Disabled

Standby

Disabled

1

N/A

Disabled

Free Running

Free Running

Enabled

0

Off

Reference

Disabled

Buffer out

Enabled

1

On

Normal

Normal

Normal

1

2

3

4

5

6

7

8

P1708C

CLKIN

VDD

VSS

ModOUT

SR1

SR0

NC