Triple PLL Field Prog. Spread Spectrum Clock Synthesizer

MDS 280 C

5

Revision 062205

Integrated Circuit Systems, Inc.

ICS280

PRELIMINARY INFORMATION

DC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85

°C

Note 1: Example with 25 MHz crystal input, four unloaded 33.3 MHz outputs.

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Operating Voltage

VDD

3.135

3.465

V

Operating Supply Current

Input High Voltage

IDD

Config. Dependent - See

mA

Four 33.3333 MHz outs,

VDD=3.3V;

PDTS = 1, no load, Note 1

22

mA

PDTS = 0, no load

500

µA

Input High Voltage

S2:S0

VDD/2+1

V

Input Low Voltage

S2:S0

0.4

V

Input High Voltage, PDTS

VDD-0.5

V

Input Low Voltage, PDTS

0.4

V

Input High Voltage

ICLK

VDD/2+1

V

Input Low Voltage

ICLK

VDD/2-1

V

Output High Voltage

(CMOS High)

VDD-0.4

V

Output High Voltage

2.4

V

Output Low Voltage

0.4

V

Short Circuit Current

Low Drive

±40

mA

High Drive

±70

Nom. Output Impedance

20

Ω

Internal pull-up Resistor

S2:S0, PDTS

190

k

Ω

Internal pull-down

Resistor

CLK outputs

120

k

Ω

Input Capacitance

Inputs

4

pF