ICS308

SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER

SER PROG CLOCK SYNTHESIZER

IDT™ / ICS™ SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER 7

ICS308

REV J 120507

AC Electrical Characteristics

VDD = 3.3 V±10%, Ambient Temperature -40 to +85

° C, unless stated otherwise

Note 1: Measured with 15 pF load.

Note 2: Duty Cycle is configuration dependent. Most configurations are min 45% / max 55%

Thermal Characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Frequency

Fundamental crystal

5

27

MHz

Input Clock

2

50

MHz

Output Frequency

VDD=3.3 V

0.25

200

MHz

Output Clock Rise Time

20% to 80%, Note 1

0.8

ns

Output Clock Fall Time

80% to 20%, Note 1

0.8

ns

Output Clock Duty Cycle

Note 2

40

49-51

60

%

Power-up Time

STROBE goes high until

stable CLK out

310

ms

PDTS goes high until

stable CLK out

.2

2

ms

Maximum Output Jitter, short term

Reference Clock

±300

ps

Maximum Output Jitter, short term

All other clocks,

dependent

±200

ps

Pin-to-Pin Skew

Low Skew Outputs

-250

250

ps

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Thermal Resistance Junction to

Ambient

Still air

135

° C/W

1 m/s air flow

93

° C/W

3 m/s air flow

78

° C/W

Thermal Resistance Junction to Case

60

° C/W