ICS94228 datasheet(11/17 Pages) ICST

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ICS94228

0447E—05/07/04

Electrical Characteristics - REF

TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL = 20 pF (unless otherwise stated)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output High Voltage

VOH5

IOH = -12 mA

2.4

Output Low Voltage

VOL5

IOL = 9 mA

0.4

Output High Current

IOH5

VOH = 2.0 V

-22

Output Low Current

IOL5

VOL = 0.8 V

Rise Time

tr5

VOL = 0.4 V, VOH = 2.4 V

1.3

Fall Time

tf5

VOH = 2.4 V, VOL = 0.4 V

1.4

Duty Cycle

dt5

VT = 1.5V

1Guaranteed by design, not 100% tested in production.

Electrical Characteristics - CPUCLK (Open Drain)

TA = 0 - 70°C; VDD = 3.3 V +/-5%; VDDL=2.5V+/-5%; CL = 20 pF (unless otherwise stated)

PARAMETER

SYMBOL

MIN

TYP

UNITS

Output Impedance

Output Low Current

IOL2B

Rise Time

1, CPUCLK

tr2B

2.2

Fall Time

1, CPUCLK

tf2B

1.3

Duty Cycle

dt2B

Skew

tsk2B

140

Jitter, Cycle-to-cycle

CPUCLK

tjcyc-cyc2B

150

Notes:

1 - Guaranteed by design, not 100% tested in production.

2 - VDIF specifies the minimum input differential voltages (VTR-VCP) required for switching, where VTR is the "tr

3 - Vpullup(external) = 2.7V, Min = Vpullup(external)/2-150mV; Max=(Vpullup(external)/2)+150mV

Differential Crossover

Voltage

CPUCLK(Open Drain)

Note 3

1.2

0.4

0.2

VOL = 0.3V

VOL = 20%, VOH = 80%

VOH = 80%, VOL=20%

VT = 50%

VT = VX

200

250

Vpullup(external)

+ 0.6

1.7

1.4

Vpullup(external)

+ 0.6

2.0

2.5

Output Low Voltage

Differential voltage-DC

VDIF

Note 2

Vpull-up(external)

Differential voltage-AC

VDIF

Note 2

Termination to

MAX

VOL2B

Vpull-up(external)

1.2

0.4

Output High Voltage

VOH2B

CONDITIONS

VO = VX

Termination to

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