ELECTRICAL CHARACTERISTICS

6.7 AC Characteristics Measuring Conditions

1.Input/output signal

VOH

 

 

VOH

 

 

VIH

VIH

 

 

 

 

 

 

 

 

TEST POINT

 

 

VIL

VIL

 

 

 

 

 

VOL

 

 

VOL

*The input signals in AC test mode are either VOH (logic “1”) orVOL (logic “0”). Timing measurements are made atVIH (logic “1”) and VIL (10gic “0”).

2. Floating

VOH

VOL

 

 

 

 

Floating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIH

VIH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIL

VIL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOH

VOL

*The port 0 floating interval is measured from the time the port 0 pin Voltage drops below

VIH after sinking to GND at 2.4mA when switching to floating status from a “1” output, and from the time the port 0 pin Voltage exceeds VIL after connecting to a 400A source when switching to floating status from a “0” output.

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Sonic Alert msm83c154s, msm80154s AC Characteristics Measuring Conditions, Floating, Input/output signal, Test Point