HCTS74MS

FN2143 Rev 2.00

Page 8 of 9

September 1995

AC Timing Diagrams and Load Circuit

VS

INPUT

OUTPUT

OUTPUT

TTHL

80%

20%

80%

20%

VIH

VIL

VOH

VOL

VOH

VOL

TPLH

TPHL

VS

TTLH

AC VOLTAGE LEVELS

PARAMETER

HCTS

UNITS

VCC

4.50

V

VIH

3.00

V

VS

1.30

V

VIL

0

V

GND

0

V

DUT

TEST

CL

RL

POINT

CL = 50pF

RL = 500



Pulse Width, Setup, Hold Timing Diagram Positive Edge Trigger

TW

TH

VS

TSU

INPUT

VIH

VIL

INPUT CP

VIH

VIL

TW

VS

TH = HOLD TIME

TSU = SETUP TIME

TW = PULSE WIDTH

VOLTAGE LEVELS

PARAMETER

HCTS

UNITS

VCC

4.50

V

VIH

3.00

V

VS

1.30

V

VIL

0

V

GND

0

V