74HC541 データシートの表示（PDF） - ON Semiconductor

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74HC541

Octal 3−State Noninverting Buffer/Line Driver/Line Receiver

ON Semiconductor 

MC74HC541A

tr

INPUT A

tPLH

OUTPUT Y

90%

50%

10%

50%

10%

90%

tf

VCC

GND

tPHL

tTLH

tTHL

Figure 3. Switching Waveform

OE1 or OE2

tPZL

OUTPUT Y

tPZH

OUTPUT Y

50%

50%

VCC

tPLZ

50%

GND

HIGH

IMPEDANCE

10%

VOL

tPHZ

50%

90%

VOH

HIGH

IMPEDANCE

Figure 4. Switching Waveform

DEVICE

UNDER

TEST

TEST

POINT

OUTPUT

CL*

*Includes all probe and jig capacitance

Figure 5. Test Circuit

DEVICE

UNDER

TEST

TEST

POINT

OUTPUT 1 kW

CL*

CONNECT TO VCC WHEN

TESTING tPLZ AND tPZL.

CONNECT TO GND WHEN

TESTING tPHZ and tPZH.

*Includes all probe and jig capacitance

Figure 6. Test Circuit

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