MC74VHCT244AM Ver la hoja de datos (PDF) - ON Semiconductor

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MC74VHCT244AM

Octal Bus Buffer/Line Driver with 3-State Outputs

ON Semiconductor 

MC74VHCT244A

A or B

tPLH

YA or YB

1.5V

1.5V

3V

GND

tPHL

VOH

VOL

Figure 3. Switching Waveform

OEA or OEB

YA or YB

YA or YB

1.5V

tPZL

tPLZ

1.5V

tPZH

tPHZ

1.5V

3V

GND

HIGH

IMPEDANCE

VOL +0.3V

VOH -0.3V

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 kΩ

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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