MC74LVX240MELG 查看數據表（PDF） - ON Semiconductor

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MC74LVX240MELG

Octal Bus Buffer Inverting With 5V−Tolerant Inputs

ON Semiconductor 

1Dn, 2Dn

50%

tPHL

1On, 2On

50% VCC

Figure 3.

MC74LVX240

SWITCHING WAVEFORMS

VCC

GND

tPLH

1OE, 2OE

1On, 2On

1On, 2On

50%

tPZL

tPLZ

50% VCC

tPZH

tPHZ

50% VCC

Figure 4.

VCC

GND

HIGH

IMPEDANCE

VOL +0.3V

VOH -0.3V

HIGH

IMPEDANCE

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

CL*

TEST CIRCUITS

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 5. Propagation Delay Test Circuit

*Includes all probe and jig capacitance

Figure 6. Three−State Test Circuit

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