MC74VHCT540A Просмотр технического описания (PDF) - Motorola => Freescale

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MC74VHCT540A

Octal Bus Buffer Inverting

Motorola => Freescale 

MC74VHCT540A

A

1.5V

tPH

L

Y

1.5V

3.0V OE1 or OE2

GND

tPLH

Y

VOH

VOL

Y

Figure 3. Switching Waveform

1.5V

tPZL tPLZ

1.5V

tPZH tPHZ

3.0V

50%

GND

HIGH

IMPEDANCE

VOL +0.3V

VOH -0.3V

1.5V

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

1kΩ

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

http://onsemi.com

5

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