MC74VHC540DTR2G(2011) 查看數據表（PDF） - ON Semiconductor

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MC74VHC540DTR2G
(Rev.:2011)

Octal Bus Buffer Inverting

ON Semiconductor 

A

50%

tPHL

Y

50% VCC

Figure 2.

MC74VHC540

SWITCHING WAVEFORMS

VCC

OE1 or OE2

GND

tPLH

Y

50%

tPZL tPLZ

50% VCC

tPZH tPHZ

VCC

50%

GND

HIGH

IMPEDANCE

VOL +0.3V

VOH -0.3V

Y

50% VCC

HIGH

IMPEDANCE

Figure 3.

DEVICE

UNDER

TEST

TEST

POINT

OUTPUT

CL*

TEST CIRCUITS

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 4.

*Includes all probe and jig capacitance

Figure 5.

INPUT EQUIVALENT CIRCUIT

INPUT

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