MC74VHC540 Ver la hoja de datos (PDF) - Motorola => Freescale

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MC74VHC540

Octal Bus Buffer Inverting

Motorola => Freescale 

MC74VHC540

A

50%

tPHL

Y

50% VCC

Figure 1.

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 2.

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 3.

*Includes all probe and jig capacitance

Figure 4.

INPUT EQUIVALENT CIRCUIT

INPUT

MOTOROLA

4

VHC Data – Advanced CMOS Logic

DL203 — Rev 1

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