MC74VHC240 Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MC74VHC240

Octal Bus Buffer/Line Driver

Motorola => Freescale 

MC74VHC240

A or B

50%

tPHL

YA or YB

50% VCC

Figure 1.

SWITCHING WAVEFORMS

VCC

GND

tPLH

OEA or OEB

YA or YB

YA or YB

50%

tPZL tPLZ

50% VCC

tPZH tPHZ

50% VCC

Figure 2.

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 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 3. Test Circuit

* Includes all probe and jig capacitance

Figure 4. Test Circuit

INPUT

Figure 5. Input Equivalent Circuit

MOTOROLA

4

VHC Data – Advanced CMOS Logic

DL203 — Rev 1

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