MC74HCT244A 查看數據表（PDF） - Motorola => Freescale

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MC74HCT244A

Octal 3−State Noninverting Buffer/Line Driver/Line Receiver with LSTTL−Compatible Inputs

Motorola => Freescale 

MC54/74HCT244A

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.

DATA INPUT

A OR B

LOGIC DETAIL

TO THREE OTHER

A OR B INVERTERS

* Includes all probe and jig capacitance

Figure 4.

ONE OF 8

BUFFERS

VCC

YA

OR

YB

ENABLE A OR ENABLE B

MOTOROLA

4

High–Speed CMOS Logic Data

DL129 — Rev 6

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