MC74HCT74A(2000) 查看數據表（PDF） - ON Semiconductor

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MC74HCT74A
(Rev.:2000)

Dual D Flip-Flop with Set and Reset with LSTTL Compatible Inputs

ON Semiconductor 

MC74HCT74A

SWITCHING WAVEFORMS

tr

tf

CLOCK

2.7 V

1.3 V

3V

0.3 V

GND

tw

1/fmax

90%

Q OR Q 1.3 V

10%

tPLH

tTLH

tPHL

tTHL

Figure 1.

SET OR

RESET

Q OR Q

Q OR Q

CLOCK

tw

3V

1.3 V

GND

tPHL

1.3 V

tPLH

1.3 V

trec

3V

1.3 V

GND

Figure 2.

VALID

3V

DATA

1.3 V

GND

tsu

th

3V

CLOCK

1.3 V

GND

Figure 3.

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

CL*

*Includes all probe and jig capacitance

Figure 4.

4, 10

SET

2, 12

DATA

1, 13

RESET

EXPANDED LOGIC DIAGRAM

3, 11

CLOCK

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4

5, 9

Q

6, 8

Q

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