TC74VHC74F/FN/FT/FK

2007-10-01

2

Pin Assignment

IEC Logic Symbol

Truth Table

Inputs

Outputs

CLR

PR

D

CK

Q

Q

Function

L

H

X

X

L

H

Clear

H

L

X

X

H

L

Preset

L

L

X

X

H

H

―

H

H

L

L

H

―

H

H

H

H

L

―

H

H

X

n

Q

No Change

X: Don’t care

Absolute Maximum Ratings (Note)

Characteristics

Symbol

Rating

Unit

Supply voltage range

−0.5 to 7.0

V

DC input voltage

−0.5 to 7.0

V

DC output voltage

V

Input diode current

−20

mA

Output diode current

±20

mA

DC output current

±25

mA

±50

mA

Power dissipation

180

mW

Storage temperature

−65 to 150

°C

Note:

Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or

even destruction.

Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the

significant change in temperature, etc.) may cause this product to decrease in the reliability significantly

even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute

maximum ratings and the operating ranges.

Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook

(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test

report and estimated failure rate, etc).

Q

1

PR

1

CLR

2

2D

2CK

PR

2

2Q

CLR

1

1D

1CK

1Q

Q

2

CK

Q

D

Q

CK

Q

D

Q

9

8

14

13

12

11

10

1

2

3

4

5

6

7

(top view)

GND

CLR

2

CLR

1

(12)

(3)

S

(4)

(1)

(2)

(11)

(10)

1CK

PR

1

1D

2CK

2D

(5)

(6)

(9)

(8)

1Q

Q

1

2Q

Q

2

C1

1D

R

(13)

PR

2