HD74HC221FPEL 参数 Datasheet PDF下载

HD74HC221

Pin Arrangement

1A

1B

CLR1

1Q

2Q

Cext 2

2 Rext/

Cext

GND

1

2

3

4

5

Q

CLR

Q

Q

16

15

14

13

12

11

10

9

(Top view)

V

CC

1 Rext/

Cext

1 Cext

1Q

2Q

2CLR

2B

2A

Q

CLR

6

7

8

Logic Diagram

V

CC

Rext

Cext

Cext

Rext

/Cext

A

B

Q

Clear

Q

Q

Clear

Absolute Maximum Ratings

Item

Supply voltage range

Input / Output voltage

Input / Output diode current

Output current

V

CC

, GND current

Power dissipation

Storage temperature

Symbol

V

CC

V

IN

, V

OUT

I

IK

, I

OK

I

O

I

CC

or I

GND

P

T

Tstg

Ratings

–0.5 to 7.0

–0.5 to V

CC

+0.5

±20

±25

±50

500

–65 to +150

Unit

V

V

mA

mA

mA

mW

°C

Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of

which may be realized at the same time.

Rev.2.00 Jan 31, 2006 page 2 of 7