HD74LS374

Rev.2.00, Feb.18.2005, page 2 of 7

Function Table

Inputs

Outputs

Output control

Clock

D

Q

L

↑

H

H

L

↑

L

L

L

L

X

H

X

X

Z

Notes: H; high level, L; low level, X; irrelevant

↑; transition from low to high level

Z; off (high-impedance) state of a three state output

Block Diagram

CK

CK

CK

CK

CK

CK

CK

CK

D

1D

Output

Control

2D

3D

4D

5D

6D

7D

8D

1Q

2Q

3Q

4Q

5Q

6Q

7Q

8Q

Clock

Q

D

Q

D

Q

D

Q

D

Q

D

Q

D

Q

D

Q

Absolute Maximum Ratings

Item

Symbol

Ratings

Unit

Supply voltage

7

V

Input voltage

7

V

Power dissipation

400

mW

Storage temperature

Tstg

–65 to +150

°C

Note:

Voltage value, unless otherwise noted, are with respect to network ground terminal.

Recommended Operating Conditions

Item

Symbol

Min

Typ

Max

Unit

Supply voltage

4.75

5.00

5.25

V

Output voltage

—

—

5.5

V

—

—

–2.6

mA

Output current

—

—

24

mA

Operating temperature

Topr

–20

25

75

°C

“H” Level

15

—

—

ns

Clock pulse width

“L” Level

15

—

—

ns

Data setup time

20

↑

—

—

ns

Data hold time

0

↑

—

—

ns