HD74LS669

Rev.2.00, Feb.18.2005, page 3 of 8

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

—

—

–400

µA

Output current

—

—

8

mA

Operating temperature

Topr

–20

25

75

°C

Count frequency

0

—

25

MHz

Clock pulse width

25

—

—

ns

Input Data

A, B, C, D

25

—

—

Enable

P, T

35

—

—

Load

30

—

—

Setup time

Up/Down

35

—

—

ns

Hold time

0

—

—

ns

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol

min.

typ.*

max.

Unit

Condition

2.0

—

—

V

Input voltage

—

—

0.8

V

2.7

—

—

V

µA

—

—

0.4

V

Output voltage

—

—

0.5

V

A, B, C, D,

P, U/D

—

—

20

Clock,

T

—

—

20

Load

—

—

40

µA

A, B, C, D,

P, U/D

—

—

–0.4

Clock,

T

—

—

–0.4

Load

—

—

–0.8

mA

A, B, C, D,

P, U/D

—

—

0.1

Clock,

T

—

—

0.1

Input current

Load

—

—

0.2

mA

Short-circuit output current

–20

—

–100

mA

Supply current**

—

20

34

mA

Input clamp voltage

—

—

–1.5

V

the outputs open.