Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

DM54LS

−55˚C to +125˚C

DM74LS

0˚C to +70˚C

Storage Temperature Range

−65˚C to +150˚C

Recommended Operating Conditions

Symbol

Parameter

DM54LS47

DM74LS47

Units

Min

Nom

Max

Min

Nom

Max

V

CC

Supply Voltage

4.5

5

5.5

4.75

5

5.25

V

V

IH

High Level Input Voltage

2

2

V

V

IL

Low Level Input Voltage

0.7

0.8

V

I

OH

High Level Output Currenta−g

−50

−250

µA

I

OH

High Level Output Current BI /RBO

−50

µA

I

OL

Low Level Output Current

12

24

mA

T

A

Free Air Operating Temperature

−55

125

0

70

˚C

Note 2:

The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these

limits. The parametric values defined in the “Electrical Characteristics” table are not guaranteed at the absolute maximum ratings. The “Recommended Operating

Conditions” table will define the conditions for actual device operation.

Note 3: OFF state at a–g.

Electrical Characteristics

Over recommended operating free air temperature range (unless otherwise noted)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 4)

V

I

Input Clamp Voltage

V

−1.5

V

V

OH

High Level

V

DM54

2.4

V

Output Voltage

V

DM74

2.7

3.4

I

OFF

Output High Current

V

250

µA

Segment Outputs

V

OL

Low Level

V

DM54

0.4

Output Voltage

V

DM74

0.35

0.5

I

DM74

0.5

V

I

DM74

0.25

0.4

I

DM74

0.4

I

I

V

DM74

100

µA

Input Voltage

V

DM54

I

IH

High Level Input Current

V

20

µA

I

IL

Low Level Input Current

V

−0.4

mA

I

OS

Short Circuit

V

DM54

−0.3

−2.0

mA

Output Current

(Note 5) , I

DM74

−0.3

−2.0

I

CC

Supply Current

V

13

mA

Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second.

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