If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

+18V

Power Dissipation (Note 2)

LM556CM

410 mW

LM556CN

1620 mW

Operating Temperature Ranges

LM556C

0˚C to +70˚C

Storage Temperature Range

−65˚C to +150˚C

Soldering Information

Dual-In-Line Package

Soldering (10 Seconds)

260˚C

Small Outline Packages

Vapor Phase (60 Seconds)

215˚C

Infrared (15 Seconds)

220˚C

See AN-450 “Surface Mounting Methods and Their Effect

on Product Reliability” for other methods of soldering

surface mount devices.

Electrical Characteristics

(T

Parameter

Conditions

Limits

Units

LM556C

Min

Typ

Max

Supply Voltage

4.5

16

V

Supply Current

(Each Timer Section)

V

V

(Low State) (Note 3)

3

10

6

14

mA

Timing Error, Monostable

Initial Accuracy

0.75

%

Drift with Temperature

R

50

ppm/˚C

C = 0.1µF, (Note 4)

Accuracy over Temperature

1.5

%

Drift with Supply

0.1

%/V

Timing Error, Astable

Initial Accuracy

2.25

%

Drift with Temperature

R

150

ppm/˚C

Accuracy over Temperature

C = 0.1µF, (Note 4)

3.0

%

Drift with Supply

0.30

%/V

Trigger Voltage

V

4.5

5

5.5

V

V

1.25

1.67

2.0

V

Trigger Current

0.2

1.0

µA

Reset Voltage

0.4

0.5

1

V

Reset Current

0.1

0.6

mA

Threshold Current

V

V

0.03

0.1

250

µA

nA

Control Voltage Level and

Threshold Voltage

V

V

9

2.6

10

3.33

11

4

V

Pin 1, 13

Leakage Output High

1

100

nA

Pin 1, 13 Sat

(Note 7)

Output Low

V

180

300

mV

Output Low

V

80

200

mV

Output Voltage Drop (Low)

V

I

0.1

0.25

V

I

0.4

0.75

V

I

2

2.75

V

I

2.5

V

V

I

V

I

0.25

0.35

V

www.national.com

3