Order this document by LM311/D

Device

Operating

Temperature Range

Package

LM311

LM211

SEMICONDUCTOR

TECHNICAL DATA

HIGH PERFORMANCE

VOLTAGE COMPARATORS

ORDERING INFORMATION

LM211D

LM311D

LM311N

TA = 25° to +85°C

TA = 0° to +70°C

SO–8

SO–8

Plastic DIP

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

N SUFFIX

PLASTIC PACKAGE

CASE 626

8

1

8

1

Gnd

Inputs

VEE

VCC

Output

Balance/Strobe

Balance

(Top View)

1

2

3

4

8

7

6

5

PIN CONNECTIONS

+

–

1

MOTOROLA ANALOG IC DEVICE DATA

Highly Flexible Voltage

Comparators

The ability to operate from a single power supply of 5.0 V to 30 V or

±15 V

split supplies, as commonly used with operational amplifiers, makes the

LM211/LM311 a truly versatile comparator. Moreover, the inputs of the

device can be isolated from system ground while the output can drive loads

referenced either to ground, the VCC or the VEE supply. This flexibility makes

it possible to drive DTL, RTL, TTL, or MOS logic. The output can also switch

voltages to 50 V at currents to 50 mA. Thus the LM211/LM311 can be used to

drive relays, lamps or solenoids.

Typical Comparator Design Configurations

Split Power Supply with Offset Balance

Single Supply

Ground–Referred Load

Load Referred to Positive Supply

Strobe Capability

–

Output

VEE

Inputs

VCC

RL

1

2

3

4

5

6

7

8

5.0 k

3.0 k

VCC

VCC

VCC

VCC

VCC

Output

Output

Output

Output

Output

RL

RL

RL

RL

RL

Inputs

Inputs

Inputs

Inputs

Inputs

VEE

VEE

VEE

VEE

VEE

2

3

2

3

2

3

2

3

2

3

4

4

4

4

4

7

8

1

Input polarity is reversed when

Gnd pin is used as an output.

7

1

8

8

7

6

1

1.0 k

TTL Strobe

1

7

8

Load Referred to Negative Supply

1

7

8

Input polarity is reversed when

Gnd pin is used as an output.

–

+

+

+

+

+

+

–

–

–

–

© Motorola, Inc. 1996

Rev 5