Motorola LM311N, LM311DR2, LM311D, LM211DR2, LM211D Datasheet

Order this document by LM311/D

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
			3.0 k	VCC		VCC
				R	2	8	RL
	5.0 k				+
				L		7
	2	5		Inputs	3		Output
		+	6
				8 7	±	1
	Inputs 3	±		Output	VEE	4
				1
			4
			VEE

	Ground±Referred Load
				VCC
	2	+		8
				7
Inputs
	3	± 1
					Output
			4	RL

VEE

Input polarity is reversed when

Gnd pin is used as an output.

Load Referred to Negative Supply

		VCC
2	+	8
		7

Inputs

3 ± 1 Output

4 RL

VEE

Input polarity is reversed when

Gnd pin is used as an output.

Load Referred to Positive Supply						Strobe Capability
						VCC
		VCC			2	+	8	RL
								7
2		8		Inputs
	+		RL		3	±	1	Output
Inputs 3			7
	±		Output			6
		1				4
					VEE			TTL Strobe
	4
VEE							1.0 k

LM311

LM211

HIGH PERFORMANCE VOLTAGE COMPARATORS

SEMICONDUCTOR

TECHNICAL DATA

8

1

N SUFFIX

PLASTIC PACKAGE

CASE 626

8

1

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO±8)

PIN CONNECTIONS

Gnd 1						8	VCC
			+				Output
Inputs	2		±			7	Balance/Strobe
	3					6
VEE 4						5	Balance
		(Top View)

ORDERING INFORMATION

		Operating
	Device	Temperature Range	Package
	LM211D	TA = 25° to +85°C	SO±8
	LM311D	TA = 0° to +70°C	SO±8
	LM311N		Plastic DIP

Motorola, Inc. 1996

Rev 5

LM311 LM211

MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.)

Rating

Symbol

LM211

LM311

Unit

Total Supply Voltage

VCC + VEE

36

36

Vdc

Output to Negative Supply Voltage

VO ±VEE

50

40

Vdc

Ground to Negative Supply Voltage

VEE

30

30

Vdc

Input Differential Voltage

VID

±30

±30

Vdc

Input Voltage (Note 2)

Vin

±15

±15

Vdc

Voltage at Strobe Pin

±

VCC to VCC±5

VCC to VCC±5

Vdc

Power Dissipation and Thermal Characteristics

Plastic DIP

PD

625

mW

Derate Above TA = +25°C

1/qJA

5.0

mW/°C

Operating Ambient Temperature Range

TA

±25 to +85

0 to +70

°C

Operating Junction Temperature

TJ(max)

+150

+150

°C

Storage Temperature Range

Tstg

±65 to +150

±65 to +150

°C

ELECTRICAL CHARACTERISTICS (VCC = +15 V, VEE = ±15 V, TA = 25°C, unless otherwise noted [Note 1].)

LM211

LM311

Characteristic

Symbol

Unit

Min

Typ

Max

Min

Typ

Max

Input Offset Voltage (Note 3)

VIO

mV

RS ≤ 50 kW, TA = +25°C

±

0.7

3.0

±

2.0

7.5

RS ≤ 50 kW, Tlow ≤ TA ≤ Thigh*

±

±

4.0

±

±

10

Input Offset Current (Note 3) TA = +25°C

IIO

±

1.7

10

±

1.7

50

nA

Tlow ≤ TA ≤ Thigh*

±

±

20

±

±

70

Input Bias Current TA = +25°C

IIB

±

45

100

±

45

250

nA

Tlow ≤ TA ≤ Thigh*

±

±

150

±

±

300

Voltage Gain

AV

40

200

±

40

200

±

V/mV

Response Time (Note 4)

±

200

±

±

200

±

ns

Saturation Voltage

VOL

V

VID ≤ ±5.0 mV, IO = 50 mA, TA = 25°C

±

0.75

1.5

±

±

±

VID ≤±10 mV, IO = 50 mA, TA = 25°C

±

±

±

±

0.75

1.5

VCC ≥

4.5 V, VEE = 0, Tlow ≤ TA ≤ Thigh*

VID 6≤6.0 mV, Isink ≤ 8.0 mA

±

0.23

0.4

±

±

±

VID 6≤10 mV, Isink ≤ 8.0 mA

±

±

±

±

0.23

0.4

Strobe ºOnº Current (Note 5)

IS

±

3.0

±

±

3.0

±

mA

Output Leakage Current

VID ≥

5.0 mV, VO= 35 V, TA = 25°C, Istrobe= 3.0 mA

±

0.2

10

±

±

±

nA

VID ≥

10 mV, VO= 35 V, TA = 25°C, Istrobe= 3.0 mA

±

±

±

±

0.2

50

nA

VID ≥

5.0 mV, VO= 35 V, Tlow ≤ TA ≤ Thigh*

±

0.1

0.5

±

±

±

mA

Input Voltage Range (Tlow ≤ TA ≤ Thigh*)

VICR

±14.5

±14.7 to

+13.0

±14.5

±14.7 to

+13.0

V

13.8

13.8

Positive Supply Current

ICC

±

+2.4

+6.0

±

+2.4

+7.5

mA

Negative Supply Current

IEE

±

±1.3

±5.0

±

±1.3

±5.0

mA

* Tlow = ±25°C for LM211

Thigh = +85°C for LM211

= 0°C for LM311

= +70°C for LM311

NOTES: 1. Offset voltage, offset current and bias current specifications apply for a supply voltage range from a single 5.0 V supply up to ±15 V supplies.

2.This rating applies for ±15 V supplies. The positive input voltage limit is 30 V above the negative supply. The negative input voltage limit is equal to the negative supply voltage or 30 V below the positive supply, whichever is less.

3.The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with a 1.0 mA load. Thus, these parameters define an error band and take into account the ºworst caseº effects of voltage gain and input impedance.

4.The response time specified is for a 100 mV input step with 5.0 mV overdrive.

5.Do not short the strobe pin to ground; it should be current driven at 3.0 mA to 5.0 mA.

2	MOTOROLA ANALOG IC DEVICE DATA

LM311 LM211

Figure 1. Circuit Schematic

								8
								VCC
		1.3 k	1.3 k	800	800
	5	300
Balance					3.0 k
Balance/Strobe				100
	6	300
			3.7 k	3.7 k			5.0 k
								7
						300	200	Output
					250	900
							600
					1.3 k	800
	2
Inputs								1
					1.3 k	5.4 k		Gnd
	3			730	340			4
								VEE

			Figure 2. Input Bias Current
			versus Temperature
	140						VCC = +15 V
(nA)
	120						VEE = ±15 V
CURRENT
	100				Pins 5 & 6 Tied
BIAS					to VCC
	80		Normal
, INPUT
IB	40
I
	0
	±55	±25	0	25	50	75	100	125

TA, TEMPERATURE (°C)

Figure 4. Input Bias Current versus

Differential Input Voltage

140

(nA)

V

CC =

+15

V

120

V

EE =

±15

V

CURRENT

80

TA = +25°

C

BIAS

100

60

INPUT

40

,

IB

I

20

0

±12

±8.0

±4.0

0

4.0

8.0

12

16

±16

DIFFERENTIAL INPUT VOLTAGE (V)

MOTOROLA ANALOG IC DEVICE DATA

			Figure 3. Input Offset Current
			versus Temperature
	5.0
(nA)							VCC = +15 V
	4.0						VEE = ±15 V
CURRENT			Pins 5 & 6 Tied
	3.0			to VCC
INPUT, OFFSET
	1.0		Normal
	2.0
IO
I
	0
	±55	±25	0	25	50	75	100	125

TA, TEMPERATURE (°C)

Figure 5. Common Mode Limits

versus Temperature

	VCC			Referred to Supply Voltages
(V)	±0.5
LIMITS	±1.0
	±1.5
MODE
COMMON	0.4
	0.2
	VEE
	±55	±25	0	25	50	75	100	125
				TA, TEMPERATURE (°C)
								3