ON Semiconductor LM393, LM293, LM2903, LM2903V, NCV2903 Technical data

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LM393, LM293, LM2903,
LM2903V, NCV2903

Low Offset Voltage
Dual Comparators

The LM393 series are dual independent precision voltage
comparators capable of single or split supply operation. These devices
are designed to permit a common mode range−to−ground level with
single supply operation. Input offset voltage specifications as low as

2.0 mV make this device an excellent selection for many applications
in consumer, automotive, and industrial electronics.

Features

• Wide Single−Supply Range: 2.0 Vdc to 36 Vdc

• Split−Supply Range: ±1.0 Vdc to ±18 Vdc

• Very Low Current Drain Independent of Supply Voltage: 0.4 mA

• Low Input Bias Current: 25 nA

• Low Input Offset Current: 5.0 nA

• Low Input Offset Voltage: 5.0 mV (max) LM293/393

• Input Common Mode Range to Ground Level

• Differential Input Voltage Range Equal to Power Supply Voltage

• Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS

Logic Levels

• ESD Clamps on the Inputs Increase the Ruggedness of the Device

without Affecting Performance

• NCV Prefix for Automotive and Other Applications Requiring Site

and Control Changes

• Pb−Free Packages are Available

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8

1

8

1

8

1

PIN CONNECTIONS

1

Output A

2

−

GND

+

3

4

Inputs A

PDIP−8
N SUFFIX
CASE 626

SOIC−8
D SUFFIX

CASE 751

Micro8

DM SUFFIX

CASE 846A

8

V

CC

7

Output B

6

−

Inputs B

+

5

R1

4.6 k

V

CC

R4

Q3

2.0 k

F1

Q1

+ Input − Input Output

R2

2.1 k

Q4

Q5

Q8

Q2

Q9

Figure 1. Representative Schematic Diagram

(Diagram shown is for 1 comparator)

 Semiconductor Components Industries, LLC, 2004

October, 2004 − Rev. 15

Q6

Q10

Q11

Q12

Q15

(Top View)

DEVICE MARKING & ORDERING

INFORMATION

See detailed ordering and shipping information and marking

Q14

Q16

1 Publication Order Number:

information in the package dimensions section on pages 6
and 7 of this data sheet.

LM393/D

LM393, LM293, LM2903, LM2903V, NCV2903

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Voltage V
Input Differential Voltage Range V
Input Common Mode Voltage Range V
Output Short Circuit−to−Ground

Output Sink Current (Note 1)
Power Dissipation @ TA = 25°C

Derate above 25°C

Operating Ambient Temperature Range

LM293
LM393
LM2903
LM2903V, NCV2903 (Note 2)

Maximum Operating Junction Temperature

LM393, 2903, LM2903V

LM293, NCV2903
Storage Temperature Range T
ESD Protection at any Pin

− Human Body Model

− Machine Model

1/R

T

CC
IDR
ICR

I

SC

I

Sink

P

D



JA

T

A

J(max)

stg

V

esd

+36 or ±18 Vdc

36 Vdc

−0.3 to +36 Vdc
Continuous

mA

20

570

5.7

mW

mW/°C

°C

−25 to +85
0 to +70

−40 to +105

−40 to +125
°C

150
150

−65 to +150 °C

2000

200

V

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously . If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.

1. The maximum output current may be as high as 20 mA, independent of the magnitude of V
excessive heating and eventual destruction.

2.

NCV2903 is qualified for automotive use.

, output short circuits to VCC can cause

CC

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2

LM393, LM293, LM2903, LM2903V, NCV2903

ELECTRICAL CHARACTERISTICS (V

= 5.0 Vdc, T

CC

≤ TA ≤ T

low

, unless otherwise noted.)

high

LM2903, LM2903V,

NCV2903

Unit

mV

Characteristic Symbol

Input Offset Voltage (Note 4) V

LM293, LM393

Min Typ Max Min Typ Max

IO

TA = 25°C − ±1.0 ±5.0 − ±2.0 ±7.0
T

≤ TA ≤ T

low

high

Input Offset Current I

IO

− − 9.0 − 9.0 15
nA

TA = 25°C − ±5.0 ±50 − ±5.0 ±50
T

≤ TA ≤ T

low

high

Input Bias Current (Note 5) I

IB

− − ±150 − ±50 ±200
nA

TA = 25°C − 25 250 − 25 250
T

≤ TA ≤ T

low

high

Input Common Mode Voltage Range (Note 5) V

ICR

− − 400 − 200 500

V
TA = 25°C 0 − VCC −1.5 0 − VCC −1.5
T

≤ TA ≤ T

low

high

Voltage Gain A

VOL

0 − VCC −2.0 0 − VCC −2.0

50 200 − 25 200 − V/mV

RL ≥ 15 k, VCC = 15 Vdc, TA = 25°C

Large Signal Response Time − − 300 − − 300 − ns

Vin = TTL Logic Swing, V

= 1.4 Vdc

ref

VRL = 5.0 Vdc, RL = 5.1 k, TA = 25°C

Response Time (Note 7) t

TLH

− 1.3 − − 1.5 − s

VRL = 5.0 Vdc, RL = 5.1 k, TA = 25°C

Input Differential Voltage (Note 8) V

ID

− − V

CC

− − V

CC

V
All Vin ≥ GND or V− Supply (if used)

Output Sink Current I

Vin ≥ 1.0 Vdc, V

= 0 Vdc, VO ≤ 1.5 Vdc TA = 25°C

in+

Output Saturation Voltage V

Vin ≥ 1.0 Vdc, V
T

≤ TA ≤ T

low

high

in+

= 0, I

≤ 4.0 mA, TA = 25°C − 150 400 − − 400

Sink

Output Leakage Current I

V

in−

V

in−

T

= 0 V, V
= 0 V, V

≤ TA ≤ T

low

≥ 1.0 Vdc, VO = 5.0 Vdc, TA = 25°C − 0.1 − − 0.1 −

in+

≥ 1.0 Vdc, VO = 30 Vdc,

in+

high

Supply Current I

Sink

OL

OL

CC

6.0 16 − 6.0 16 − mA

mV

− − 700 − 200 700
nA

− − 1000 − − 1000

mA
RL = ∞ Both Comparators, TA = 25°C − 0.4 1.0 − 0.4 1.0
RL = ∞ Both Comparators, VCC = 30 V − − 2.5 − − 2.5

LM293 T
LM393 T
LM2903 T
LM2903V & NCV2903 T

= −25°C, T

low

= 0°C, T

low

= −40°C, T

low

high

high

= +70°C

= +85°C

= +105°C

high

= −40°C, T

low

= +125°C

high

NCV2903 is qualified for automotive use.

3. The maximum output current may be as high as 20 mA, independent of the magnitude of VCC, output short circuits to VCC can cause
excessive heating and eventual destruction.

4. At output switch point, VO1.4 Vdc, RS = 0  with VCC from 5.0 Vdc to 30 Vdc, and over the full input common mode range (0 V to

= −1.5 V).

V

CC

5. Due to the PNP transistor inputs, bias current will flow out of the inputs. This current is essentially constant, independent of the output state,
therefore, no loading changes will exist on the input lines.

6. Input common mode of either input should not be permitted to go more than 0.3 V negative of ground or minus supply. The upper limit of
common mode range is V

7. Response time is specified with a 100 mV step and 5.0 mV of overdrive. With larger magnitudes of overdrive faster response times are

−1.5 V.

CC

obtainable.

8. The comparator will exhibit proper output state if one of the inputs becomes greater than V
mode range. The low input state must not be less than −0.3 V of ground or minus supply.

, the other input must remain within the common

CC

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3

LM393, LM293, LM2903, LM2903V, NCV2903

LM293/393 LM2903

80

70

60

50

40

T

= +25° C

A

30

20

T

= +125°C

IB

I , INPUT BIAS CURRENT (nA)

A

10

0

0 5.0 10 15 20 25 30 35 40

VCC, SUPPLY VOLTAGE (Vdc) VCC, SUPPLY VOLTAGE (Vdc)

Figure 2. Input Bias Current versus

Power Supply Voltage

10

1.0

0.1
T

= +25° C

A

T

= +125°C

A

Out of
Saturation

T

= −55° C

A

T

= −55° C

A

T

A

T

= +70° C

A

= 0° C

80

T

= −40° C

70

A

60

50

40

30

20

IB

I , INPUT BIAS CURRENT (nA)

10

0

0 5.0 10 15 20 25 30 35 40

T

= 0° C

A

T

= +25° C

A

T

= +85° C

A

Figure 3. Input Bias Current versus

Power Supply Voltage

10

1.0

0.1
T

= +25° C

A

T

= +85° C

A

Out of
Saturation

0.01

OL

V , SATURATION VOLTAGE (Vdc)

0.001

0.01

1.0

0.8

0.6

0.4

CC

I , SUPPLY CURRENT (mA)

0.2

0

0.1 1.0 10 100

, OUTPUT SINK CURRENT (mA) I

I

Sink

Figure 4. Output Saturation Voltage

versus Output Sink Current

T

= −55° C

A

T

= 0° C

A

T

= +25° C

A

T

= +70° C

A

T

= +125°C

A

RL = 

5.0 10 15 20 25 30 35 40

VCC, SUPPLY VOLTAGE (Vdc) VCC, SUPPLY VOLTAGE (Vdc)

0.01

OL

V , SATURATION VOLTAGE (Vdc)

T

= −40° C

0.001

0.01 0.1 1.0 10 100

A

, OUTPUT SINK CURRENT (mA)

Sink

T

= 0° C

A

Figure 5. Output Saturation Voltage

versus Output Sink Current

1.2

1.0

0.8

0.6

CC

I , SUPPLY CURRENT (mA)

0.4

0 5.0 10 15 20 25 30 35 40

T

T

T

RL = 

= −40° C

A

T

= 0° C

A

= +25° C

A

= +85° C

A

Figure 6. Power Supply Current versus

Power Supply Voltage

Figure 7. Power Supply Current versus

Power Supply Voltage

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LM393, LM293, LM2903, LM2903V, NCV2903

APPLICATIONS INFORMATION

These dual comparators feature high gain, wide
bandwidth characteristics. This gives the device oscillation
tendencies if the outputs are capacitively coupled to the
inputs via stray capacitance. This oscillation manifests itself
during output transitions (V

to VOH). To alleviate this

OL

situation, input resistors <10 k should be used.

+15 V

R1

8.2 k

V

in

R1

D1

R4

220 k

6.8 k
R2

D1 prevents input from going negative by more than 0.6 V.

R5

R3 ≤

10

Figure 8. Zero Crossing Detector

(Single Supply)

R5

220 k



LM393



15 k

10 M

R3

R1 + R2 = R3

for small error in zero crossing.

10 k

The addition of positive feedback (<10 mV) is also
recommended. It is good design practice to ground all
unused pins.

Differential input voltages may be larger than supply
voltage without damaging the comparator’s inputs. Voltages
more negative than −0.3 V should not be used.

V

V

in

+V

CC



V

in

LM393



−V

EE

V

 0.4 V peak for 1% phase distortion ().

in(min)

10 k

− V

V

CC

V

O

EE

Figure 9. Zero Crossing Detector

(Split Supply)

in(min)







1.0 M

−

V

CC

51 k

51 k

0.001 F

LM393

+

51 k

V

CC

V

O

0

V

CC

R

L

10 k

V

O

t

Figure 10. Free−Running Square−Wave Oscillator

R

S

V

R1

ref

−

LM393

+

R2

‘‘ON’’ for t  t
where:

V

CC

R

L

V

CC

t

−

LM393

+

t = RC  n (

O

V

+ t

R

−

LM393

C

+ V

+

ref

C

V

ref

)

V

CC

Figure 11. Time Delay Generator

= R1 | | R2

R

S

(V

−V

) R1

CC

V

= V

+

th1

ref

V

= V

−

th2

ref

ref

R1 + R2 + R

(V

−VO Low) R1

ref

R1 + R2

L

V

CC

R

L

V

O

V

V

in

ref

0

V

O

0

V

V

C

ref

0

t

O

t

Figure 12. Comparator with Hysteresis

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5

LM393, LM293, LM2903, LM2903V, NCV2903

MARKING DIAGRAMS

8

LM393N

1

AWL

YYWW

PDIP−8

N SUFFIX

CASE 626

8

LMx93

ALYW

1

Micro8
DM SUFFIX
CASE 846A

8

LM2903N

YYWW

1

AWL

SOIC−8

D SUFFIX

CASE 751

8

2903

ALYW

8

x93

AYW

1

8

2903V

ALYW

8

2903
AYW

1

*

1

x = 2 or 3
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week

*This marking diagram also applies to NCV2903DR2.

1

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6

LM393, LM293, LM2903, LM2903V, NCV2903

ORDERING INFORMATION

Device Package Shipping

LM293D SOIC−8 98 Units / Rail
LM293DR2 SOIC−8
LM293DR2G SOIC−8

(Pb−Free)
LM293DMR2 Micro8 4000 Tape and Reel
LM393D SOIC−8
LM393DG SOIC−8

(Pb−Free)
LM393DR2 SOIC−8
LM393DR2G SOIC−8

(Pb−Free)
LM393N PDIP−8
LM393NG PDIP−8

(Pb−Free)
LM393DMR2 Micro8
LM393DMR2G Micro8

(Pb−Free)
LM2903D SOIC−8 98 Units / Reel
LM2903DR2 SOIC−8 2500 Units /Reel
LM2903N PDIP−8 50 Units / Rail
LM2903DMR2 Micro8 4000 Tape and Reel
LM2903VD SOIC−8
LM2903VDG SOIC−8

(Pb−Free)
LM2903VDR2 SOIC−8
LM2903VDR2G SOIC−8

(Pb−Free)
LM2903VN PDIP−8 50 Units / Rail
NCV2903DR2 (Note 9) SOIC−8
NCV2903DR2G (Note 9) SOIC−8

(Pb−Free)
NCV2903DMR2 (Note 9) Micro8 4000 Tape and Reel

2500 Units / Reel

98 Units / Rail

2500 Units / Reel

50 Units / Rail

4000 Tape and Reel

98 Units / Reel

2500 Units /Reel

2500 Tape and Reel

†

9. NCV2903 is qualified for automotive use.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

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7

NOTE 2

−T−

SEATING
PLANE

H

LM393, LM293, LM2903, LM2903V, NCV2903

58

−B−

14

F

−A−

C

N

D

G

0.13 (0.005) B

PACKAGE DIMENSIONS

PDIP−8

N SUFFIX

CASE 626−05

ISSUE L

NOTES:

1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.

2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).

3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

DIM MIN MAX MIN MAX

A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020

L

J

K

M

M

A

T

M

M

F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M −−− 10 −−− 10
N 0.76 1.01 0.030 0.040

INCHESMILLIMETERS



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8

LM393, LM293, LM2903, LM2903V, NCV2903

SOIC−8

D SUFFIX

CASE 751−07

ISSUE AC

−Y−

−Z−

−X−
A

58

B

1

S

0.25 (0.010)

4

M

M

Y

K

NOTES:

1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.

G

MILLIMETERS

C

SEATING
PLANE

0.10 (0.004)

H

D

0.25 (0.010) Z

M

SXS

Y

N

X 45



M

J

DIMAMIN MAX MIN MAX

4.80 5.00 0.189 0.197

B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.053 0.069
D 0.33 0.51 0.013 0.020

G 1.27 BSC 0.050 BSC

H 0.10 0.25 0.004 0.010
J 0.19 0.25 0.007 0.010
K 0.40 1.27 0.016 0.050

M 0 8 0 8



N 0.25 0.50 0.010 0.020
S 5.80 6.20 0.228 0.244

INCHES

SOLDERING FOOTPRINT*

1.52

0.060

7.0

0.275

0.6

0.024

4.0

0.155

1.270

0.050

SCALE 6:1



inches

mm



*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

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9

SEATING
PLANE

−T−

0.038 (0.0015)

PIN 1 ID

LM393, LM293, LM2903, LM2903V, NCV2903

PACKAGE DIMENSIONS

Micro8

DM SUFFIX

CASE 846A−02

ISSUE F

−A−

K

G

−B−

8 PL

D

0.08 (0.003) A

C

H

M

J

S

B

T

S

L

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT
EXCEED 0.15 (0.006) PER SIDE.

4. DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED 0.25 (0.010)
PER SIDE.

5. 846A−01 OBSOLETE, NEW STANDARD 846A−02.

DIM MIN MAX MIN MAX

A 2.90 3.10 0.114 0.122
B 2.90 3.10 0.114 0.122
C −−− 1.10 −−− 0.043
D 0.25 0.40 0.010 0.016
G 0.65 BSC 0.026 BSC
H 0.05 0.15 0.002 0.006

J 0.13 0.23 0.005 0.009

K 4.75 5.05 0.187 0.199

L 0.40 0.70 0.016 0.028

INCHESMILLIMETERS

SOLDERING FOOTPRINT*

1.04

8X

0.041

3.20

0.126

0.65

6X

0.0256

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

Micro8 is a trademark of International Rectifier.

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

0.38

0.015

8X

4.24

0.167

5.28

0.208

SCALE 8:1

mm



inches



PUBLICATION ORDERING INFORMATION

LITERATURE FULFILLMENT:

Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082−1312 USA

Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada
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Order Literature: http://www.onsemi.com/litorder

For additional information, please contact your
local Sales Representative.

LM393/D