NSC LM393N, LM393MX, LM393H, LM293H, LM2903M Datasheet

LM193/LM293/LM393/LM2903
Low Power Low Offset Voltage Dual Comparators

General Description

The LM193 series consists of two independent precision
voltage comparators with an offset voltage specification as
low as 2.0 mV max for two comparators which were de­signed specifically to operate from a single power supply
over a wide range of voltages. Operation from split power
supplies is also possible and the low power supply current
drain is independent of the magnitude of the power supply
voltage. These comparators also have a unique characteris­tic in that the input common-mode voltage range includes
ground, even though operated from a single power supply
voltage.

Application areas includelimitcomparators,simple analog to
digital converters; pulse, squarewave and time delay gen­erators; wide range VCO; MOS clock timers; multivibrators
and high voltage digital logic gates. The LM193 series was
designed to directly interface with TTLand CMOS. When op­erated from both plus and minus power supplies, the LM193
series will directly interface with MOS logic where their low
power drain is a distinct advantage over standard compara­tors.

Advantages

n High precision comparators

n Reduced V
n Eliminates need for dual supplies
n Allows sensing near ground
n Compatible with all forms of logic
n Power drain suitable for battery operation

Features

n Wide supply

— Voltage range: 2.0V to 36V
— single or dual supplies:

n Very low supply current drain (0.4 mA) — independent

of supply voltage

n Low input biasing current: 25 nA
n Low input offset current:
n Maximum offset voltage:
n Input common-mode voltage range includes ground
n Differential input voltage range equal to the power

supply voltage

n Low output saturation voltage,: 250 mV at 4 mA
n Output voltage compatible with TTL, DTL, ECL, MOS

and CMOS logic systems

drift over temperature

OS

October 1999

±

1.0V to±18V

±

±

3mV

LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators

5nA

Schematic and Connection Diagrams

DS005709-2

© 1999 National Semiconductor Corporation DS005709 www.national.com

Schematic and Connection Diagrams (Continued)

Metal Can Package

LM193/LM293/LM393/LM2903

Order Number LM193H

LH193H/883 , LM193AH-QMLV

M193AH, LM193AH/883,

LM293H, LM293AH, LM393H

See NS Package Number H08C

Note:*Also available per JM38510/11202

**

Note:

See STD Mil DWG 5962-94526

or LM393AH

DS005709-3

*

**

Dual-In-Line Package

Order Number LM193J/883

LM193AJ/883, LM193AJ-QMLV

LM393J, LM393AJ,

LM393M, LM2903M, LM393N,

LM2903J or LM2903N

See NS Package Number J08A,

M08A or N08E

DS005709-1

*

**

www.national.com 2

Absolute Maximum Ratings (Note 10)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Supply Voltage, V
Differential Input Voltage (Note 8) 36V
Input Voltage −0.3V to +36V
Input Current (V
Power Dissipation (Note 1)

Molded DIP 780 mW
Metal Can 660 mW
Small Outline Package 510 mW

Output Short-Circuit to Ground

(Note 2) Continuous

Operating Temperature Range

LM393/LM393A 0˚C to +70˚C

+

<

−0.3V) (Note 3) 50 mA

IN

36V

LM193/LM193A −55˚C to +125˚C

LM2903 −40˚C to +85˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature

(Soldering, 10 seconds) +260˚C
Soldering Information

Dual-In-Line Package

Soldering (10 seconds) 260˚C

Small Outline Package 215˚C

Vapor Phase (60 seconds)
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.

ESD rating

(1.5 kΩ in series with 100 pF) 1300V

LM293/LM293A −25˚C to +85˚C

Electrical Characteristics

+

=

5V, T

=

25˚C, unless otherwise stated)

A

(V

Parameter Conditions LM193A LM293A, LM393A Units

Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 1.0 2.0 1.0 2.0 mV
Input Bias Current I

Input Offset Current I
Input Common Mode V+=30V (Note 6) 0 V

(+) or IIN(−) with Output In Linear 25 100 25 250 nA

IN

Range, V

(+)−IIN(−) V

IN

CM

=

0V (Note 5)

=

0V 3.0 25 5.0 50 nA

CM

+

−1.5 0 V+−1.5 V
Voltage Range
Supply Current R

Voltage Gain R

Large Signal Response V
Time V
Response Time V
Output Sink Current V
Saturation Voltage V
Output Leakage Current V

=

L

≥15 kΩ,V

L

V

O

=

IN
RL
RL

(−)=1V, VIN(+)=0, VO≈1.5V 6.0 16 6.0 16 mA

IN

(−)=1V, VIN(+)=0, I

IN

(−)=0, VIN(+)=1V, V

IN

+

=

∞

V

5V 0.4 1 0.4 1 mA

+

=

V

36V 1 2.5 1 2.5 mA

+

=

15V 50 200 50 200 V/mV

=

1V to 11V

TTL Logic Swing, V

=

=

5V, R

5.1 kΩ

L

=

=

5V, R

5.1 kΩ (Note 7) 1.3 1.3 µs

L

=

1.4V 300 300 ns

REF

≤4 mA 250 400 250 400 mV

SINK

=

5V 0.1 0.1 nA

O

LM193/LM293/LM393/LM2903

Electrical Characteristics

+

=

5V, T

=

25˚C, unless otherwise stated)

A

(V

Parameter Conditions LM193 LM293, LM393 LM2903 Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 1.0 5.0 1.0 5.0 2.0 7.0 mV
Input Bias Current I

Input Offset Current I

(+) or IIN(−) with Output In 25 100 25 250 25 250 nA

IN

Linear Range, V

(+)−IIN(−) V

IN

=

0V (Note 5)

CM

=

0V 3.0 25 5.0 50 5.0 50 nA

CM

Input Common Mode V+=30V (Note 6) 0 V+−1.5 0 V+−1.5 0 V+−1.5 V
Voltage Range
Supply Current R

=

∞

L

+

=

V

5V 0.4 1 0.4 1 0.4 1.0 mA

+

=

V

36V 1 2.5 1 2.5 1 2.5 mA

www.national.com3

Electrical Characteristics (Continued)

+

=

5V, T

=

25˚C, unless otherwise stated)

A

(V

Parameter Conditions LM193 LM293, LM393 LM2903 Units

Min Typ Max Min Typ Max Min Typ Max

+

Voltage Gain R

Large Signal Response V
Time V
Response Time V

LM193/LM293/LM393/LM2903

Output Sink Current V
Saturation Voltage V
Output Leakage Current V

≥15 kΩ,V

L

=

V

O

=

IN

=

RL

=

RL

(−)=1V, VIN(+)=0, VO≤1.5V 6.0 16 6.0 16 6.0 16 mA

IN

(−)=1V, VIN(+)=0, I

IN

(−)=0, VIN(+)=1V, V

IN

=

15V 50 200 50 200 25 100 V/mV

1V to 11V

TTL Logic Swing, V

=

5V, R

5.1 kΩ

L

=

5V, R

5.1 kΩ (Note 7) 1.3 1.3 1.5 µs

L

=

1.4V 300 300 300 ns

REF

≤4 mA 250 400 250 400 250 400 mV

SINK

=

5V 0.1 0.1 0.1 nA

O

Electrical Characteristics

(V+=5V) (Note 4)

Parameter Conditions LM193A LM293A, LM393A Units

Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 4.0 4.0 mV
Input Offset Current I
Input Bias Current I

Input Common Mode

IN(+)−IIN(−),VCM

(+) or IIN(−) with Output in Linear Range, 300 400 nA

IN

=

V

0V (Note 5)

CM
+

=

V

30V (Note 6) 0 V

Voltage Range
Saturation Voltage V
Output Leakage Current V

(−)=1V, VIN(+)=0, I

IN

(−)=0, V

IN

Differential Input Voltage Keep All V

=

0V 100 150 nA

+

−2.0 0 V+−2.0 V

≤4 mA 700 700 mV

SINK

=

=

1V, V

IN(+)

’s≥0V (or V−, if Used), (Note 8) 36 36 V

IN

30V 1.0 1.0 µA

O

Electrical Characteristics

(V+=5V) (Note 4)

Parameter Conditions LM193 LM293, LM393 LM2903 Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 9 9 9 15 mV

=

Input Offset Current I
Input Bias Current I

IN(+)−IIN(−),VCM

(+) or IIN(−) with Output in Linear 300 400 200 500 nA

IN

Range, V

+

Input Common Mode

=

V

30V (Note 6) 0 V

Voltage Range
Saturation Voltage V
Output Leakage Current V

(−)=1V, VIN(+)=0, I

IN

(−)=0, V

IN

Differential Input Keep All V
Voltage (Note 8)

Note 1: For operating at high temperatures, the LM393/LM393A and LM2903 must be derated based on a 125˚C maximum junction temperature and a thermal re­sistance of 170˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The LM193/LM193A/LM293/LM293Amust be de­rated based on a 150˚C maximum junction temperature. The low bias dissipation and the “ON-OFF” characteristic of the outputs keeps the chip dissipation very small

≤100 mW), provided the output transistors are allowed to saturate.

(P

D

Note 2: Short circuits from the output to V
current is approximately 20 mA independent of the magnitude of V

Note 3: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP tran­sistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the
IC chip. This transistor action can cause the output voltages of the comparators to go to the V
that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value
greater than −0.3V.

Note 4: These specifications are limited to −55˚C≤T

≤+85˚C and the LM393/LM393A temperature specifications are limited to 0˚C≤TA≤+70˚C. The LM2903 is limited to −40˚C≤TA≤+85˚C.

−25˚C≤T

A

www.national.com 4

0V 100 150 50 200 nA

=

0V (Note 5)

CM

≤4 mA 700 700 400 700 mV

SINK

=

=

1V, V

IN(+)

’s≥0V (or V−, if Used), 36 36 36 V

IN

+

can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output

30V 1.0 1.0 1.0 µA

O

+

.

≤+125˚C, for the LM193/LM193A. With the LM293/LM293A all temperature specifications are limited to

A

+

−2.0 0 V+−2.0 0 V+−2.0 V

+

voltage level (or to ground for a large overdrive) for the time duration

Electrical Characteristics (Continued)

Note 5: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the outputso

no loading change exists on the reference or input lines.
Note 6: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V.The upper end of the common-mode

voltage range is V
Note 7: The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained, see typical performance

characteristics section.
Note 8: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the compara-

tor will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the magnitude of the negative power supply, if used).

Note 9: At output switch point, V
Note 10: Refer to RETS193AX for LM193AH military specifications and to RETS193X for LM193H military specifications.

+

−1.5V at 25˚C, but either or both inputs can go to 36V without damage, independent of the magnitude of V+.

+

=

≅

O

1.4V, R

S

from 5V to 30V; and over the full input common-mode range (0V to V+−1.5V), at 25˚C.

0Ω with V

Typical Performance Characteristics LM193/LM293/LM393, LM193A/LM293A/LM393A

LM193/LM293/LM393/LM2903

Supply Current

Response Time for Various
Input Overdrives — Negative
Transition

DS005709-25

Input Current

DS005709-28

Output Saturation Voltage

DS005709-26

Response Time for Various
Input Overdrives — Positive
Transition

DS005709-27

DS005709-29

Typical Performance Characteristics LM2903

Supply Current

DS005709-30

Input Current

DS005709-31

Output Saturation Voltage

DS005709-32

www.national.com5