Datasheet LM393J Datasheet (NSC)

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

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

August 2002

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 include limit comparators, 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 TTL and 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.

The LM393 and LM2903 parts are available in National’s
innovative thin micro SMD package with 8 (12 mil) large
bumps.

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

drift over temperature

OS

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

n Available in the 8-Bump (12 mil) micro SMD package
n See AN-1112 for micro SMD considerations

±

1.0V to±18V

±

±

3mV

5nA

Squarewave Oscillator Non-Inverting Comparator with Hysteresis

00570909

00570938

© 2002 National Semiconductor Corporation DS005709 www.national.com

Schematic and Connection Diagrams

LM193/LM293/LM393/LM2903

Metal Can Package Dual-In-Line/SOIC Package

00570902

00570903

micro SMD micro SMD Marking

00570945

Top View

Top View

00570901

00570946

www.national.com 2

LM193/LM293/LM393/LM2903

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

<

−0.3V) (Note 3) 50 mA

IN

Power Dissipation (Note 1)

Molded DIP 780 mW

Metal Can 660 mW

Small Outline Package 510 mW

micro SMD Pacakge 568mW

Output Short-Circuit to Ground

(Note 2) Continuous

Operating Temperature Range

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

LM393 0˚C to +70˚C

LM293 −25˚C to +85˚C

Electrical Characteristics

(V+=5V, TA= 25˚C, unless otherwise stated)

Parameter Conditions LM193A Units

Min Typ Max

Input Offset Voltage (Note 9) 1.0 2.0 mV

Input Bias Current I

Input Offset Current I

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

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

IN

Range, V

(+)−IIN(−) VCM= 0V 3.0 25 nA

IN

=

L

≥15 kΩ,V+=15V 50 200 V/mV

L

V

=1Vto11V

O

=TTL Logic Swing, V

IN

=5V, RL=5.1 kΩ

RL

=5V, RL=5.1 kΩ (Note 7) 1.3 µs

RL

(−)=1V, VIN(+)=0, VO≈1.5V 6.0 16 mA

IN

(−)=1V, VIN(+)=0, I

IN

(−)=0, VIN(+)=1V, VO=5V 0.1 nA

IN

∞

= 0V (Note 5)

CM

+

−1.5 V

V+=5V 0.4 1 mA

+

V

=36V 1 2.5 mA

=1.4V 300 ns

REF

≤4 mA 250 400 mV

SINK

Electrical Characteristics

(V+=5V, TA= 25˚C, unless otherwise stated)

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

Input Common Mode V+ = 30V (Note 6) 0 V+−1.5 0 V+−1.5 0 V+−1.5 V

Voltage Range

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

IN

Linear Range, V

(+)−IIN(−) VCM= 0V 3.0 25 5.0 50 5.0 50 nA

IN

= 0V (Note 5)

CM

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Electrical Characteristics (Continued)

(V+=5V, TA= 25˚C, unless otherwise stated)

Parameter Conditions LM193 LM293, LM393 LM2903 Units

Min Typ Max Min Typ Max Min Typ Max

Supply Current R

Voltage Gain R

Large Signal Response V

Time V

LM193/LM293/LM393/LM2903

Response Time V

Output Sink Current V

Saturation Voltage V

Output Leakage Current V

∞

=

L

≥15 kΩ,V+=15V 50 200 50 200 25 100 V/mV

L

V

=1Vto11V

O

=TTL Logic Swing, V

IN

=5V, RL=5.1 kΩ

RL

=5V, RL=5.1 kΩ (Note 7) 1.3 1.3 1.5 µs

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, VO=5V 0.1 0.1 0.1 nA

IN

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

=1.4V 300 300 300 ns

REF

≤4 mA 250 400 250 400 250 400 mV

SINK

Electrical Characteristics

(V+ = 5V) (Note 4)

Parameter Conditions LM193A Units

Min Typ Max

Input Offset Voltage (Note 9) 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 nA

IN

V

=0V (Note 5)

CM
+

V

=30V (Note 6) 0 V+−2.0 V

Voltage Range

Saturation Voltage VIN(−)=1V, VIN(+)=0, I

Output Leakage Current V

(−)=0, V

IN

Differential Input Voltage Keep All V

=0V 100 nA

≤4 mA 700 mV

SINK

=1V, VO=30V 1.0 µA

IN(+)

’s≥0V (or V−, if Used), (Note 8) 36 V

IN

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

IN

Linear Range, V
(Note 5)

+

Input Common Mode

=30V (Note 6) 0 V+−2.0 0 V+−2.0 0 V+−2.0 V

V

Voltage Range

Saturation Voltage VIN(−)=1V, VIN(+)=0,

≤4mA

I

SINK

Output Leakage Current V

(−)=0, V

IN

Differential Input Voltage Keep All V

Used), (Note 8)

Note 1: For operating at high temperatures, the LM393 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 must 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 (P
provided the output transistors are allowed to saturate.

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

+

=0V 100 150 50 200 nA

300 400 200 500 nA

=0V

CM

700 700 400 700 mV

=1V, VO=30V 1.0 1.0 1.0 µA

IN(+)

’s≥0V (or V−,if

IN

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

+

.

36 36 36 V

≤100 mW),

D

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Electrical Characteristics (Continued)

on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+voltage level (or to ground for a large overdrive) for the time
duration 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

−25˚C≤T

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

A

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
comparator 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+.

.1.4V, RS=0Ω with V+from 5V to 30V; and over the full input common-mode range (0V to V+−1.5V), at 25˚C.

O

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

A

Ordering Information

Package Temperature Range Part Number NSC Drawing

*

**

H08C

*

**

J08A

N08E

M08A

TLA08AAA

−55˚C to 125˚C

8-Pin Metal Can

−25˚C to 85˚C LM293H

0˚C to 70˚C LM393H

8-Pin Ceramic DIP −55˚C to 125˚C

8-Pin Molded DIP

0˚C to 70˚C LM393N

−40˚C to 85˚C LM2903N

0˚C to 70˚C

8-Pin SOIC

−40˚C to 85˚C

8-Bump (12 mils)

micro SMD

0˚C to 70˚C

−40˚C to 85˚C

LM193H

LM193H/883

LM193H-MLS

LM193AH-MLS

LM193AH-QMLV

LM193AH

LM193AH/883

LM193J/883

LM193AJ/883

LM193AJ-QMLV

LM193AJ-MLS

LM393M

LM393MX

LM2903M

LM2903MX

LM393TL

LM393TLX

LM2903ITL

LM2903ITLX

LM193/LM293/LM393/LM2903

Note:*Also available per LM38510/11202

**

See STD Mil DWG 5962-94526

Note:

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Typical Performance Characteristics LM193/LM293/LM393, LM193A

Supply Current Input Current

LM193/LM293/LM393/LM2903

00570925

Output Saturation Voltage

00570927

Response Time for Various Input Overdrives — Positive

Transition

00570926

Response Time for Various Input Overdrives — Negative

Transition

00570928

00570929

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Typical Performance Characteristics LM2903

Supply Current Input Current

LM193/LM293/LM393/LM2903

00570930

Output Saturation Voltage

00570932

Response Time for Various Input Overdrives — Positive

Transition

00570931

Response Time for Various Input Overdrives — Negative

Transition

00570933

00570934

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Application Hints

The LM193 series are high gain, wide bandwidth devices
which, like most comparators, can easily oscillate if the
output lead is inadvertently allowed to capacitively couple to
the inputs via stray capacitance. This shows up only during
the output voltage transition intervals as the comparator
change states. Power supply bypassing is not required to
solve this problem. Standard PC board layout is helpful as it
reduces stray input-output coupling. Reducing the input re­sistors to
finally, adding even a small amount (1.0 to 10 mV) of positive
feedback (hysteresis) causes such a rapid transition that

LM193/LM293/LM393/LM2903

oscillations due to stray feedback are not possible. Simply
socketing the IC and attaching resistors to the pins will cause
input-output oscillations during the small transition intervals
unless hysteresis is used. If the input signal is a pulse
waveform, with relatively fast rise and fall times, hysteresis is
not required.

All input pins of any unused comparators should be tied to
the negative supply.

The bias network of the LM193 series establishes a drain
current which is independent of the magnitude of the power
supply voltage over the range of from 2.0 V

It is usually unnecessary to use a bypass capacitor across
the power supply line.

Typical Applications (V

<

10 kΩ reduces the feedback signal levels and

DC

+

=5.0 VDC)

to 30 VDC.

The differential input voltage may be larger than V

+

without
damaging the device (Note 8). Protection should be provided
to prevent the input voltages from going negative more than

−0.3 V

(at 25˚C). An input clamp diode can be used as

DC

shown in the applications section.
The output of the LM193 series is the uncommitted collector

of a grounded-emitter NPN output transistor. Many collectors
can be tied together to provide an output OR’ing function. An
output pull-up resistor can be connected to any available
power supply voltage within the permitted supply voltage
range and there is no restriction on this voltage due to the
magnitude of the voltage which is applied to the V

+

terminal
of the LM193 package. The output can also be used as a
simple SPST switch to ground (when a pull-up resistor is not
used). The amount of current which the output device can
sink is limited by the drive available (which is independent of

+

) and the β of this device. When the maximum current limit

V
is reached (approximately 16mA), the output transistor will
come out of saturation and the output voltage will rise very
rapidly. The output saturation voltage is limited by the ap­proximately 60Ω r

of the output transistor. The low offset

SAT

voltage of the output transistor (1.0mV) allows the output to
clamp essentially to ground level for small load currents.

Basic Comparator Driving CMOS Driving TTL

00570935

00570936

00570937

Squarewave Oscillator Pulse Generator Crystal Controlled Oscillator

00570938

00570939

* For large ratios of R1/R2,

D1 can be omitted.

00570940

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Typical Applications (V

+

=5.0 VDC) (Continued)

Two-Decade High Frequency VCO

LM193/LM293/LM393/LM2903

V*= +30 V

+250 mVDC≤ VC≤ +50 V

700Hz ≤ fo≤ 100kHz

DC

Inverting Comparator with Hysteresis Output Strobing

00570941

DC

Basic Comparator Non-Inverting Comparator with Hysteresis

00570906

00570909

00570910

00570911

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Typical Applications (V

AND Gate OR Gate

LM193/LM293/LM393/LM2903

+

=5.0 VDC) (Continued)

00570912

Large Fan-in AND Gate Limit Comparator

00570914

Comparing Input Voltages of Opposite Polarity ORing the Outputs

00570913

00570915

00570916

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00570917

Typical Applications (V

+

=5.0 VDC) (Continued)

Zero Crossing Detector (Single Power Supply) One-Shot Multivibrator

LM193/LM293/LM393/LM2903

00570921

Bi-Stable Multivibrator One-Shot Multivibrator with Input Lock Out

00570924

Zero Crossing Detector Comparator With a Negative Reference

00570922

00570923

00570943

00570944

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Typical Applications (V

LM193/LM293/LM393/LM2903

+

=5.0 VDC) (Continued)

Time Delay Generator

Split-Supply Applications (V

+

=+15 VDCand V−=−15 VDC)

MOS Clock Driver

00570907

00570942

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Physical Dimensions inches (millimeters) unless otherwise noted

LM193/LM293/LM393/LM2903

Metal Can Package (H)

NS Package Number H08C

Ceramic Dual-In-Line Package

NS Package Number J08A

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

LM193/LM293/LM393/LM2903

SOIC Package

NS Package Number M08A

Molded Dual-In-Line Package (N)

NS Package N08E

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

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

NOTE: UNLESS OTHERWISE SPECIFIED

1. EPOXY COATING

2. 63Sn/37Pb EUTECTIC BUMP

3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.

4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION REMAINING PINS ARE NUMBERED
COUNTERCLOCKWISE.

5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X
PACKAGE HEIGHT.

6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.

IS PACKAGE WIDTH, X2IS PACKAGE LENGTH AND X3IS

1

8-Bump (12 mil) micro SMD Package

NS Package TLA08AAA

= 1.514mm X2= 1.514mm X3= 0.600mm

X

1

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