NSC LM393J Datasheet

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

www.national.com3

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

www.national.com 4

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:

www.national.com5