LM3302N - National Semiconductor

TL/H/5706

LM139/LM239/LM339/LM2901/LM3302

Low Power Low Offset Voltage Quad Comparators

November 1994

LM139/LM239/LM339/LM2901/LM3302

Low Power Low Offset Voltage Quad Comparators

General Description

The LM139 series consists of four independent precision

voltage comparators with an offset voltage specification as

low as 2 mV max for all four comparators. These were de-

signed 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 characteris-

tic 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 gen-

erators; wide range VCO; MOS clock timers; multivibrators

and high voltage digital logic gates. The LM139 series was

designed to directly interface with TTL and CMOS. When

operated from both plus and minus power supplies, they will

directly interface with MOS logicÐ where the low power

drain of the LM339 is a distinct advantage over standard

comparators.

Advantages

YHigh precision comparators

YReduced VOS drift over temperature

YEliminates need for dual supplies

YAllows sensing near GND

YCompatible with all forms of logic

YPower drain suitable for battery operation

Features

YWide supply voltage range

LM139 series, 2 VDC to 36 VDC or

g1V

DC to g18 VDC

LM139A series, LM2901 2 VDC to 28 VDC

LM3302 or g1V

DC to g14 VDC

YVery low supply current drain (0.8 mA) Ð independent

of supply voltage

YLow input biasing current 25 nA

YLow input offset current g5nA

and offset voltage g3mV

YInput common-mode voltage range includes GND

YDifferential input voltage range equal to the power

supply voltage

YLow output saturation voltage 250 mV at 4 mA

YOutput voltage compatible with TTL, DTL, ECL, MOS

and CMOS logic systems

Connection Diagrams

Dual-In-Line Package

TL/H/5706–2

Order Number LM139J, LM139J/883*, LM139AJ,

LM139AJ/883**, LM239J, LM239AJ, LM339J,

See NS Package Number J14A

Order Number LM339AM, LM339M or LM2901M

See NS Package Number M14A

Order Number LM339N, LM339AN,

LM2901N or LM3302N

See NS Package Number N14A

*Available per JM38510/11201

**Available per SMDÝ5962-8873901

TL/H/5706–26

Order Number LM139AE/883 or LM139E/883

See NS Package Number E20A

TL/H/5706–27

Order Number LM139AW/883 or LM139W/883*

See NS Package Number W14B

C1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

Absolute Maximum Ratings

(Note 10)If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications.

LM139/LM239/LM339

LM139A/LM239A/LM339A LM3302

LM2901

Supply Voltage, Va36 VDC or g18 VDC 28 VDC or g14 VDC

Differential Input Voltage (Note 8) 36 VDC 28 VDC

Input Voltage b0.3 VDC to a36 VDC b0.3 VDC to a28 VDC

Input Current (VINkb0.3 VDC),

(Note 3) 50 mA 50 mA

Power Dissipation (Note 1)

Molded DIP 1050 mW 1050 mW

Cavity DIP 1190 mW

Small Outline Package 760 mW

Output Short-Circuit to GND,

(Note 2) Continuous Continuous

Storage Temperature Range b65§Ctoa

150§Cb65§Ctoa

150§C

Lead Temperature

(Soldering, 10 seconds) 260§C 260§C

LM139/LM239/LM339

LM139A/LM239A/LM339A LM3302

LM2901

Operating Temperature Range b40§Ctoa

85§C

LM339/LM339A 0§Ctoa

70§C

LM239/LM239A b25§Ctoa

85§C

LM2901 b40§Ctoa

85§C

LM139/LM139A b55§Ctoa

125§C

Soldering Information

Dual-In-Line Package

Soldering (10 seconds) 260§C 260§C

Small Outline Package

Vapor Phase (60 seconds) 215§C 215§C

Infrared (15 seconds) 220§C 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 kXin series with 100 pF) 600V 600V

Electrical Characteristics (Vae5V

DC,T

Ae25§C, unless otherwise stated)

Parameter Conditions LM139A LM239A, LM339A LM139 LM239, LM339 LM2901 LM3302 Units

Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 1.0 2.0 1.0 2.0 2.0 5.0 2.0 5.0 2.0 7.0 3 20 mVDC

Input Bias Current IIN(a)or IIN(b)with Output in 25 100 25 250 25 100 25 250 25 250 25 500 nADC

Linear Range, (Note 5), VCMe0V

Input Offset Current IIN(a)bIIN(b),V

CMe0V 3.0 25 5.0 50 3.0 25 5.0 50 5 50 3 100 nADC

Input Common-Mode Vae30 VDC (LM3302, Vae28 VDC)0 V

1.5 0 Vab1.5 0 Vab1.5 0 Vab1.5 0 Vab1.5 0 Vab1.5 VDC

Voltage Range (Note 6)

Supply Current RLe%on all Comparators, 0.8 2.0 0.8 2.0 0.8 2.0 0.8 2.0 0.8 2.0 0.8 2.0 mADC

RLe%,V

36V, 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 1.0 2.5 mADC

(LM3302, Vae28 VDC)

Voltage Gain RLt15 kX,V

15 VDC 50 200 50 200 50 200 50 200 25 100 2 30 V/mV

Voe1V

DC to 11 VDC

Large Signal VINeTTL Logic Swing, VREFe300 300 300 300 300 300 ns

Response Time 1.4 VDC,V

RLe5V

DC,R

5.1 kX,

Response Time VRLe5V

DC,R

5.1 kX, 1.3 1.3 1.3 1.3 1.3 1.3 ms

(Note 7)

Output Sink Current VIN(b)e1V

DC,V

IN(a)e0, 6.0 16 6.0 16 6.0 16 6.0 16 6.0 16 6.0 16 mADC

VOs1.5 VDC

Electrical Characteristics (Vae5V

DC,T

Ae25§C, unless otherwise stated) (Continued)

Parameter Conditions LM139A LM239A, LM339A LM139 LM239, LM339 LM2901 LM3302 Units

Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max

Saturation Voltage VIN(b)e1V

DC,V

IN(a)e0, 250 400 250 400 250 400 250 400 250 400 250 500 mVDC

ISINKs4mA

Output Leakage VIN(a)e1V

DC,VIN(b)e0, 0.1 0.1 0.1 0.1 0.1 0.1 nADC

Current VOe5V

Electrical Characteristics (Vae5.0 VDC, Note 4)

Parameter Conditions LM139A LM239A, LM339A LM139 LM239, LM339 LM2901 LM3302 Units

Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 4.0 4.0 9.0 9.0 9 15 40 mVDC

Input Offset Current IIN(a)bIIN(b),V

CMe0V 100 150 100 150 50 200 300 nADC

Input Bias Current IIN(a)or IIN(b)with Output in 300 400 300 400 200 500 1000 nADC

Linear Range, VCMe0V (Note 5)

Input Common-Mode Vae30 VDC (LM3302, Vae28 VDC)0 V

2.0 0 Vab2.0 0 Vab2.0 Vab2.0 0 Vab2.0 0 Vab2.0 VDC

Voltage Range (Note 6)

Saturation Voltage VIN(b)e1V

DC,V

IN(a)e0, 700 700 700 700 400 700 700 mVDC

ISINKs4mA

Output Leakage Current VIN(a)e1V

DC,V

IN(b)e0, 1.0 1.0 1.0 1.0 1.0 1.0 mADC

VOe30 VDC, (LM3302, VOe28 VDC)

Differential Input Voltage Keep all VIN’st0V

DC (or Vb, 36 3636363628V

if used), (Note 8)

Note 1: For operating at high temperatures, the LM339/LM339A, LM2901, LM3302 must be derated based on a 125§C maximum junction temperature and a thermal resistance of 95§C/W which applies for the device soldered in a

printed circuit board, operating in a still air ambient. The LM239 and LM139 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 (PDs100 mW), provided the output transistors are allowed to saturate.

Note 2: Short circuits from the output to Vacan cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 20 mA independent of the magnitude of Va.

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 Vavoltage 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 b0.3 VDC (at 25§)C.

Note 4: These specifications are limited to b55§CsTAsa125§C, for the LM139/LM139A. With the LM239/LM239A, all temperature specifications are limited to b25§CsTAsa85§C, the LM339/LM339A temperature specifications

are limited to 0§CsTAsa70§C, and the LM2901, LM3302 temperature range is b40§CsTAsa85§C.

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 output so 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 Vab1.5V at 25§C, but either or both inputs can go

to a30 VDC without damage (25V for LM3302), independent of the magnitude of Va.

Note 7: The response time specified is 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 b0.3 VDC (or 0.3 VDC below the magnitude of the negative power supply, if used) (at 25§C).

Note 9: At output switch point, VOj1.4 VDC,R

0Xwith Vafrom 5 VDC to 30 VDC; and over the full input common-mode range (0 VDC to Vab1.5 VDC), at 25§C. For LM3302, Vafrom 5 VDC to 28 VDC.

Note 10: Refer to RETS139AX for LM139A military specifications and to RETS139X for LM139 military specifications.

Typical Performance Characteristics LM139/LM239/LM339, LM139A/LM239A/LM339A, LM3302

Supply Current Input Current Output Saturation Voltage

Response Time for Various

Input OverdrivesÐNegative

Transition

Response Time for Various

Input OverdrivesÐPositive

Transition

TL/H/5706–6

Typical Performance Characteristics LM2901

Supply Current Input Current Output Saturation Voltage

Response Time for Various

Input Overdrives-Negative

Transition

Response Time for Various

Input Overdrives-Positive

Transition

TL/H/5706–7

Application Hints

The LM139 series are high gain, wide bandwidth devices

which, like most comparators, can easily oscillate if the out-

put 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

changes 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 this input re-

sistors to k10 kXreduces the feedback signal levels and

finally, adding even a small amount (1 to 10 mV) of positive

feedback (hysteresis) causes such a rapid transition that

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 in-

tervals unless hysteresis is used. If the input signal is a

pulse waveform, with relatively fast rise and fall times, hys-

teresis is not required.

All pins of any unused comparators should be grounded.

The bias network of the LM139 series establishes a drain

current which is independent of the magnitude of the power

supply voltage over the range of from 2 VDC to 30 VDC.

It is usually unnecessary to use a bypass capacitor across

the power supply line.

The differential input voltage may be larger than Vawithout

damaging the device. Protection should be provided to pre-

vent the input voltages from going negative more than b0.3

VDC (at 25§C). An input clamp diode can be used as shown

in the applications section.

The output of the LM139 series is the uncommitted collector

of a grounded-emitter NPN output transistor. Many collec-

tors can be tied together to provide an output OR’ing func-

tion. 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 Va

terminal of the LM139A 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 Va) and the bof this device. When the

maximum current limit is reached (approximately 16 mA),

the output transistor will come out of saturation and the out-

put voltage will rise very rapidly. The output saturation volt-

age is limited by the approximately 60XRSAT of the output

transistor. The low offset voltage of the output transistor (1

mV) allows the output to clamp essentially to ground level

for small load currents.

Typical Applications (Vae5.0 VDC)

Basic Comparator

TL/H/5706–3

Driving CMOS

TL/H/5706–4

Driving TTL

TL/H/5706–5

AND Gate

TL/H/5706–8

OR Gate

TL/H/5706–9

Typical Applications (Vae15 VDC) (Continued)

One-Shot Multivibrator

TL/H/5706–10

Bi-Stable Multivibrator

TL/H/5706–11

One-Shot Multivibrator with Input Lock Out

TL/H/5706–12

Typical Applications (Vae15 VDC) (Continued)

Large Fan-In AND Gate

TL/H/5706–13

Pulse Generator

TL/H/5706–17

ORing the Outputs

TL/H/5706–15

Typical Applications (Vae15 VDC) (Continued)

Time Delay Generator

TL/H/5706–14

Non-Inverting Comparator with Hysteresis

TL/H/5706–18

Inverting Comparator with Hysteresis

TL/H/5706–19

Typical Applications (Vae15 VDC) (Continued)

Squarewave Oscillator

TL/H/5706–16

Comparing Input Voltages

of Opposite Polarity

TL/H/5706–20

Basic Comparator

TL/H/5706–21

Output Strobing

TL/H/5706–22

*Or open-collector logic gate without pull-up resistor

Limit Comparator

TL/H/5706–24

Crystal Controlled Oscillator

TL/H/5706–25

Typical Applications (Vae15 VDC) (Continued)

Two-Decade High-Frequency VCO

Vaea30 VDC

a250 mVDCsVCsa50 VDC

700 Hzsfos100 kHz

TL/H/5706–23

Typical Applications (Vae5V

DC) (Continued)

Transducer Amplifier

TL/H/5706–28

Zero Crossing Detector (Single Power Supply)

TL/H/5706–30

Split-Supply Applications (Vaea15 VDC and Vbeb15 VDC)

MOS Clock Driver

TL/H/5706–31

Split-Supply Applications (Vaea15 VDC and Vbeb15 VDC) (Continued)

Zero Crossing Detector

TL/H/5706–32

Comparator With a Negative

Reference

TL/H/5706–33

Schematic Diagram

TL/H/5706–1

Physical Dimensions inches (millimeters)

Order Number LM139AE/883 or LM139E/883

NS Package Number E20A

Ceramic Dual-In-Line Package (J)

Order Number LM139J, LM139J/883, LM139AJ,

LM139AJ/883, LM239J, LM239AJ, LM339J

NS Package Number J14A

Physical Dimensions inches (millimeters) (Continued)

S.O. Package (M)

Order Number LM339AM, LM339M or LM2901M

NS Package Number M14A

Molded Dual-In-Line Package (N)

Order Number LM339N, LM339AN, LM2901N or LM3302N

NS Package Number N14A

LM139/LM239/LM339/LM2901/LM3302

Low Power Low Offset Voltage Quad Comparators

Physical Dimensions inches (millimeters) (Continued)

Order Number LM139AW/883 or LM139W/883

NS Package Number W14B

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be reasonably expected to result in a significant injury

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