NSC LMV339MX, LMV339MTX, LMV339MT, LMV339M, LMV331M7X Datasheet

August 1999

LMV331 Single / LMV393 Dual / LMV339 Quad General Purpose, Low Voltage, TinyPack Comparators

General Description

The LMV393 and LMV339 are low voltage (2.7-5V) versions of the dual and quad comparators, LM393/339, which are specified at 5-30V. The LMV331 is the single version, which is available in space saving SC70-5 and SOT23-5 packages. SC70-5 is approximately half the size of SOT23-5.

The LMV393 is available in 8-pin SOIC and 8-pin MSOP. The LMV339 is available in 14-pin SOIC and 14-pin TSSOP.

The LMV331/393/339 is the most cost-effective solution where space, low voltage, low power and price are the primary specification in circuit design for portable consumer products. They offer specifications that meet or exceed the familiar LM393/339 at a fraction of the supply current.

The chips are built with National's advanced Submicron Silicon-Gate BiCMOS process. The LMV331/393/339 have bipolar input and output stages for improved noise performance.

Features

(For 5V Supply, Typical Unless Otherwise Noted)

nSpace Saving SC70-5 Package (2.0 x 2.1 x 1.0 mm)

nSpace Saving SOT23-5 Package (3.00 x 3.01 x

1.43mm)

nGuaranteed 2.7V and 5V Performance

n	Industrial Temperature Range	−40ÊC to +85ÊC
n	Low Supply Current	60µA/Channel
n Input Common Mode Voltage Range Includes Ground
n Low Output Saturation Voltage		200 mV

Applications

nMobile Communications

nNotebooks and PDA's

nBattery Powered Electronics

nGeneral Purpose Portable Device

nGeneral Purpose Low Voltage Applications

Connection Diagrams

5-Pin SC70-5/SOT23-5

14-Pin SO/TSSOP

DS100080-1

Top View

8-Pin SO/MSOP

DS100080-3

Top View

DS100080-2

Top View

TinyPack Voltage, Low Purpose, General Quad LMV339 / Dual LMV393 / Single LMV331

Comparators

© 1999 National Semiconductor Corporation

DS100080

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Ordering Information

	Temperature Range	Packaging		Transport	NSC
Package		Marking		Media	Drawing
	Industrial
	−40ÊC to +85ÊC
5-pin SC70-5	LMV331M7	C13	1k	Units Tape and Reel	MAA05
	LMV331M7X	C13	3k	Units Tape and Reel
5-pin SOT23-5	LMV331M5	C12	1k	Units Tape and Reel	MA05B
	LMV331M5X	C12	3k	Units Tape and Reel
8-pin Small Outline	LMV393M	LMV393M	Rails		M08A
	LMV393MX	LMV393M	2.5k Units Tape and Reel
8-pin MSOP	LMV393MM	LMV393	1k	UnitsTape and Reel	MUA08A
	LMV393MMX	LMV393	3.5k Units Tape and Reel
14-pin Small Outline	LMV339M	LMV339M	Rails		M14A
	LMV339MX	LMV339M	2.5k Units Tape and Reel
14-pin TSSOP	LMV339MT	LMV339MT	Rails		MTC14
	LMV339MTX	LMV339MT	2.5k Units Tape and Reel

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Absolute Maximum Ratings (Note 1)

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

ESD Tolerance (Note 2)
Human Body Model
LMV331/ 393/ 339	800V
Machine Model LMV331/339/393	120V
Differential Input Voltage	± Supply Voltage
Voltage on any pin	5.5V
(referred to V− pin)
Soldering Information
Infrared or Convection (20 sec)	235ÊC
Storage Temp. Range	−65ÊC to +150ÊC
Junction Temperature (Note 3)	150ÊC

Operating Ratings(Note 1)

Supply Voltage	2.7V to 5.0V
Temperature Range
LMV393, LMV339,	−40ÊC ≤ TJ ≤ +85ÊC
LMV331
Thermal Resistance (θJA)
M Package, 8-pin Surface	190ÊC/W
Mount
M Package, 14-pin Surface	145ÊC/W
Mount
MTC Package, 14-pin	155ÊC/W
TSSOP
MAA05 Package, 5-pin	478ÊC/W
SC70-5
M05A Package 5 -pin	265ÊC/W
SOT23-5
MM Package, 8-pin Mini	235ÊC/W
Surface Mount

2.7V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 2.7V, V−					= 0V. Boldface limits apply at the temperature
extremes.
Symbol		Parameter	Conditions		Typ	LMV331/	Units
				(Note 4)		393/339
						Limit
						(Note 5)
VOS		Input Offset Voltage			1.7	7	mV
							max
TCVOS		Input Offset Voltage			5		µV/ÊC
		Average Drift
IB		Input Bias Current			10	250	nA max
						400
IOS		Input Offset Current			5	50	nA max
						150
VCM		Input Voltage Range			−0.1		V
					2.0		V
VSAT		Saturation Voltage	Isink ≤ 1mA		200		mV
IO		Output Sink Current	VO ≤ 1.5V		23	5	mA min
IS		Supply Current	LMV331		40	100	µA max
			LMV393		70	140	µA max
			Both Comparators
			LMV339		140	200	µA max
			All four Comparators
		Output Leakage Current			.003	1	µA max

2.7V AC Electrical Characteristics

TJ = 25ÊC, V+ = 2.7V, RL = 5.1 kΩ, V− = 0V.

Symbol	Parameter	Conditions	Typ	Units
			(Note 4)
tPHL	Propagation Delay (High to Low)	Input Overdrive =10 mV	1000	ns
		Input Overdrive =100 mV	350	ns
tPLH	Propagation Delay (Low to High)	Input Overdrive =10 mV	500	ns
		Input Overdrive =100 mV	400	ns

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5V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, V+ = 5V, V−					= 0V. Boldface limits apply at the temperature
extremes.
Symbol		Parameter	Conditions		Typ	LMV331/	Units
					(Note 4)	393/339
						Limit
						(Note 5)
VOS		Input Offset Voltage			1.7	7	mV
						9	max
TCVOS		Input Offset Voltage			5		µV/ÊC
		Average Drift
IB		Input Bias Current			25	250	nA max
						400
IOS		Input Offset Current			2	50	nA max
						150
VCM		Input Voltage Range			−0.1		V
					4.2		V
AV		Voltage Gain			50	20	V/mV min
Vsat		Saturation Voltage	Isink ≤ 4 mA		200	400	mV
						700	max
IO		Output Sink Current	VO ≤ 1.5V		84	10	mA
IS		Supply Current	LMV331		60	120	µA max
						150
			LMV393		100	200	µA max
			Both Comparators			250
			LMV339		170	300	µA max
			All four Comparators			350
		Output Leakage Current			.003	1	µA max

5V AC Electrical Characteristics

TJ = 25ÊC, V+ = 5V, RL = 5.1 kΩ, V− = 0V.

Symbol	Parameter	Conditions	Typ	Units
			(Note 4)
tPHL	Propagation Delay (High to Low)	Input Overdrive =10 mV	600	ns
		Input Overdrive =100 mV	200	ns
tPLH	Propagation Delay (Low to High)	Input Overdrive =10 mV	450	ns
		Input Overdrive =100 mV	300	ns

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical characteristics.

Note 2: : Human body model, 1.5kΩ in series with 100 pF. Machine model, 200Ω in series with 100 pF.

Note 3: The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max) - TA)/θJA. All numbers apply for packages soldered directly into a PC board.

Note 4: Typical Values represent the most likely parametric norm.

Note 5: All limits are guaranteed by testing or statistical analysis.

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Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply, TA = 25ÊC

	Supply Current vs	Supply Current vs
	Supply Voltage Output High
		Supply Voltage Output Low	Output Voltage vs
	(LMV331)
		(LMV331)	Output Current at 5V Supply

DS100080-34	DS100080-33	DS100080-37

	Output Voltage vs	Input Bias Current vs	Response Time vs
	Output Current
		Supply Voltage	Input Overdrives
	at 2.7 Supply
			Negative Transition

	DS100080-36
DS100080-38	DS100080-42

	Response Time for	Response Time vs	Response Time for
	Input Overdrive
		Input Overdrives
			Input Overdrive
	Positive Transition
		Negative Transition
			Positive Transition

DS100080-43

DS100080-41

DS100080-40

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Simplified Schematic

DS100080-47

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Application Circuits

Basic Comparator

A basic comparator circuit is used for converting analog signals to a digital output. The LMV331/393/339 have an open-collector output stage, which requires a pull-up resistor to a positive supply voltage for the output to switch properly. When the internal output transistor is off, the output voltage will be pulled up to the external positive voltage.

The output pull-up resistor should be chosen high enough so as to avoid excessive power dissipation yet low enough to supply enough drive to switch whatever load circuitry is used on the comparator output. On the LMV331/393/339 the pull-up resistor should range between 1k to 10kΩ.

The comparator compares the input voltage (Vin) at the

non-inverting pin to the reference voltage (Vref) at the inverting pin. If Vin is less than Vref, the output voltage (Vo) is at the saturation voltage. On the other hand, if Vin is greater than

Vref, the output voltage (Vo) is at Vcc..

DS100080-26

DS100080-4

FIGURE 1. Basic Comparator

Comparator with Hysteresis

The basic comparator configuration may oscillate or produce a noisy output if the applied differential input voltage is near the comparator's offset voltage. This usually happens when the input signal is moving very slowly across the comparator's switching threshold. This problem can be prevented by the addition of hysteresis or positive feedback.

Inverting Comparator with Hysteresis

The inverting comparator with hysteresis requires a three resistor network that are referenced to the supply voltage Vcc of the comparator. When Vin at the inverting input is less than Va, the voltage at the non-inverting node of the comparator (Vin < Va), the output voltage is high (for simplicity assume Vo switches as high as Vcc). The three network resistors can be represented as R1//R3 in series with R2. The lower input trip voltage Va1 is defined as

When Vin is greater than Va (Vin Va), the output voltage is low very close to ground. In this case the three network resistors can be presented as R2//R3 in series with R1. The upper trip voltage Va2 is defined as

The total hysteresis provided by the network is defined as Va = Va1 - Va2

To assure that the comparator will always switch fully to Vcc and not be pulled down by the load the resistors values should be chosen as follow:

Rpull-up << Rload and R1 > Rpull-up.

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