Ultralow Power Supply Current Drain Input Biasing Current Input Offset

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Ultralow Power Supply Current Drain Input Biasing Current Input Offset

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LP239, LP339, LP2901 LOW-POWER QUAD DIFFERENTIAL COMPARATORS
Ultralow Power Supply Current Drain Input Biasing Current Input Offset Current ±0.5 Input Offset Voltage Common-Mode Input Voltage Includes Ground Output Voltage Compatible With CMOS Logic High Output Sink-Current Capability Power Supply Input Reverse-Voltage Protected Single-Power-Supply Operation Pin-for-Pin Compatible With LM239, LM339, LM2901
PACKAGE (TOP VIEW)
1OUT 2OUT
3OUT 4OUT
description
LP239, LP339, LP2901 low-power quadruple differential comparators. Each device consists four independent voltage comparators designed specifically operate from single power supply typically draw 60-µA drain current over wide range voltages. Operation from split power supplies also possible ultralow power supply drain current independent power supply voltage. Applications include limit comparators, simple analog-to-digital converters, pulse generators, squarewave generators, time delay generators, voltage controlled oscillators, multivibrators, high-voltage logic gates. LP239, LP339, LP2901 were specifically designed interface with CMOS logic family. ultralow power supply current makes these products desirable battery-powered applications. LP239 characterized operation from 25°C 85°C. LP339 characterized operation from 70°C. LP2901 characterized operation from 40°C 85°C.
AVAILABLE OPTIONS PACKAGE VIOmax 25°C SMALL OUTLINE LP339D LP239D LP2901D PLASTIC LP339N LP239N LP2901N CERAMIC LP339J LP239J LP2901J
package available taped-and-reeled. suffix device type when ordering (e.g., LP339DR).
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
Copyright 1988, Texas Instruments Incorporated
POST OFFICE 655303
DALLAS, TEXAS 75265
LP239, LP339, LP2901 LOW-POWER QUAD DIFFERENTIAL COMPARATORS
schematic diagram (each comparator)
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, (see Note Differential input voltage, (see Note Input voltage range, (either input) Input current, (see Note Duration output short-circuit ground (see Note Unlimited Continuous total dissipation (see Note Dissipation Rating Table Operating free-air temperature range, LP239 25°C 85°C LP339 70°C LP2901 40°C 85°C Storage temperature range 65°C 150°C Lead temperature range (1/16 inch) from case seconds: package 260°C Lead temperature range (1/16 inch) from case seconds: package 300°C
Stresses beyond those listed under absolute maximum ratings cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated recommended operating conditions implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. NOTES: voltage values, except differential voltages, with respect network ground. Differential voltages with respect This input current only exists when voltage inputs driven negative. current flows through collector-base junction input clamping device. addition clamping device action, there lateral n-p-n parasitic transistor action. This action destructive normal output states re-established when input voltage returns value more positive than 25°C. Short circuits between outputs cause excessive heating eventual destruction. output transistors allowed saturate, bias dissipation on-off characteristics outputs keep dissipation very small (usually less than mW). DISSIPATION RATING TABLE PACKAGE 25°C POWER RATING 1025 1150 DERATING FACTOR ABOVE 25°C mW/°C mW/°C mW/°C 70°C POWER RATING 85°C POWER RATING
POST OFFICE 655303
DALLAS, TEXAS 75265
LP239, LP339, LP2901 LOW-POWER QUAD DIFFERENTIAL COMPARATORS
recommended operating conditions
LP239 Supply voltage Common-mode Common mode input voltage Input voltage Operating free-air temperature LP339 LP2901 UNIT
electrical characteristics, 25°C (unless otherwise noted)
PARAMETER Input offset voltage Input offset current Input bias current Note TEST CONDITIONS Note 25°C Full range 25°C Full range 25°C Full range 25°C Single supply Full range Note 25°C Full range 25°C 25°C ±0.5 UNIT
VICR
Common-mode input voltage range Large-signal differential voltage amplification
V/mV
Output sink current
Full range Differential input voltage split supplies) Supply current comparators Full range -25°C 85°C LP239, 70°C LP339, 40°C 85°C LP2901. NOTES: measured over full common-mode input voltage range. Because p-n-p input stage, direction current device. This current essentially constant (i.e., independent output state). loading change exists reference input lines long common-mode input voltage range exceeded. output sink current function output voltage. These devices have bimodal output section that allows them sink (via Darlington connection) large currents output voltages greater than smaller currents output voltages less than
Output leakage current
switching characteristics, 25°C, connected through
PARAMETER Large-signal response time Response time TEST CONDITIONS logic swing Vref swing, UNIT
POST OFFICE 655303
DALLAS, TEXAS 75265
LP239, LP339, LP2901 LOW-POWER QUAD DIFFERENTIAL COMPARATORS
APPLICATION INFORMATION Figure shows basic configuration using LP239, LP339, LP2901 comparator. Figure shows diagram using these comparators CMOS driver.
LP239, LP339, LP2901
Figure Basic Comparator
LP239, LP339, LP2901
SN54/74LS00 SN54/74ALS1000A
Figure CMOS Driver pins unused comparators should grounded. bias network LP239, LP339, LP2901 establishes drain current that independent magnitude power supply voltage over range usually necessary bypass capacitor across power supply line. differential input voltage larger than without damaging device. Protection should provided prevent input voltages from going negative more than output section distinct modes operation: Darlington mode ground-emitter mode. This unique drive circuit permits device sink Darlington mode ground-emitter mode. Figure simplified schematic diagram output section. output section configured Darlington connection (ignoring Q3). output voltage held high enough (above saturated output current limited only product saturation resistance devices capable driving LEDs, relays, etc. this mode while maintaining ultralow power supply current typically.
Figure Output-Section Schematic Diagram
POST OFFICE 655303
DALLAS, TEXAS 75265
LP239, LP339, LP2901 LOW-POWER QUAD DIFFERENTIAL COMPARATORS
APPLICATION INFORMATION Without transistor output voltage were allowed drop below transistor would saturate output current would drop zero. circuit would unable pull current loads down ground negative supply, used. Transistor been included bypass transistor under these conditions apply current directly base output sink current approximately times (700 output devices exhibit bimodal characteristic with smooth transition between modes. both cases, output uncommitted collector. Several outputs tied together provide logic function. output pullup resistor connected available power supply voltage within permitted power supply range, there restriction this voltage based magnitude voltage that supplied package.
POST OFFICE 655303
DALLAS, TEXAS 75265
LP239, LP339, LP2901 LOW-POWER QUAD DIFFERENTIAL COMPARATORS
POST OFFICE 655303
DALLAS, TEXAS 75265
IMPORTANT NOTICE Texas Instruments subsidiaries (TI) reserve right make changes their products discontinue product service without notice, advise customers obtain latest version relevant information verify, before placing orders, that information being relied current complete. products sold subject terms conditions sale supplied time order acknowledgement, including those pertaining warranty, patent infringement, limitation liability. warrants performance semiconductor products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques utilized extent deems necessary support this warranty. Specific testing parameters each device necessarily performed, except those mandated government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS INVOLVE POTENTIAL RISKS DEATH, PERSONAL INJURY, SEVERE PROPERTY ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). SEMICONDUCTOR PRODUCTS DESIGNED, AUTHORIZED, WARRANTED SUITABLE LIFE-SUPPORT DEVICES SYSTEMS OTHER CRITICAL APPLICATIONS. INCLUSION PRODUCTS SUCH APPLICATIONS UNDERSTOOD FULLY CUSTOMER'S RISK. order minimize risks associated with customer's applications, adequate design operating safeguards must provided customer minimize inherent procedural hazards. assumes liability applications assistance customer product design. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right covering relating combination, machine, process which such semiconductor products services might used. TI's publication information regarding third party's products services does constitute TI's approval, warranty endorsement thereof.
Copyright 1998, Texas Instruments Incorporated

Ultralow Power Supply Current Drain Input Biasing Current Input Offset

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