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TEXAS INSTRUMENTS LP239 LP339 LP2901 handbook

1. This action is not destructive and normal output states are re established when the input voltage returns to a value more positive than 0 3 V at Ta 25 C 4 Short circuits between outputs to Vcc can cause excessive heating and eventual destruction 5 If the output transistors are allowed to saturate the low bias dissipation and the on off characteristics of the outputs keep the dissipation very small usually less than 100 mW DISSIPATION RATING TABLE Ta lt 25 C DERATING FACTOR TA 70 C TA 85 C PACKAGE POWER RATING ABOVE Ta 25 C POWER RATING POWER RATING 950 mW 7 6 mW C 1025 mW 8 2 mW C 1150 mW 9 2 mW C Wi TEXAS INSTRUMENTS 2 POST OFFICE BOX 655303 DALLAS TEXAS 75265 LP239 LP339 LP2901 LOW POWER QUAD DIFFERENTIAL COMPARATORS SLCS004A OCTOBER 1987 REVISED MAY 1988 recommended operating conditions LP239 LP339 LP2901 UNIT Vcc Supply voltage Vec 5V Common mode input voltage Vcc 30V 28 Voc 5V 3 Input voltage Yoo 30Y Operating free air temperature PARAMETER TEST CONDITIONS Tmt Voc 5 V to 30 V Vo 2V 25 C VIO Input offset voltage RS 0 he er lio Input offset current nput offset curren ia Full range 25 C 118 Input bias current See Note 7 Full range C 5 Common mode input voltage a aso VICR range P g Single supply oto Full range Voc 2 Large signal differential voltage A AVD amplification Voc 15 V RL 15 kQ Vo 2V 25
2. C 0 30 Output sink current See Note 8 Full range Output leakage current O gt Differential input voltage lt 0 or Vcc on split supplies F F range is 25 C to 85 C for the LP239 0 C to 70 C for the LP339 and 40 C to 85 C for the LP2901 NOTES 6 Vjo is measured over the full common mode input voltage range 7 Because ofthe p n p input stage the direction of the currentis out of the device This current is essentially constant i e independent of the output state No loading change exists on the reference or input lines as long as the common mode input voltage range is not exceeded 8 The output sink current is a function of the output voltage These devices have a bimodal output section that allows them to sink via a Darlington connection large currents at output voltages greater than 1 5 V and smaller currents at output voltages less than 1 5 V switching characteristics Vcc 5 V Ta 25 C RL connected to 5 V a 5 1 KQ PARAMETER TEST CONDITIONS TYP MAX UNIT Large signal response time gt TTL logic swing Vref 1 4 V wi TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 3 LP239 LP339 LP2901 LOW POWER QUAD DIFFERENTIAL COMPARATORS SLCS004A OCTOBER 1987 REVISED MAY 1988 APPLICATION INFORMATION Figure 1 shows the basic configuration for using the LP239 LP339 or LP2901 comparator Figure 2 shows the diagram for using one of these comparators as a CMOS dr
3. LP239 LP339 LP2901 LOW POWER QUAD DIFFERENTIAL COMPARATORS SLCS004A OCTOBER 1987 REVISED MAY 1988 Ultralow Power Supply Current D J OR N PACKAGE Drain 60 uA Typ TOP VIEW e Low Input Biasing Current 3nA e Low Input Offset Current 0 5 nA OUT Sat eS 20UT 40UT e Low Input Offset Voltage 2 mV Vcc GND e Common Mode Input Voltage Includes 2IN AIN Ground 2IN 4IN e Output Voltage Compatible With MOS and 1IN SIN CMOS Logic 11N 3IN e High Output Sink Current Capability 30 mA at Vo 2V Power Supply Input Reverse Voltage Protected e Single Power Supply Operation e Pin for Pin Compatible With LM239 LM339 LM2901 description The LP239 LP339 LP2901 are low power quadruple differential comparators Each device consists of four independent voltage comparators designed specifically to operate from a single power supply and typically to draw 60 uA drain current over a wide range of voltages Operation from split power supplies is also possible and the ultralow power supply drain current is independent of the power supply voltage Applications include limit comparators simple analog to digital converters pulse generators squarewave generators time delay generators voltage controlled oscillators multivibrators and high voltage logic gates The LP239 LP339 LP2901 were specifically designed to interface with the CMOS logic family The ultralow power supply current makes these p
4. Q3 Vo Q1 Q2 Figure 3 Output Section Schematic Diagram ki TEXAS INSTRUMENTS 4 POST OFFICE BOX 655303 DALLAS TEXAS 75265 LP239 LP339 LP2901 LOW POWER QUAD DIFFERENTIAL COMPARATORS SLCS004A OCTOBER 1987 REVISED MAY 1988 APPLICATION INFORMATION Without transistor Q3 if the output voltage were allowed to drop below 0 8 V transistor Q1 would saturate and the output current would drop to zero The circuit would be unable to pull low current loads down to ground or the negative supply if used Transistor Q3 has been included to bypass transistor Q1 under these conditions and apply the current l1 directly to the base of Q2 The output sink current is now approximately 11 times the hee of Q2 700 A at Vo 0 4 V The output of the devices exhibit a bimodal characteristic with a smooth transition between modes In both cases the output is an uncommitted collector Several outputs can be tied together to provide a dot logic function An output pullup resistor can be connected to any available power supply voltage within the permitted power supply range and there is no restriction on this voltage based on the magnitude of the voltage that is supplied to Vcc of the package Wi TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 5 IMPORTANT NOTICE Texas Instruments and its subsidiaries Tl reserve the right to make changes to their products or to discontinue any product or service without no
5. iver Vcc Vcc 30 ka IN 100 ko OUT IN 3 oie IN 1 4 LP239 LP339 IN e or LP2901 Figure 1 Basic Comparator 1 4 LP239 LP339 1 4 SN54 74LS00 or or LP2901 1 4 SN54 74ALS1000A Figure 2 CMOS Driver All pins of any unused comparators should be grounded The bias network of the LP239 LP339 and LP2901 establishes a drain current that is independent of the magnitude of the power supply voltage over the range of 2 V to 30 V It is usually necessary to use a bypass capacitor across the power supply line The differential input voltage may be larger than Vcc without damaging the device Protection should be provided to prevent the input voltages from going negative by more than 0 3 V The output section has two distinct modes of operation a Darlington mode and a ground emitter mode This unique drive circuit permits the device to sink 30 mA at Vo 2 V in the Darlington mode and 700 uA at Vo 0 4 V in the ground emitter mode Figure 3 is a simplified schematic diagram of the output section The output section is configured in a Darlington connection ignoring Q3 If the output voltage is held high enough above 1 V Q1 is not saturated and the output currentis limited only by the product of the hg of Q1 the hfg of Q2 and 11 andthe 60 Q saturation resistance of Q2 The devices are capable of driving LEDs relays etc in this mode while maintaining an ultralow power supply current of 60 uA typically Vcc VO M 6 A
6. n TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or relating to any combination machine or process in which such semiconductor products or services might be or are used Tl s publication of information regarding any third party s products or services does not constitute Tl s approval warranty or endorsement thereof Copyright 1998 Texas Instruments Incorporated
7. roducts desirable in battery powered applications The LP239 is characterized for operation from 25 C to 85 C The LP339 is characterized for operation from 0 C to 70 C The LP2901 is characterized for operation from 40 C to 85 C AVAILABLE OPTIONS D N J 0 C to 70 C LP339D LP339N LP339J 25 C to 85 C LP239D LP239N LP239J 40 C to 85 C LP2901D LP2901N LP2901J The D package is available taped and reeled Add R suffix to device type when ordering e g LP339DR PRODUCTION DATA information is current as of publication date Copyright O 1988 Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments e eA Production processing does not necessarily include vi TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 1 LP239 LP339 LP2901 LOW POWER QUAD DIFFERENTIAL COMPARATORS SLCS004A OCTOBER 1987 REVISED MAY 1988 schematic diagram each comparator Vcc les ES spa ora end h 4 h 4 IN OUT IN Da Da ar GND absolute maximum ratings over operating free air temperature range unless otherwise noted t Supply voltage Voc see Note 1 ooooccccccncccnnrr rrerr eee 36 V Differential input voltage Vip see Note 2 ooooooccccocccccccoc nennen nennen 36 V Input voltage range V either input ek tenets 0 3 V to 36 V Input current Vj s 0 3 V see No
8. te 3 1 eee eens 50mA Duration of output short circuit to ground see Note 4 0 cece eens Unlimited Continuous total dissipation see Note 5 0 0 cee eee See Dissipation Rating Table Operating free air temperature range Ta LP239 0 c cee eee 25 C to 85 C EP3S3I 42 44 oie dade nn ed 0 C to 70 C LP2901 ar act 40 C to 85 C Storage temperature range 2 cc te nee nenne nenn 65 C to 150 C Lead temperature range 1 6 mm 1 16 inch from case for 10 seconds D or N package 260 C Lead temperature range 1 6 mm 1 16 inch from case for 60 seconds J package 300 C T Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the recommended operating conditions is not implied Exposure to absolute maximum rated conditions for extended periods may affect device reliability NOTES 1 All voltage values except differential voltages are with respect to the network ground 2 Differential voltages are at IN with respect to IN 3 This input current only exists when the voltage at any of the inputs is driven negative The current flows through the collector base junction of the input clamping device In addition to the clamping device action there is lateral n p n parasitic transistor action
9. tice and advise customers to obtain the latest version of relevant information to verify before placing orders that information being relied on is current and complete All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement including those pertaining to warranty patent infringement and limitation of liability Tl warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty Specific testing of all parameters of each device is not necessarily performed except those mandated by government requirements CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH PERSONAL INJURY OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE CRITICAL APPLICATIONS TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMERS RISK In order to minimize risks associated with the customer s applications adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards Tl assumes no liability for applications assistance or customer product desig

TEXAS INSTRUMENTS LP239 LP339 LP2901 handbook

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