LM161/LM261/LM361High Speed Differential ComparatorsGeneral DescriptionThe LM161/LM261/LM361is a very high speed differential input,complementary TTL output voltage comparator with improved characteristics over the SE529/NE529for which it is a pin-for-pin replacement.The device has been optimized for greater speed performance and lower input offset volt-age.Typically delay varies only 3ns for over-drive variations of 5mV to 500mV.It may be operated from op amp supplies (±15V).Complementary outputs having maximum skew are pro-vided.Applications involve high speed analog to digital con-verters and zero-crossing detectors in disk file systems.Featuresn Independent strobesn Guaranteed high speed:20ns max n Tight delay matching on both outputs n Complementary TTL outputsn Operates from op amp supplies:±15V n Low speed variation with overdrive variation n Low input offset voltagenVersatile supply voltage rangeConnection DiagramsDual-In-Line PackageDS005708-2Top ViewOrder Number LM161J LM361M or LM361NSee NS Package Number M14A or N14AMetal Can PackageDS005708-3Order Number LM161H/883(Note 1),or LM361HSee NS Package Number H10CNote 1:Also available per SMD #5962-8757203May 1999LM161/LM261/LM361High Speed Differential Comparators©1999National Semiconductor Corporation Logic DiagramDS005708-4 *Output is low when current is drawn from strobe pin.2Absolute Maximum Ratings(Note2)If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.Positive Supply Voltage,V++16V Negative Supply Voltage,V−−16V Gate Supply Voltage,V CC+7V Output Voltage+7V Differential Input Voltage±5V Input Common Mode Voltage±6V Power Dissipation600mW Storage Temperature Range−65˚C to+150˚C Operating Temperature Range T MIN T MAX LM161−55˚C to+125˚C LM261−25˚C to+85˚C LM3610˚C to+70˚C Lead Temp.(Soldering,10seconds)260˚C For Any Device Lead Below V−0.3V Operating ConditionsMin Typ Max Supply Voltage V+LM161/LM2615V15V LM3615V15V Supply Voltage V−LM161/LM261−6V−15V LM361−6V−15V Supply Voltage V CCLM161/LM261 4.5V5V 5.5V LM361 4.75V5V 5.25VESD Tolerance(Note6)1600V Soldering InformationDual-In-Line PackageSoldering(10seconds)260˚C Small Outline PackageVapor Phase(60seconds)215˚C Infrared(15seconds)220˚C See AN-450“Surface Mounting Methods and Their Effect on Product Reliability”for other methods of soldering surface mount devices.Electrical Characteristics(V+=+10V,V CC=+5V,V−=−10V,T MIN≤T A≤T MAX,unless noted)LimitsParameter Conditions LM161/LM261LM361UnitsMin Typ Max Min Typ MaxInput Offset Voltage1315mV Input Bias Current T A=25˚C510µA2030µA Input Offset Current T A=25˚C22µA35µA Voltage Gain T A=25˚C33V/mV Input Resistance T A=25˚C,f=1kHz2020kΩLogical“1”Output Voltage V CC=4.75V, 2.4 3.3 2.4 3.3VI SOURCE=−0.5mALogical“0”Output Voltage V CC=4.75V,0.40.4VI SINK=6.4mAStrobe Input“1”Current V CC=5.25V,200200µA (Output Enabled)V STROBE=2.4VStrobe Input“0”Current V CC=5.25V,−1.6−1.6mA (Output Disabled)V STROBE=0.4VStrobe Input“0”Voltage V CC=4.75V0.80.8V Strobe Input“1”Voltage V CC=4.75V22V Output Short Circuit Current V CC=5.25V,V OUT=0V−18−55−18−55mAV+=10V,V−=−10V,V CC=5.25V,−55˚C≤T A≤125˚CSupply Current I+ 4.5mAV+=10V,V−=−10V,V CC=5.25V,0˚C≤T A≤70˚CSupply Current I+5mAV+=10V,V−=−10V,V CC=5.25V,−55˚C≤T A≤125˚CSupply Current I−10mA3Electrical Characteristics(Continued)(V +=+10V,V CC =+5V,V −=−10V,T MIN ≤T A ≤T MAX ,unless noted)LimitsParameterConditionsLM161/LM261LM361UnitsMinTypMaxMinTypMax V +=10V,V −=−10V,V CC =5.25V,0˚C ≤T A ≤70˚C Supply Current I−10mAV +=10V,V −=−10V,Supply Current I CC V CC =5.25V,18mA−55˚C ≤T A ≤125˚C V +=10V,V −=−10V,Supply Current I CC V CC =5.25V,20mA0˚C ≤T A ≤70˚CTransient ResponseV IN =50mV overdrive (Note 4)Propagation Delay Time (t pd(0))T A =25˚C 14201420ns Propagation Delay Time (t pd(1))T A =25˚C 14201420ns Delay Between Output A and B T A =25˚C 2525ns Strobe Delay Time (t pd(0))T A =25˚C 88ns Strobe Delay Time (t pd(1))T A =25˚C88nsNote 2:The device may be damaged by use beyond the maximum ratings.Note 3:Typical thermal impedances are as follows:Note 4:Measurements using AC Test circuit,Fanout =1.The devices are faster at low supply voltages.Note 5:Refer to RETS161X for LM161H and LM161J military specifications.Note 6:Human body model,1.5k Ωin series with 100pF.Typical Performance CharacteristicsDS005708-17Offset VoltageDS005708-8Input Currents vs Ambient TemperatureDS005708-9Input CharacteristicsDS005708-10 4Typical Performance Characteristics(Continued)Supply Current vs Ambient TemperatureDS005708-11Supply Current vs Supply VoltageDS005708-12Propagation Delay vs Ambient TemperatureDS005708-13Delay of Output 1With Respect to Output 2vs Ambient TemperatureDS005708-14Strobe Delay vs Ambient Temperature DS005708-15Common-Mode Pulse ResponseDS005708-16Propagation Delay vs Supply VoltageDS005708-75AC Test CircuitDS005708-6V IN=±50mV FANOUT=1FANOUT=4V+=+10V R=2.4k R=680ΩV−=−10V C=15pF C=30pFV CC=5.25V6Schematic DiagramLM161DS005708-1R10,R16:85R11,R17:2057Physical Dimensions inches(millimeters)unless otherwise notedMetal Can Package(H)Order Number LM161H/883,or LM361HNS Package Number H10CCeramic Dual-In-Line Package(J)Order Number LM161JNS Package Number J14A 8Physical Dimensions inches(millimeters)unless otherwise noted(Continued)Order Number LM361MNS Package Number M14AMolded Dual-In-Line Package(N)Order Number LM361NNS Package Number N14A9NotesLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION.As used herein:1.Life support devices or systems are devices or systems which,(a)are intended for surgical implant into the body,or (b)support or sustain life,and whose failure to perform when properly used in accordance with instructions for use provided in the labeling,can be reasonably expected to result in a significant injury to the user.2.A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system,or to affect its safety or effectiveness.National Semiconductor Corporation AmericasTel:1-800-272-9959Fax:1-800-737-7018Email:support@National Semiconductor EuropeFax:+49(0)180-5308586Email:europe.support@Deutsch Tel:+49(0)180-5308585English Tel:+49(0)180-5327832Français Tel:+49(0)180-5329358Italiano Tel:+49(0)180-5341680National Semiconductor Asia Pacific Customer Response Group Tel:65-2544466Fax:65-2504466Email:sea.support@National Semiconductor Japan Ltd.Tel:81-3-5639-7560Fax:81-3-5639-7507L M 161/L M 261/L M 361H i g h S p e e d D i f f e r e n t i a l C o m p a r a t o r sNational does not assume any responsibility for use of any circuitry described,no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.。