[{"data":1,"prerenderedAt":320},["ShallowReactive",2],{"component:l293d:en":3},{"component":4,"localizationFallbackIssues":256,"related":257,"equivalentSlugs":319},{"schemaVersion":5,"governance":6,"id":18,"mpn":19,"slug":18,"primaryCategory":20,"manufacturers":21,"lifecycleStatus":23,"shortDescription":24,"deepTechnicalOverview":25,"packages":26,"absoluteMaximums":101,"recommendedOperating":109,"parametricAttributes":111,"gotchas":198,"datasheetUrl":17,"documentationSources":217,"applicationCircuits":226,"equivalents":231,"mountedOnBoards":245,"seo":246},"1.0.0",{"publication":7,"verification":10,"provenance":15},{"status":8,"publishedDate":9},"published","2026-11-03",{"status":11,"verifiedDate":9,"verifiedBy":12,"checklist":13},"verified","Gemini (independent documentary review against Texas Instruments SLRS008D Rev. D; verified pinout, PDIP-16 NE package, absolute maximums, electrical parametric limits, gotchas, six-locale localization sidecars, and catalog release validation; owner publication GO, no physical bench signoff)",{"schema":14,"technicalFacts":14,"relationships":14,"sources":14},true,{"sourceUrls":16},[17],"https:\u002F\u002Fwww.ti.com\u002Flit\u002Fds\u002Fsymlink\u002Fl293d.pdf","l293d","L293D","timer_driver",[22],"Texas Instruments","active","Texas Instruments L293D quadruple high-current half-H driver in PDIP-16; 600 mA continuous output current per channel, 4.5 V to 36 V motor supply, and integrated inductive clamp diodes.","The L293D is an industry-standard monolithic integrated quadruple high-current half-H driver manufactured by Texas Instruments (datasheet SLRS008D, revised January 2016). Designed to provide bidirectional drive capability for inductive loads such as relays, solenoids, DC motors, and bipolar stepping motors, the L293D delivers up to 600 mA continuous output current (1.2 A non-repetitive peak for tp \u003C= 100 µs) per channel across an output supply voltage range from 4.5 V to 36 V (VCC2). Housed in a 16-pin plastic dual-in-line package (NE designation \u002F PDIP-16), the device features four independent push-pull totem-pole driver stages arranged as two pairs. Pair 1 (channels 1 and 2) is governed by common enable pin 1,2EN (pin 1), while pair 2 (channels 3 and 4) is governed by common enable pin 3,4EN (pin 9). All logic inputs (A and EN) are high-impedance TTL-compatible stages tolerant up to 7 V, with a high-level threshold VIH of 2.3 V and low-level threshold VIL of 1.5 V, operating from a separate logic supply VCC1 (4.5 V to 7 V, nominal 5 V). Unlike the basic L293, the L293D integrates internal high-speed output clamping diodes from each output terminal to VCC2 and GND, suppressing inductive flyback spikes without requiring external discrete diode bridges. The output stages employ a Darlington NPN pulldown transistor and pseudo-Darlington NPN pullup driver, exhibiting typical saturation voltage drops of 1.4 V (high side) and 1.2 V (low side) at rated current. Pins 4, 5, 12, and 13 are internally tied directly to the copper leadframe slug, serving as both electrical ground and the primary heatsinking path to PCB ground planes.",[27],{"packageType":28,"pinCount":29,"bodyDimensionsMm":30,"pitchMm":34,"thermalResistanceThetaJA":35,"thermalResistanceThetaJC":36,"pins":37},"PDIP-16",16,{"length":31,"width":32,"height":33},19.8,6.35,4.57,2.54,36.4,22.5,[38,44,48,54,59,61,65,69,74,78,82,86,88,90,94,98],{"pinNumber":39,"pinName":40,"electricalType":41,"isFiveVoltTolerant":14,"internalPull":42,"description":43},1,"1,2EN","input_only","none","Enable driver channels 1 and 2 (active high logic input, TTL compatible up to 7 V)",{"pinNumber":45,"pinName":46,"electricalType":41,"isFiveVoltTolerant":14,"internalPull":42,"description":47},2,"1A","Driver channel 1 non-inverting input (TTL compatible up to 7 V)",{"pinNumber":49,"pinName":50,"electricalType":51,"isFiveVoltTolerant":52,"internalPull":42,"description":53},3,"1Y","power_out",false,"Driver channel 1 output (totem-pole push-pull stage with Darlington sink and pseudo-Darlington source; internal inductive clamp diodes to VCC2 and GND)",{"pinNumber":55,"pinName":56,"electricalType":57,"isFiveVoltTolerant":52,"internalPull":42,"description":58},4,"GND","ground","Device ground and heatsink pin (internally tied to copper leadframe; connect to PCB ground plane with thermal vias)",{"pinNumber":60,"pinName":56,"electricalType":57,"isFiveVoltTolerant":52,"internalPull":42,"description":58},5,{"pinNumber":62,"pinName":63,"electricalType":51,"isFiveVoltTolerant":52,"internalPull":42,"description":64},6,"2Y","Driver channel 2 output (totem-pole push-pull stage with Darlington sink and pseudo-Darlington source; internal inductive clamp diodes to VCC2 and GND)",{"pinNumber":66,"pinName":67,"electricalType":41,"isFiveVoltTolerant":14,"internalPull":42,"description":68},7,"2A","Driver channel 2 non-inverting input (TTL compatible up to 7 V)",{"pinNumber":70,"pinName":71,"electricalType":72,"isFiveVoltTolerant":52,"internalPull":42,"description":73},8,"VCC2","power_in","Power supply voltage for half-H driver output stages (4.5 V to 36 V; requires low-ESR bulk and high-frequency bypass capacitance)",{"pinNumber":75,"pinName":76,"electricalType":41,"isFiveVoltTolerant":14,"internalPull":42,"description":77},9,"3,4EN","Enable driver channels 3 and 4 (active high logic input, TTL compatible up to 7 V)",{"pinNumber":79,"pinName":80,"electricalType":41,"isFiveVoltTolerant":14,"internalPull":42,"description":81},10,"3A","Driver channel 3 non-inverting input (TTL compatible up to 7 V)",{"pinNumber":83,"pinName":84,"electricalType":51,"isFiveVoltTolerant":52,"internalPull":42,"description":85},11,"3Y","Driver channel 3 output (totem-pole push-pull stage with Darlington sink and pseudo-Darlington source; internal inductive clamp diodes to VCC2 and GND)",{"pinNumber":87,"pinName":56,"electricalType":57,"isFiveVoltTolerant":52,"internalPull":42,"description":58},12,{"pinNumber":89,"pinName":56,"electricalType":57,"isFiveVoltTolerant":52,"internalPull":42,"description":58},13,{"pinNumber":91,"pinName":92,"electricalType":51,"isFiveVoltTolerant":52,"internalPull":42,"description":93},14,"4Y","Driver channel 4 output (totem-pole push-pull stage with Darlington sink and pseudo-Darlington source; internal inductive clamp diodes to VCC2 and GND)",{"pinNumber":95,"pinName":96,"electricalType":41,"isFiveVoltTolerant":14,"internalPull":42,"description":97},15,"4A","Driver channel 4 non-inverting input (TTL compatible up to 7 V)",{"pinNumber":29,"pinName":99,"electricalType":72,"isFiveVoltTolerant":52,"internalPull":42,"description":100},"VCC1","Logic supply voltage for internal control circuitry (4.5 V to 7 V, nominal 5 V; bypass with 0.1 µF ceramic capacitor to GND)",{"supplyVoltageMaxV":102,"inputVoltageMaxV":66,"outputCurrentMaxA":103,"powerDissipationMaxW":60,"operatingTempMinC":104,"operatingTempMaxC":105,"storageTempMinC":106,"storageTempMaxC":107,"esdHbmV":108},36,1.2,0,70,-65,150,2000,{"supplyVoltageMinV":110,"supplyVoltageTypV":60,"supplyVoltageMaxV":102,"ambientTempMinC":104,"ambientTempMaxC":105},4.5,[112,119,124,129,134,140,145,152,155,161,166,172,177,183,188,194],{"symbol":113,"name":114,"typicalValue":115,"minValue":116,"unit":117,"testCondition":118},"VOH","High-Level Output Voltage","VCC2 - 1.4","VCC2 - 1.8","V","IOH = -0.6 A, TA = 25°C",{"symbol":120,"name":121,"typicalValue":103,"maxValue":122,"unit":117,"testCondition":123},"VOL","Low-Level Output Voltage",1.8,"IOL = 0.6 A, TA = 25°C",{"symbol":125,"name":126,"typicalValue":127,"unit":117,"testCondition":128},"VOKH","High-Level Output Clamp Diode Voltage","VCC2 + 1.3","IOK = -0.6 A, TA = 25°C",{"symbol":130,"name":131,"typicalValue":132,"unit":117,"testCondition":133},"VOKL","Low-Level Output Clamp Diode Voltage",1.3,"IOK = 0.6 A, TA = 25°C",{"symbol":135,"name":136,"typicalValue":137,"minValue":138,"maxValue":66,"unit":117,"testCondition":139},"VIH","High-Level Input Voltage","—",2.3,"VCC1 \u003C= 7 V",{"symbol":141,"name":142,"typicalValue":137,"minValue":143,"maxValue":144,"unit":117,"testCondition":139},"VIL","Low-Level Input Voltage",-0.3,1.5,{"symbol":146,"name":147,"typicalValue":148,"maxValue":149,"unit":150,"testCondition":151},"IIH_A","High-Level Input Current (A Inputs)",0.2,100,"µA","VI = 7 V, TA = 25°C",{"symbol":153,"name":154,"typicalValue":148,"maxValue":79,"unit":150,"testCondition":151},"IIH_EN","High-Level Input Current (EN Inputs)",{"symbol":156,"name":157,"typicalValue":158,"maxValue":159,"unit":150,"testCondition":160},"IIL_A","Low-Level Input Current (A Inputs)",-3,-10,"VI = 0 V, TA = 25°C",{"symbol":162,"name":163,"typicalValue":164,"maxValue":165,"unit":150,"testCondition":160},"IIL_EN","Low-Level Input Current (EN Inputs)",-2,-100,{"symbol":167,"name":168,"typicalValue":169,"maxValue":169,"unit":170,"testCondition":171},"IO_cont","Continuous Output Current per Channel",600,"mA","Each channel, TA = 25°C",{"symbol":173,"name":174,"typicalValue":103,"maxValue":103,"unit":175,"testCondition":176},"IO_peak","Peak Output Current per Channel","A","tp \u003C= 100 µs, non-repetitive",{"symbol":178,"name":179,"typicalValue":180,"maxValue":181,"unit":170,"testCondition":182},"ICC1","Logic Supply Current (Outputs Low)",35,60,"IO = 0, all outputs low, TA = 25°C",{"symbol":184,"name":185,"typicalValue":91,"maxValue":186,"unit":170,"testCondition":187},"ICC2","Driver Supply Current (Outputs High)",24,"IO = 0, all outputs high, TA = 25°C",{"symbol":189,"name":190,"typicalValue":191,"unit":192,"testCondition":193},"tPLH","Low-to-High Propagation Delay",800,"ns","VCC1 = 5 V, VCC2 = 24 V, CL = 30 pF, TA = 25°C",{"symbol":195,"name":196,"typicalValue":197,"unit":192,"testCondition":193},"tPHL","High-to-Low Propagation Delay",400,[199,204,209,213],{"title":200,"severity":201,"description":202,"mitigationStrategy":203},"Large Darlington Output Saturation Drop (2.6V to 3.6V per Bridge) and Thermal Dissipation","critical","Each half-H output stage uses a pseudo-Darlington NPN pullup driver and a Darlington NPN pulldown sink. Because bipolar Darlington pairs cannot fully saturate below two diode drops, the output stage drops approximately 1.4V to 1.8V on the high side (VOH = VCC2 - 1.4V typ) and 1.2V to 1.8V on the low side (VOL = 1.2V typ). When driving a DC motor across a full H-bridge (two half-bridges), the cumulative voltage drop across both transistors is typically 2.6V to 3.6V. At 600mA load current, this voltage penalty dissipates 1.6W to 2.2W of heat directly inside the IC package, causing rapid thermal buildup and reduced effective motor terminal voltage.","Account for the 2.6V to 3.6V bridge saturation loss when choosing the motor supply rail VCC2 (e.g., supply 9V to deliver 6V nominal across the motor terminals). For high-efficiency or battery-powered designs requiring low voltage drop, use modern DMOS\u002FCMOS H-bridge drivers (such as DRV8833 or TB6612FNG) with low RDS(on).",{"title":205,"severity":206,"description":207,"mitigationStrategy":208},"Output Current Limit (600 mA Continuous vs L293 Non-D 1.0 A)","warning","The L293D integrates internal output clamp diodes for transient flyback suppression, but its continuous output current is strictly rated at 600 mA per channel (1.2 A peak for tp \u003C= 100 µs), whereas the diode-less L293 is rated at 1.0 A continuous (2.0 A peak). Attempting to operate inductive motors with stall currents exceeding 600 mA will trigger internal thermal protection, cause voltage sagging, or permanently damage the output bond wires.","Verify that the motor continuous running current remains below 500 mA and stall current does not exceed 1.2 A. If higher current is needed, select the diode-less L293 with external ultra-fast flyback diodes (e.g., 1N5819 Schottky), parallel adjacent half-H channels (1A+2A tied together, 1Y+2Y tied together), or step up to a dedicated higher-current driver IC.",{"title":210,"severity":206,"description":211,"mitigationStrategy":212},"Separation of Logic Supply (VCC1) from Motor Power Supply (VCC2)","VCC1 powers internal low-voltage TTL logic translation stages (4.5V to 7V, nominal 5V), while VCC2 supplies the high-current inductive motor outputs (4.5V to 36V). Connecting VCC1 directly to an unregulated motor power supply or omitting bypass capacitors allows heavy inductive commutation spikes and ground bounce from motor brush arcing to propagate into the logic rail, resetting microcontrollers or latching up the driver.","Power VCC1 from a regulated 5V rail decoupled with a 100 nF ceramic capacitor directly adjacent to pin 16. Power VCC2 from an independent motor power rail decoupled with a local 100 nF high-frequency ceramic capacitor and a 47 µF to 100 µF low-ESR electrolytic capacitor close to pin 8. Maintain a solid star ground connection at pins 4, 5, 12, and 13.",{"title":214,"severity":206,"description":215,"mitigationStrategy":216},"Thermal Ground Plane Heatsinking on Central Pins 4, 5, 12, and 13","Central pins 4, 5, 12, and 13 are internally connected directly to the copper leadframe of the PDIP-16 package to serve as the primary heatsinking path. In free air with no copper heatsinking, junction-to-ambient thermal resistance RthetaJA is relatively high, limiting continuous power dissipation to under 1.5W before reaching the 150°C junction limit. Leaving these pins floating or connected with thin signal traces prevents adequate heat transfer.","Solder all four ground pins (4, 5, 12, and 13) directly to an unfragmented PCB copper ground plane of at least 35 µm thickness with multiple solid thermal vias. Connecting these pins to a copper pour of 30 mm x 30 mm reduces RthetaJA towards 36.4°C\u002FW, allowing up to 3W continuous dissipation at 25°C ambient.",[218],{"title":219,"url":17,"type":220,"authority":221,"publisher":22,"documentNumber":222,"revision":223,"releaseDate":224,"language":225},"L293, L293D Quadruple High-Current Half-H Drivers","datasheet","primary","SLRS008D","Rev. D","2016-01","EN",[227],{"title":228,"schematicSlug":229,"topology":230},"L293D Dual H-Bridge DC Motor Driver","l293d-dual-h-bridge-dc-motor-driver","Quadruple half-H bipolar driver configured as two full H-bridges with internal clamp diodes for bidirectional DC motor and PWM speed control.",[232,236,240],{"equivalentMpn":233,"manufacturer":22,"compatibilityType":234,"parameterDifferences":235},"L293DNE","pin_to_pin_drop_in","Exact manufacturer orderable part number for L293D in PDIP-16 package with nickel-palladium-gold (NiPdAu) lead finish.",{"equivalentMpn":237,"manufacturer":22,"compatibilityType":238,"parameterDifferences":239},"SN754410NE","differing_electrical_limits","Higher continuous output current (1.0 A per channel vs 600 mA); pin-compatible PDIP-16 footprint; check revision for internal clamp diode presence.",{"equivalentMpn":241,"manufacturer":242,"compatibilityType":243,"parameterDifferences":244},"L293B","STMicroelectronics","functional_requires_bom_change","Higher continuous output current (1.0 A per channel); identical PDIP-16 pinout; requires external flyback clamp diodes.",[],{"canonicalUrl":247,"metaTitle":248,"metaDescription":249,"primarySearchCluster":250,"structuredDataSchema":255},"https:\u002F\u002Fcircuitbase.tech\u002Fcomponent\u002Fl293d","L293D Dual H-Bridge Motor Driver Pinout & Specs | CircuitBase","Texas Instruments L293D quadruple half-H driver specifications: 600mA per channel, 36V motor supply, integrated clamp diodes, PDIP-16 pinout, and thermal design.",[251,252,253,254],"l293d pinout","l293d datasheet","l293d motor driver","l293d h bridge","Product",null,[258,274,287,303],{"id":259,"slug":259,"mpn":260,"primaryCategory":20,"manufacturers":261,"shortDescription":264,"packages":265,"packageTypes":270,"voltage":271,"recommendedOperating":273},"ne555","NE555P",[22,242,262,263],"onsemi","Diodes Incorporated","Industry-standard precision bipolar timer IC for astable multivibrators, monostable pulse generation, and PWM controllers.",[266,268],{"packageType":267,"pinCount":70},"DIP-8",{"packageType":269,"pinCount":70},"SOIC-8",[267,269],{"context":272,"min":110,"max":29,"typical":60},"supply",{"supplyVoltageMinV":110,"supplyVoltageTypV":60,"supplyVoltageMaxV":29},{"id":275,"slug":275,"mpn":276,"primaryCategory":20,"manufacturers":277,"shortDescription":278,"packages":279,"packageTypes":283,"voltage":284,"recommendedOperating":286},"uln2003a","ULN2003A",[22],"Texas Instruments ULN2003A 7-channel Darlington transistor array in PDIP-16 and SOIC-16; 50 V collector breakdown, 500 mA continuous sink current per channel, and integrated inductive transient suppression clamp diodes.",[280,281],{"packageType":28,"pinCount":29},{"packageType":282,"pinCount":29},"SOIC-16",[28,282],{"context":272,"min":104,"max":285,"typical":186},50,{"supplyVoltageMinV":104,"supplyVoltageTypV":186,"supplyVoltageMaxV":285},{"id":288,"slug":288,"mpn":289,"primaryCategory":290,"manufacturers":291,"shortDescription":292,"packages":293,"packageTypes":298,"voltage":299,"recommendedOperating":302},"74auc1g14","SN74AUC1G14DBVR","logic_ic",[22],"Single inverting Schmitt-trigger gate in Texas Instruments Advanced Ultra-Low-Voltage CMOS (AUC) technology, operating from 0.8 V to 2.7 V with 3.6 V tolerant inputs and partial-power-down Ioff support.",[294,296],{"packageType":295,"pinCount":60},"SOT-23-5",{"packageType":297,"pinCount":60},"SC-70-5",[295,297],{"context":272,"min":300,"max":301,"typical":122},0.8,2.7,{"supplyVoltageMinV":300,"supplyVoltageTypV":122,"supplyVoltageMaxV":301},{"id":304,"slug":304,"mpn":305,"primaryCategory":306,"manufacturers":307,"shortDescription":308,"packages":309,"packageTypes":314,"voltage":315,"recommendedOperating":318},"lm2596","LM2596","voltage_regulator",[22],"Step-down switching voltage regulator capable of driving a 3A load with 150 kHz fixed frequency, 40V input range, internal thermal shutdown, and cycle-by-cycle current limiting in TO-220 and TO-263 packages.",[310,312],{"packageType":311,"pinCount":60},"TO-220-5",{"packageType":313,"pinCount":60},"TO-263-5",[311,313],{"context":316,"min":110,"max":317,"typical":87},"input",40,{"supplyVoltageMinV":110,"supplyVoltageTypV":87,"supplyVoltageMaxV":317},{"L293DNE":18},1793836422576]