[{"data":1,"prerenderedAt":197},["ShallowReactive",2],{"component:ne555:en":3},{"component":4,"localizationFallbackIssues":178,"related":179,"equivalentSlugs":196},{"schemaVersion":5,"governance":6,"id":18,"mpn":19,"slug":18,"primaryCategory":20,"manufacturers":21,"lifecycleStatus":26,"shortDescription":27,"deepTechnicalOverview":28,"packages":29,"absoluteMaximums":95,"recommendedOperating":100,"parametricAttributes":103,"gotchas":131,"datasheetUrl":17,"documentationSources":147,"applicationCircuits":153,"equivalents":154,"mountedOnBoards":167,"seo":168},"1.0.0",{"publication":7,"verification":10,"provenance":15},{"status":8,"publishedDate":9},"published","2026-10-10",{"status":11,"verifiedDate":9,"verifiedBy":12,"checklist":13},"verified","Serhii Shvab (owner sign-off of review pack batch 1, prepared by Claude against the cited datasheets)",{"schema":14,"technicalFacts":14,"relationships":14,"sources":14},true,{"sourceUrls":16},[17],"https:\u002F\u002Fwww.ti.com\u002Flit\u002Fds\u002Fsymlink\u002Fne555.pdf","ne555","NE555P","timer_driver",[22,23,24,25],"Texas Instruments","STMicroelectronics","onsemi","Diodes Incorporated","active","Industry-standard precision bipolar timer IC for astable multivibrators, monostable pulse generation, and PWM controllers.","The NE555 is a precision timing circuit capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and free-running duty cycle are controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The figures on this page come from the Texas Instruments NE555 datasheet (SLFS022K); NE555 parts from other manufacturers are pin-compatible but their limits can differ slightly, so check the datasheet of the part you use.",[30,78],{"packageType":31,"pinCount":32,"bodyDimensionsMm":33,"pitchMm":37,"thermalResistanceThetaJA":38,"pins":39},"DIP-8",8,{"length":34,"width":35,"height":36},9.81,6.35,4.57,2.54,98.5,[40,46,51,56,60,65,69,74],{"pinNumber":41,"pinName":42,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":45},1,"GND","ground","none","Ground reference (0V)",{"pinNumber":47,"pinName":48,"electricalType":49,"isFiveVoltTolerant":14,"internalPull":44,"description":50},2,"TRIG","input_only","Trigger input (active low, triggers output high when input drops below 1\u002F3 VCC)",{"pinNumber":52,"pinName":53,"electricalType":54,"isFiveVoltTolerant":14,"internalPull":44,"description":55},3,"OUT","power_out","Output driver terminal (totem-pole stage sourcing or sinking up to 200mA)",{"pinNumber":57,"pinName":58,"electricalType":49,"isFiveVoltTolerant":14,"internalPull":44,"description":59},4,"RESET","Active-low reset: forces the output and discharge low. Guaranteed reset below 0.3 V and released above 1 V (0.7 V typical); tie to VCC if unused.",{"pinNumber":61,"pinName":62,"electricalType":63,"isFiveVoltTolerant":14,"internalPull":44,"description":64},5,"CONT","analog_in","Control voltage terminal (accesses internal 2\u002F3 VCC divider; bypass with 10nF to ground)",{"pinNumber":66,"pinName":67,"electricalType":63,"isFiveVoltTolerant":14,"internalPull":44,"description":68},6,"THRES","Threshold input (resets flip-flop and pulls output low when voltage exceeds 2\u002F3 VCC)",{"pinNumber":70,"pinName":71,"electricalType":72,"isFiveVoltTolerant":14,"internalPull":44,"description":73},7,"DISCH","open_drain","Discharge open-collector NPN terminal (switches to GND in phase with output low to discharge timing cap)",{"pinNumber":32,"pinName":75,"electricalType":76,"isFiveVoltTolerant":14,"internalPull":44,"description":77},"VCC","power_in","Positive power supply terminal (+4.5V to +16V recommended, 18V absolute max)",{"packageType":79,"pinCount":32,"bodyDimensionsMm":80,"pitchMm":84,"thermalResistanceThetaJA":85,"pins":86},"SOIC-8",{"length":81,"width":82,"height":83},4.9,3.91,1.75,1.27,125.4,[87,88,89,90,91,92,93,94],{"pinNumber":41,"pinName":42,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":45},{"pinNumber":47,"pinName":48,"electricalType":49,"isFiveVoltTolerant":14,"internalPull":44,"description":50},{"pinNumber":52,"pinName":53,"electricalType":54,"isFiveVoltTolerant":14,"internalPull":44,"description":55},{"pinNumber":57,"pinName":58,"electricalType":49,"isFiveVoltTolerant":14,"internalPull":44,"description":59},{"pinNumber":61,"pinName":62,"electricalType":63,"isFiveVoltTolerant":14,"internalPull":44,"description":64},{"pinNumber":66,"pinName":67,"electricalType":63,"isFiveVoltTolerant":14,"internalPull":44,"description":68},{"pinNumber":70,"pinName":71,"electricalType":72,"isFiveVoltTolerant":14,"internalPull":44,"description":73},{"pinNumber":32,"pinName":75,"electricalType":76,"isFiveVoltTolerant":14,"internalPull":44,"description":77},{"supplyVoltageMaxV":96,"outputCurrentMaxA":97,"operatingTempMinC":98,"operatingTempMaxC":99},18,0.225,0,70,{"supplyVoltageMinV":101,"supplyVoltageTypV":61,"supplyVoltageMaxV":102,"ambientTempMinC":98,"ambientTempMaxC":99},4.5,16,[104,107,112,116,122,127],{"symbol":75,"name":105,"typicalValue":61,"minValue":101,"maxValue":102,"unit":106},"Supply Voltage Range","V",{"symbol":108,"name":109,"typicalValue":52,"maxValue":66,"unit":110,"testCondition":111},"ICC","Supply Current (Low Output)","mA","VCC = 5V, RL = infinity",{"symbol":113,"name":114,"typicalValue":115,"unit":110},"IOUT","Output Current Drive Capability",200,{"symbol":117,"name":118,"typicalValue":119,"unit":120,"testCondition":121},"fMAX","Recommended Maximum Frequency",100,"kHz","TI: use at 100 kHz or below to reduce distortion",{"symbol":123,"name":124,"typicalValue":125,"unit":126},"VTH","Threshold Voltage Ratio","2\u002F3 VCC","ratio",{"symbol":128,"name":129,"typicalValue":130,"unit":126},"VTR","Trigger Voltage Ratio","1\u002F3 VCC",[132,137,142],{"title":133,"severity":134,"description":135,"mitigationStrategy":136},"Supply Spikes at Output Transitions","critical","The bipolar output stage draws short current spikes from VCC every time the output switches. Without local decoupling these spikes disturb the supply rail, which can reset nearby microcontrollers or add jitter to the timing.","Place a 100 nF ceramic capacitor in parallel with a 10 µF – 100 µF electrolytic directly across pin 8 (VCC) and pin 1 (GND), with short traces.",{"title":138,"severity":139,"description":140,"mitigationStrategy":141},"Floating RESET Pin","warning","Pin 4 (RESET) resets the timer below 0.3 V (guaranteed) and releases above 1 V (0.7 V typical). Left floating, it can pick up noise and halt the oscillator intermittently.","Tie pin 4 to VCC unless an external reset is needed.",{"title":143,"severity":144,"description":145,"mitigationStrategy":146},"Control Voltage Pin 5 Noise Pickup","info","Pin 5 connects directly to the internal 2\u002F3 VCC divider network. High-frequency noise on VCC coupled into Pin 5 modulates the comparator trip thresholds, causing pulse-width jitter.","Connect a 10nF (0.01uF) ceramic capacitor from Pin 5 to ground close to the IC.",[148],{"title":149,"url":17,"type":150,"authority":151,"publisher":22,"language":152},"NE555 Precision Timers Datasheet","datasheet","primary","EN",[],[155,159,162],{"equivalentMpn":156,"manufacturer":22,"compatibilityType":157,"parameterDifferences":158},"TLC555","pin_to_pin_drop_in","CMOS version (per the TI TLC555 datasheet): 2 V minimum supply, much lower supply current, rail-to-rail output and operation up to 2.1 MHz; check output-current limits before swapping.",{"equivalentMpn":160,"manufacturer":22,"compatibilityType":157,"parameterDifferences":161},"LM555","Pin-compatible bipolar 555 timer; check its own datasheet for exact limits.",{"equivalentMpn":163,"manufacturer":164,"compatibilityType":165,"parameterDifferences":166},"NE556","Various","functional_requires_bom_change","Dual 555 timer in 14-pin DIP\u002FSOIC package requiring different PCB footprint.",[],{"canonicalUrl":169,"metaTitle":170,"metaDescription":171,"primarySearchCluster":172,"structuredDataSchema":177},"https:\u002F\u002Fcircuitbase.tech\u002Fcomponent\u002Fne555","NE555 Timer IC Pinout, Datasheet & Reference Circuits | CircuitBase","NE555 timer pinout for PDIP-8 and SOIC-8, supply and output limits, RESET levels, 100 kHz guidance, decoupling and reference circuits, from the TI datasheet.",[173,174,175,176],"ne555 pinout","ne555 timer datasheet","ne555 astable circuit","ne555 pwm schematic","Product",null,[180],{"id":181,"slug":181,"mpn":182,"primaryCategory":183,"manufacturers":184,"shortDescription":186,"packages":187,"packageTypes":190,"voltage":191,"recommendedOperating":195},"ams1117-3-3","AMS1117-3.3","voltage_regulator",[185,164],"Advanced Monolithic Systems","1A low-dropout positive linear voltage regulator with fixed 3.3V output in SOT-223 package.",[188],{"packageType":189,"pinCount":57},"SOT-223",[189],{"context":192,"min":193,"max":-1,"typical":61,"outputTypical":194},"input",4.75,3.3,{"supplyVoltageMinV":193,"supplyVoltageTypV":61,"supplyVoltageMaxV":-1},{},1791718236079]