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- Latch-up abstract "A latch-up is a type of short circuit which can occur in an integrated circuit (IC). More specifically it is the inadvertent creation of a low-impedance path between the power supply rails of a MOSFET circuit, triggering a parasitic structure which disrupts proper functioning of the part, possibly even leading to its destruction due to overcurrent. A power cycle is required to correct this situation.A single event latch-up is a latch-up caused by a single event upset, typically heavy ions or protons from cosmic rays or solar flares.The parasitic structure is usually equivalent to a thyristor (or SCR), a PNPN structure which acts as a PNP and an NPN transistor stacked next to each other. During a latch-up when one of the transistors is conducting, the other one begins conducting too. They both keep each other in saturation for as long as the structure is forward-biased and some current flows through it - which usually means until a power-down. The SCR parasitic structure is formed as a part of the totem-pole PMOS and NMOS transistor pair on the output drivers of the gates.The latch-up does not have to happen between the power rails - it can happen at any place where the required parasitic structure exists. A common cause of latch-up is a positive or negative voltage spike on an input or output pin of a digital chip that exceeds the rail voltage by more than a diode drop. Another cause is the supply voltage exceeding the absolute maximum rating, often from a transient spike in the power supply. It leads to a breakdown of an internal junction. This frequently happens in circuits which use multiple supply voltages that do not come up in the required sequence on power-up, leading to voltages on data lines exceeding the input rating of parts that have not yet reached a nominal supply voltage. Latch-ups can also be caused by an electrostatic discharge event. Another common cause of latch-ups is ionizing radiation which makes this a significant issue in electronic products designed for space (or very high-altitude) applications.High-power microwave interference can also trigger latch-ups.Both CMOS integrated circuits and TTL integrated circuits are more susceptible to latch-up at higher temperatures.".
- Latch-up thumbnail Latchup.png?width=300.
- Latch-up wikiPageExternalLink index.html.
- Latch-up wikiPageExternalLink latch-up.html.
- Latch-up wikiPageExternalLink eevblog-16-all-about-cmos-scr-latchup.
- Latch-up wikiPageExternalLink latchup-protection.
- Latch-up wikiPageID "2081342".
- Latch-up wikiPageLength "8057".
- Latch-up wikiPageOutDegree "27".
- Latch-up wikiPageRevisionID "703745936".
- Latch-up wikiPageWikiLink Avalanche_diode.
- Latch-up wikiPageWikiLink Bipolar_junction_transistor.
- Latch-up wikiPageWikiLink Category:Integrated_circuits.
- Latch-up wikiPageWikiLink Category:Semiconductor_device_defects.
- Latch-up wikiPageWikiLink Electrical_impedance.
- Latch-up wikiPageWikiLink Electronic_Industries_Alliance.
- Latch-up wikiPageWikiLink Electrostatic_discharge.
- Latch-up wikiPageWikiLink Hot_swapping.
- Latch-up wikiPageWikiLink Integrated_circuit.
- Latch-up wikiPageWikiLink Ionizing_radiation.
- Latch-up wikiPageWikiLink JEDEC.
- Latch-up wikiPageWikiLink MOSFET.
- Latch-up wikiPageWikiLink Parasitic_structure.
- Latch-up wikiPageWikiLink Power_cycling.
- Latch-up wikiPageWikiLink P–n_junction.
- Latch-up wikiPageWikiLink Short_circuit.
- Latch-up wikiPageWikiLink Silicon_controlled_rectifier.
- Latch-up wikiPageWikiLink Silicon_on_insulator.
- Latch-up wikiPageWikiLink Single_event_upset.
- Latch-up wikiPageWikiLink Thyristor.
- Latch-up wikiPageWikiLink Transient_(oscillation).
- Latch-up wikiPageWikiLink Voltage_spike.
- Latch-up wikiPageWikiLink Wikt:qualification.
- Latch-up wikiPageWikiLink File:Latchup.png.
- Latch-up wikiPageWikiLink File:Latchup_ckt.png.
- Latch-up wikiPageWikiLinkText "Latch-up".
- Latch-up wikiPageWikiLinkText "latch-up".
- Latch-up wikiPageUsesTemplate Template:Citation_needed.
- Latch-up wikiPageUsesTemplate Template:Clarify.
- Latch-up wikiPageUsesTemplate Template:Reflist.
- Latch-up subject Category:Integrated_circuits.
- Latch-up subject Category:Semiconductor_device_defects.
- Latch-up hypernym Circuit.
- Latch-up type BaseballLeague.
- Latch-up type Circuit.
- Latch-up type Defect.
- Latch-up type Semiconductor.
- Latch-up comment "A latch-up is a type of short circuit which can occur in an integrated circuit (IC). More specifically it is the inadvertent creation of a low-impedance path between the power supply rails of a MOSFET circuit, triggering a parasitic structure which disrupts proper functioning of the part, possibly even leading to its destruction due to overcurrent.".
- Latch-up label "Latch-up".
- Latch-up sameAs Q491282.
- Latch-up sameAs Latch-Up-Effekt.
- Latch-up sameAs Latch-up.
- Latch-up sameAs m.06kwh1.
- Latch-up sameAs Mikroprieraz.
- Latch-up sameAs Q491282.
- Latch-up wasDerivedFrom Latch-up?oldid=703745936.
- Latch-up depiction Latchup.png.
- Latch-up isPrimaryTopicOf Latch-up.