555 timer IC
E381582
The 555 timer IC is a widely used integrated circuit that provides precise timing, pulse generation, and oscillator functions in countless electronic circuits.
All labels observed (7)
| Label | Occurrences |
|---|---|
| 555 timer IC canonical | 3 |
| LM555 | 3 |
| 555 timer family of integrated circuits | 1 |
| LM555 timer (compatible / second-source versions) | 1 |
| LMC555 | 1 |
| Signetics 555 timer | 1 |
| TLC555 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3724786 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 555 timer IC Context triple: [Signetics, knownFor, 555 timer IC]
-
A.
µA741
µA741 is a classic general-purpose operational amplifier integrated circuit widely used in analog electronics for signal conditioning, filtering, and amplification.
-
B.
BJT
BJT is an abbreviation for Beijing Time, the standard time used throughout mainland China.
-
C.
Intel 8085
The Intel 8085 is an 8-bit microprocessor introduced by Intel in the mid-1970s, widely used in early personal computers, embedded systems, and educational platforms.
-
D.
Motorola 6800 microprocessor
The Motorola 6800 microprocessor is an 8-bit CPU introduced in the mid-1970s that became influential in early microcomputer and embedded system designs.
-
E.
Signetics
Signetics was an early integrated circuit and semiconductor manufacturer that became known for pioneering memory and logic chips before being acquired by Philips.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 555 timer IC Target entity description: The 555 timer IC is a widely used integrated circuit that provides precise timing, pulse generation, and oscillator functions in countless electronic circuits.
-
A.
µA741
µA741 is a classic general-purpose operational amplifier integrated circuit widely used in analog electronics for signal conditioning, filtering, and amplification.
-
B.
BJT
BJT is an abbreviation for Beijing Time, the standard time used throughout mainland China.
-
C.
Intel 8085
The Intel 8085 is an 8-bit microprocessor introduced by Intel in the mid-1970s, widely used in early personal computers, embedded systems, and educational platforms.
-
D.
Motorola 6800 microprocessor
The Motorola 6800 microprocessor is an 8-bit CPU introduced in the mid-1970s that became influential in early microcomputer and embedded system designs.
-
E.
Signetics
Signetics was an early integrated circuit and semiconductor manufacturer that became known for pioneering memory and logic chips before being acquired by Philips.
- F. None of above. chosen
Statements (61)
| Predicate | Object |
|---|---|
| instanceOf |
integrated circuit
ⓘ
monolithic timing circuit ⓘ timer IC ⓘ |
| canOperateAs |
PWM generator
ⓘ
RC oscillator ⓘ time delay generator ⓘ tone generator ⓘ |
| contains |
discharge transistor
ⓘ
flip-flop ⓘ two comparators ⓘ voltage divider ⓘ |
| designedBy | Hans R. Camenzind NERFINISHED ⓘ |
| developedFor | Signetics ⓘ |
| hasCMOSVariant |
7555
ⓘ
NE555 timer ⓘ
surface form:
LMC555
|
| hasDualVersion | 556 timer IC ⓘ |
| hasFunction |
astable multivibrator
ⓘ
bistable multivibrator ⓘ monostable multivibrator ⓘ oscillator ⓘ pulse generator ⓘ timer ⓘ |
| hasLowPowerVariant | 7555 ⓘ |
| hasPin |
CTRL
ⓘ
DISCH ⓘ GND ⓘ OUT ⓘ RESET ⓘ THR ⓘ TRIG ⓘ VCC ⓘ |
| hasQuadVersion | 558 timer IC ⓘ |
| introducedInYear | 1972 ⓘ |
| isManufacturedBy |
Nexperia
ⓘ
ON Semiconductor ⓘ STMicroelectronics ⓘ Texas Instruments ⓘ |
| isUsedIn |
LED flashers
ⓘ
oscillators ⓘ pulse-width modulation circuits ⓘ sequential timers ⓘ time delay circuits ⓘ timers ⓘ tone generators ⓘ |
| isWidelyUsedIn |
educational electronics projects
ⓘ
hobby electronics ⓘ |
| logicFamily | bipolar ⓘ |
| notablePartNumber |
555 timer IC
self-linksurface differs
ⓘ
surface form:
LM555
NE555 timer ⓘ
surface form:
NE555
SE555 ⓘ |
| outputCurrentCapability | up to about 200 mA ⓘ |
| outputStageType | bipolar transistor totem-pole ⓘ |
| packageType |
8-pin DIP
ⓘ
SOIC ⓘ TSSOP ⓘ |
| pinCount | 8 ⓘ |
| referenceThreshold | 2/3 VCC ⓘ |
| referenceTrigger | 1/3 VCC ⓘ |
| technologyNode | bipolar junction transistor ⓘ |
| typicalSupplyVoltageRange | 4.5 V to 16 V ⓘ |
| voltageDividerRatio | 1:3:2 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 555 timer IC Description of subject: The 555 timer IC is a widely used integrated circuit that provides precise timing, pulse generation, and oscillator functions in countless electronic circuits.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
LM555 timer (compatible / second-source versions)
this entity surface form:
LM555
this entity surface form:
LM555
this entity surface form:
TLC555
this entity surface form:
LMC555
this entity surface form:
LM555
this entity surface form:
555 timer family of integrated circuits
this entity surface form:
Signetics 555 timer