National Semiconductor · Electronic Components
LM555CN
INTERGRATED CIRCUIT TIMER
Part NumberLM555CN
ManufacturerNational Semiconductor
AvailabilityIn stock — ships fast
Specifications
NSN5962-00-277-0391 (NSN)
Federal Item NameMICROCIRCUIT,LINEAR
Operating Temp Range+0.0 TO 70.0 CELSIUS
Storage Temp Range-65.0 TO 150.0 CELSIUS
Max Power Dissipation600.0 MILLIWATTS
Design Function1 TIMER, DELAY
Enclosure ConfigurationDUAL-IN-LINE
Enclosure MaterialPLASTIC
Terminal Surface TreatmentSOLDER
Features ProvidedADJUSTABLE AND EXTERNALLY COMPENSATED AND MONOLITHIC AND POSITIVE OUTPUTS AND RESETTABLE
Body Width0.245 INCHES MINIMUM AND 0.252 INCHES MAXIMUM
Input Circuit Pattern4 INPUT
Federal Supply Class5962 — Microcircuits, Electronic
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is LM555CN in stock?
Yes — LM555CN is in our stock database. Request a quote for current pricing and lead time.
Is LM555CN by National Semiconductor obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If LM555CN has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like LM555CN?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for LM555CN?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.