National Semiconductor · Electronic Components
54FCT521LMQB
MICROCIRCUIT,DIGITAL — NSN 5962-01-281-0502
Part Number54FCT521LMQB
ManufacturerNational Semiconductor
AvailabilityAvailable to order — request a quote
Specifications
NSN5962-01-281-0502 (NSN)
Federal Item NameMICROCIRCUIT,DIGITAL
Federal Supply Class5962 — Microcircuits, Electronic
Operating Temp Range-55.0 TO 125.0 CELSIUS
Storage Temp Range-65.0 TO 155.0 CELSIUS
Voltage Rating7.0 VOLTS MAXIMUM POWER SOURCE
Output Logic FormCOMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC
Design Function1 COMPARATOR
Terminals20 LEADLESS
Enclosure ConfigurationLEADLESS FLAT PACK
Enclosure MaterialCERAMIC
Body Height0.059 INCHES MINIMUM AND 0.071 INCHES MAXIMUM
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 54FCT521LMQB available?
We can source 54FCT521LMQB even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 54FCT521LMQB by National Semiconductor obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 54FCT521LMQB 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 54FCT521LMQB?
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 54FCT521LMQB?
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.