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MM5740AAFN — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
National Semiconductor Corp

MM5740AAFN

Keyboard Encoder · DIP-40 · Interface
Part Status: Obsolete
Data last refreshed Jul 31, 2026
Manufacturer
National Semiconductor Corp
Mfr Part #
MM5740AAFN
Series
MM5740
Category
Keyboard Encoder
Datasheet
View datasheet ↗
Availability & Pricing
Unit PriceRequest a Quote
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Specifications

Physical & Thermal
Package / CaseDIP-40
Mounting TypeThrough Hole
SeriesMM5740
Classification & Lifecycle
CategoryKeyboard Encoder
TypeInterface
Part StatusObsolete

MOS keyboard encoder IC, 40-pin plastic DIP

Environmental & Export Classifications

RoHS Status
Non-Compliant

Part Activity

recent searches, RFQs & offers
MM5740AAFN viewed on the web · Web User
MM5740AAFN viewed on the web · Web User
MM5740AAFN viewed on the web · Web User
MM5740AAFN viewed on the web · Web User
Specifications reviewed & updated · ZDI

Recent search and sourcing activity for MM5740AAFN.

Engineering FAQ

MM5740AAFN is marked Obsolete — how does ZDI assure authenticity?
Obsolete and end-of-life parts carry elevated counterfeit risk, which is exactly why ZDI routes every lot through the full EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with source-country supplier vetting and full lot traceability before release.
What package is MM5740AAFN supplied in?
MM5740AAFN is supplied in the DIP-40 package, through hole.
Can ZDI source MM5740AAFN beyond the quantities shown?
Yes — ZD Integrated Circuits specializes in sourcing hard-to-find, obsolete, and excess electronic components through its global network, with counterfeit-avoidance inspection on every lot. Submit an RFQ with your target quantity for availability and pricing.

Documents & Media

Quality & Counterfeit Avoidance

ISO 9001 ERAI Member ESD Certified GIDEP Participant ZDI EQuality Process CAGE Code 1V8K2

ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.

Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.

✓Multi-stage EQuality Process™ inspection (QI-1 · QI-2/camera · QI-3)
✓Source-country supplier analysis, rating & review
✓Incoming inspection, RoHS verification, bake, full lot traceability
✓ESD-controlled handling · authentic parts guaranteed

MM5740AAFN is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.

Related Parts

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