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68B21 — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
Motorola

68B21

Peripheral Interface Adapter · DIP-40 · Interface
Part Status: Obsolete
Data last refreshed Jul 22, 2026
Manufacturer
Motorola
Mfr Part #
68B21
Series
MC6821
Category
Peripheral Interface Adapter
Datasheet
View datasheet ↗
Availability & Pricing
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Product Attributes

Electrical & Parametric
Clock Frequency2 MHz
Physical & Thermal
Package / CaseDIP-40
Mounting TypeThrough Hole
SeriesMC6821
Classification & Lifecycle
CategoryPeripheral Interface Adapter
TypeInterface
Part StatusObsolete

8-bit parallel I/O with handshake, 2 MHz version of MC6821 PIA

Part Activity

recent searches, RFQs & offers
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User
68B21 viewed on the web · Web User

Recent search and sourcing activity for 68B21.

Engineering FAQ

68B21 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 are the key specifications of 68B21?
Clock Frequency: 2 MHz.
What package is 68B21 supplied in?
68B21 is supplied in the DIP-40 package, through hole.
Can ZDI source 68B21 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

68B21 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.

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