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CAT28C256P-20 — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
Catalyst Semiconductor

CAT28C256P-20

EEPROM · PDIP-28 · Memory
Part Status: Obsolete
Data last refreshed Jul 28, 2026
Manufacturer
Catalyst Semiconductor
Mfr Part #
CAT28C256P-20
Series
CAT28C256
Category
EEPROM
Datasheet
View datasheet ↗
Availability & Pricing
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Product Attributes

Electrical & Parametric
Voltage4.5V ~ 5.5V
Access Time200 ns
Organization32K x 8
Physical & Thermal
Package / CasePDIP-28
Mounting TypeThrough Hole
SeriesCAT28C256
Operating Temperature0°C ~ 70°C
Classification & Lifecycle
CategoryEEPROM
TypeMemory
Part StatusObsolete

256 Kb (32K x 8) Parallel EEPROM, 200 ns, 5 V, PDIP-28

Part Activity

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CAT28C256P-20 viewed on the web · Web User
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Specifications reviewed & updated · ZDI

Recent search and sourcing activity for CAT28C256P-20.

Engineering FAQ

CAT28C256P-20 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 CAT28C256P-20?
Voltage: 4.5V ~ 5.5V; Access Time: 200 ns; Organization: 32K x 8.
What package is CAT28C256P-20 supplied in?
CAT28C256P-20 is supplied in the PDIP-28 package, through hole, rated 0°C ~ 70°C.
Can ZDI source CAT28C256P-20 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

CAT28C256P-20 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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