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Exar

1A44-XR-XR68C681J

UART · PLCC-44 · Interface
Part Status: Obsolete
Data last refreshed Jul 31, 2026
Manufacturer
Exar
Mfr Part #
1A44-XR-XR68C681J
Series
XR68C681
Category
UART
Datasheet
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Availability & Pricing
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Product Attributes

Electrical & Parametric
Channels2
Fifo Depth8 bytes
Supply Voltage5 V
Physical & Thermal
Package / CasePLCC-44
Mounting TypeSurface Mount
SeriesXR68C681
Classification & Lifecycle
CategoryUART
TypeInterface
Part StatusObsolete

CMOS Dual UART (DUART) with 8-byte FIFO, 5 V operation

Part Activity

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1A44-XR-XR68C681J viewed on the web · Web User
1A44-XR-XR68C681J viewed on the web · Web User
1A44-XR-XR68C681J viewed on the web · Web User
1A44-XR-XR68C681J viewed on the web · Web User
1A44-XR-XR68C681J viewed on the web · Web User
1A44-XR-XR68C681J viewed on the web · Web User

Recent search and sourcing activity for 1A44-XR-XR68C681J.

Engineering FAQ

1A44-XR-XR68C681J 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 1A44-XR-XR68C681J?
Channels: 2; Fifo Depth: 8 bytes; Supply Voltage: 5 V.
What package is 1A44-XR-XR68C681J supplied in?
1A44-XR-XR68C681J is supplied in the PLCC-44 package, surface mount.
Can ZDI source 1A44-XR-XR68C681J 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

1A44-XR-XR68C681J 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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