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ST16C550IQ-48 — TQFP/LQFP-32/44 package (representative)
TQFP/LQFP-32/44
Representative of package type
Exar Corporation

ST16C550IQ-48

UART · TQFP-48 · Interface
Part Status: Obsolete In demand
Data last refreshed Jun 20, 2026
Manufacturer
Exar Corporation
Mfr Part #
ST16C550IQ-48
Series
ST16C550
Category
UART
Datasheet
View datasheet ↗
Availability & Pricing
Unit PriceRequest a Quote
Sourcing channels13
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Product Attributes

Electrical & Parametric
Supply Voltage2.97V ~ 5.5V
Fifo16-byte TX/RX
Max Baud1.5 Mbps
Physical & Thermal
Package / CaseTQFP-48
Mounting TypeSurface Mount
SeriesST16C550
Operating Temperature-40°C ~ 85°C
Classification & Lifecycle
CategoryUART
TypeInterface
Part StatusObsolete

2.97V-5.5V UART with 16-byte FIFO, 4 selectable baud rates up to 1.5 Mbps

Availability & Sourcing

13 sources
SourceMfrQtyDate CodeConditionStatus
Market EXAR 293 — — Available RFQ
Market EXAR 2228 — — Available RFQ
Market EXAR 1811 — — Available RFQ
Market EXAR 242 — — Available RFQ
Market EXAR 144 0341 — Available RFQ
Market Exar Corp 42 1152 — Available RFQ
Market EXAR 31 0412 — Available RFQ
Market EXAR 3 01 — Available RFQ
Market Exar 2173 — — Available RFQ
Market EXAR 884 0351+ — Available RFQ
Market EXAR 628 0351+ — Available RFQ
Market EXER 88 — — Available RFQ
Market Exar 42 201152 — Available RFQ

ZDI Stock — in our warehouse · Market — offers available through our sourcing network · Live — recent offers from our sourcing network.

Part Activity

recent searches, RFQs & offers
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User
ST16C550IQ-48 viewed on the web · Web User

Recent search and sourcing activity for ST16C550IQ-48.

Engineering FAQ

ST16C550IQ-48 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 ST16C550IQ-48?
Supply Voltage: 2.97V ~ 5.5V; Fifo: 16-byte TX/RX; Max Baud: 1.5 Mbps.
What package is ST16C550IQ-48 supplied in?
ST16C550IQ-48 is supplied in the TQFP-48 package, surface mount, rated -40°C ~ 85°C.
Can ZDI source ST16C550IQ-48 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

ST16C550IQ-48 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

from Exar Corporation

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