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SN74ALS638AN — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
Texas Instruments Inc

SN74ALS638AN

Bus Transceiver · PDIP-20 · Logic
Part Status: Obsolete In demand
Data last refreshed Jun 20, 2026
Manufacturer
Texas Instruments Inc
Mfr Part #
SN74ALS638AN
Series
SN74ALS638A
Category
Bus Transceiver
Datasheet
View datasheet ↗
Availability & Pricing
ZDI Price$11.18
Last transacted2006-10-04
Market range$11.18
Sourcing channels10
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Product Attributes

Electrical & Parametric
Supply Voltage4.5 V ~ 5.5 V
Logic FamilyALS
Physical & Thermal
Package / CasePDIP-20
Mounting TypeThrough Hole
SeriesSN74ALS638A
Operating Temperature0°C ~ 70°C
Classification & Lifecycle
CategoryBus Transceiver
TypeLogic
Part StatusObsolete

Octal inverting bus transceiver, open-collector outputs, ALS TTL

Availability & Sourcing

10 sources
SourceMfrQtyDate CodeConditionStatus
Market TI 597 — — Available RFQ
Market TI 53 16 — Available RFQ
Market Texas Instrumen 18 8909 — Available RFQ
Market Texas Instrumen 18 — — Available RFQ
Market TEXAS INS. 9 8710 — Available RFQ
Market TI 5 8710 — Available RFQ
Market TI 5000 23+ — Available RFQ
Market TI 842 — — Available RFQ
Market TI 18 198909 — Available RFQ
Market TI 53 2016 — Available RFQ

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

Price History & Market Reference

Market Price Range

High$11.18
Low$11.18
Last$11.18
Price as of2006-10-04

ZDI Transaction

Last ZDI price$11.18
As of2006-10-04
Active offers10

Pricing reflects ZDI's transaction and market-reference data. Firm pricing confirmed per RFQ against current availability.

Part Activity

recent searches, RFQs & offers
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Recent search and sourcing activity for SN74ALS638AN.

Engineering FAQ

SN74ALS638AN 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 SN74ALS638AN?
Supply Voltage: 4.5 V ~ 5.5 V; Logic Family: ALS.
What package is SN74ALS638AN supplied in?
SN74ALS638AN is supplied in the PDIP-20 package, through hole, rated 0°C ~ 70°C.
Can ZDI source SN74ALS638AN 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

SN74ALS638AN 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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