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SN74ALS640B-1DW — SOIC-W (18–28) package (representative)
SOIC-W (18–28)
Representative of package type
Texas Instruments

SN74ALS640B-1DW

Bus Transceiver · SOIC-20 · Logic
In demand
Data last refreshed Jul 27, 2026
Manufacturer
Texas Instruments
Mfr Part #
SN74ALS640B-1DW
Series
74ALS640B
Category
Bus Transceiver
Datasheet
View datasheet ↗
Availability & Pricing
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Sourcing channels3
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Product Attributes

Electrical & Parametric
Logic FamilyALS
Voltage-Supply4.5V~5.5V
Physical & Thermal
Package / CaseSOIC-20
Mounting TypeSurface Mount
Series74ALS640B
Operating Temperature0°C ~ 70°C
Classification & Lifecycle
CategoryBus Transceiver
TypeLogic

Octal inverting bus transceiver, 3-state outputs, 4.5-5.5V

Availability & Sourcing

3 sources
SourceMfrQtyDate CodeConditionStatus
Market Texas Instrumen 52 — — Available RFQ
Market TI 5000 23+ — Available RFQ
Market TI 52 — — Available RFQ

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

Part Activity

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Specifications reviewed & updated · ZDI

Recent search and sourcing activity for SN74ALS640B-1DW.

Engineering FAQ

What are the key specifications of SN74ALS640B-1DW?
Logic Family: ALS; Voltage-Supply: 4.5V~5.5V.
What package is SN74ALS640B-1DW supplied in?
SN74ALS640B-1DW is supplied in the SOIC-20 package, surface mount, rated 0°C ~ 70°C.
Can ZDI source SN74ALS640B-1DW 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

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