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SN54LS109AJ — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
Texas Instruments

SN54LS109AJ

JK Flip-Flop · 16-CDIP · Logic
Part Status: Obsolete
Data last refreshed Jun 20, 2026
Manufacturer
Texas Instruments
Mfr Part #
SN54LS109AJ
Series
54LS
Category
JK Flip-Flop
Datasheet
View datasheet ↗
Availability & Pricing
ZDI Price$3.97
Last transacted2007-04-23
Market range$3.97
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Product Attributes

Electrical & Parametric
Logic FamilyLS
Supply Voltage4.75 V ~ 5.25 V
Physical & Thermal
Package / Case16-CDIP
Mounting TypeThrough Hole
Series54LS
Operating Temperature-55°C ~ 125°C
Classification & Lifecycle
CategoryJK Flip-Flop
TypeLogic
Part StatusObsolete

Dual positive-edge-triggered J-K flip-flops with clear and preset

Environmental & Export Classifications

RoHS Status
Non-Compliant

Price History & Market Reference

Market Price Range

High$3.97
Low$3.97
Last$3.97
Price as of2007-04-23

ZDI Transaction

Last ZDI price$3.97
As of2007-04-23

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

Part Activity

recent searches, RFQs & offers
SN54LS109AJ viewed on the web · Web User
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SN54LS109AJ viewed on the web · Web User

Recent search and sourcing activity for SN54LS109AJ.

Engineering FAQ

SN54LS109AJ 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 SN54LS109AJ?
Logic Family: LS; Supply Voltage: 4.75 V ~ 5.25 V.
What package is SN54LS109AJ supplied in?
SN54LS109AJ is supplied in the 16-CDIP package, through hole, rated -55°C ~ 125°C.
Can ZDI source SN54LS109AJ 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

SN54LS109AJ 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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