SN74ALS273N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

The SN74ALS273N is an octal D-type positive-edge-triggered flip-flop with clear in TI's ALS logic family, housed in a 20-pin DIP package. It supports clock frequencies up to 35 MHz. From $1.60 in stock, worldwide shipping.

ACTIVEIntegrated CircuitVerified Jul 2026
Package / Visual Reference
SN74ALS273NDual-In-Line Packages
Quick Facts
Manufacturer
Texas Instruments
Package
Dual-In-Line Packages
Pin Count
20
Lifecycle
ACTIVE
Category
Integrated Circuit
Price
From $0.0900(MOQ 1)
Temp Range
?°C to 70.0°C
RoHS
Compliant
Lead Time
3–7 business days
Shipping
DHL Express · Worldwide

What are the key features of SN74ALS273N?

  • 8-bit octal D-type flip-flop array
  • Positive-edge-triggered clocking with common clear
  • 35 MHz maximum clock frequency
  • 24 mA maximum low-level output current (IOL)
  • 50 pF rated load capacitance
  • 20-pin dual-in-line (DIP) package, ALS logic family

What is SN74ALS273N used for?

The SN74ALS273N is used to latch and buffer 8-bit data words in bus-oriented digital systems, such as microprocessor address/data latching, register file storage, and pipeline stages in legacy and industrial control equipment. Its common clear input and ALS-family switching speed up to 35 MHz make it a common choice for retrofitting or maintaining older TTL-based board designs that need reliable 8-bit synchronous storage.

What are the specifications of SN74ALS273N?

Pbfree CodeYes
YTEOL15
FamilyALS
JESD-30 CodeR-PDIP-T20
JESD-609 Codee4
Load Capacitance (CL)50pF
Logic IC TypeD FLIP-FLOP
Max Frequency@Nom-Sup35000000Hz
Max I(ol)0.024A
Number of Bits8
Number of Functions8
Output PolarityTRUE
Package Body MaterialPLASTIC/EPOXY
Package Equivalence CodeDIP20,.3
Package ShapeRECTANGULAR
Package StyleIN-LINE
Packing MethodTUBE
Power Supply Current-Max (ICC)29mA
Prop. Delay@Nom-Sup15ns
Propagation Delay (tpd)15ns
Qualification StatusNot Qualified
Supply Voltage-Max (Vsup)5.5V
Supply Voltage-Min (Vsup)4.5V
Supply Voltage-Nom (Vsup)5V
Surface MountNO
TechnologyTTL
Temperature GradeCOMMERCIAL
Terminal FinishNickel/Palladium/Gold (Ni/Pd/Au)
Terminal FormTHROUGH-HOLE
Terminal Pitch2.54mm
Terminal PositionDUAL
Trigger TypePOSITIVE EDGE
fmax-Min70MHz
## SN74ALS273N Alternates Showing resultsImage
PackageDual-In-Line Packages

Compliance & Regulatory

RoHS StatusCompliant
Lead-FreeYes (Pb-Free)
ECCNEAR99
HTS Code8542.39.00.90
Country of OriginMalaysia

Where can I find the SN74ALS273N datasheet?

SN74ALS273N Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for SN74ALS273N?

Compatible alternatives and drop-in replacements for SN74ALS273N:

SN74ALS273DWTexas Instruments

D Flip-Flop, ALS Series, 8-Func, Positive Edge Triggered, 8-Bit, True Output, TTL, PDSO20

View Part →
SN74ALS273DWRTexas Instruments

D Flip-Flop, ALS Series, 8-Func, Positive Edge Triggered, 8-Bit, True Output, TTL, PDSO20

View Part →

Frequently Asked Questions

How fast can the SN74ALS273N be clocked while driving its outputs?

The SN74ALS273N supports clock frequencies up to 35 MHz and can sink up to 24 mA per output, giving designers enough speed and drive strength for 8-bit data latching in bus-oriented digital systems.

How many bits of data can a single SN74ALS273N register store, and what package houses it?

This device stores 8 bits of data across its octal D-type flip-flops and is supplied in a 20-pin dual-in-line package, which suits through-hole assembly on legacy or industrial control boards.

Why do industrial control retrofits still specify the SN74ALS273N instead of a modern CMOS latch?

Because the SN74ALS273N's ALS logic family offers a 35 MHz clock rate with 50 pF rated load capacitance and pin-compatible 20-pin DIP packaging, it directly replaces earlier TTL octal latches in maintenance and retrofit projects without requiring a board redesign.

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About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

AvailabilityIn Stock
Reference Price (USD)
From $0.0900
Buy from 1pc · Factory-direct pricing
Qty.Unit PriceExt. Price
1+$0.3000$0.30
43+$0.1350$5.81
371+$0.0900$33.39
pcs
Unit price: $0.3000 · Total: $0.30

In Stock · 24h Response · Worldwide Shipping

Lead Time3-7 business days
MOQFrom 1 piece
ShippingDHL / FedEx / UPS
OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.

MR
Marco Rossi
CTO, AutoDrive Systems, Italy