SN74ALS191ADG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

Name: SN74ALS191ADG4
Brand: Texas Instruments
SKU: SN74ALS191ADG4
Availability: InStock

SN74ALS191ADG4 is a logic interface IC by Texas Instruments. Key specs: SOIC package, 16 pins, 70°C maximum. From inquiry pricing, in stock with worldwide shipping.

OBSOLETEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

SN74ALS191ADG4Small Outline Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Small Outline Packages
Pin Count: 16
Lifecycle: OBSOLETE
Datasheet: SN74ALS191ADG4 Datasheet PDF
Category: Integrated Circuit
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 SN74ALS191ADG4?

Texas Instruments logic interface IC selected for SOIC package requirements
Key SN74ALS191ADG4 configuration supports 16 pins matching and approved sourcing
70°C maximum detail helps buyers compare alternates and reduce procurement risk
Suitable for maintenance, prototype, and production builds that require exact manufacturer part-number traceability

What is SN74ALS191ADG4 used for?

SN74ALS191ADG4 is used in digital interface, buffering, glue-logic, and board-level control circuits. It is practical for maintenance and production sourcing when the design must preserve logic-family behavior, output structure, and exact orderable suffix compatibility.

What are the specifications of SN74ALS191ADG4?

YTEOL	0
Additional Feature	TCO OUTPUT
Count Direction	BIDIRECTIONAL
Family	ALS
JESD-30 Code	R-PDSO-G16
JESD-609 Code	e4
Load Capacitance (CL)	50pF
Load/Preset Input	YES
Logic IC Type	BINARY COUNTER
Max Frequency@Nom-Sup	30000000Hz
Max I(ol)	0.008A
Mode of Operation	SYNCHRONOUS
Number of Bits	4
Number of Functions	1
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP16,.25
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Packing Method	TUBE
Peak Reflow Temperature (Cel)	260
Power Supply Current-Max (ICC)	22mA
Prop. Delay@Nom-Sup	31ns
Propagation Delay (tpd)	18ns
Qualification Status	Not Qualified
Supply Voltage-Max (Vsup)	5.5V
Supply Voltage-Min (Vsup)	4.5V
Supply Voltage-Nom (Vsup)	5V
Surface Mount	YES
Technology	TTL
Temperature Grade	COMMERCIAL
Terminal Finish	NICKEL PALLADIUM GOLD
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	30
Trigger Type	POSITIVE EDGE
fmax-Min	30MHz
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
HTS Code	8542.39.00.60
Country of Origin	Mexico

Where can I find the SN74ALS191ADG4 datasheet?

SN74ALS191ADG4 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for SN74ALS191ADG4?

Compatible alternatives and drop-in replacements for SN74ALS191ADG4:

SN74ALS191ADTexas Instruments

Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16

View Part →

SN74ALS561ADWRG4Texas Instruments

Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, PDSO20

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

Which designs are a good fit for SN74ALS191ADG4?

SN74ALS191ADG4 fits designs that need a logic interface IC with 16 pins. Buyers should compare the manufacturer part number, electrical role, and lifecycle before approving production use.

How should buyers validate SN74ALS191ADG4 before a production order?

For package or assembly planning, verify 70°C maximum against the existing footprint, sourcing suffix, and approved vendor list. That keeps purchasing aligned with engineering requirements.

When is SN74ALS191ADG4 suitable as a replacement candidate?

Use SN74ALS191ADG4 as a replacement candidate only after confirming datasheet limits, compliance, and application fit, including 74A. This reduces requalification risk.

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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.

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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.”

Marco Rossi

CTO, AutoDrive Systems, Italy

SN74ALS191ADG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

What are the key features of SN74ALS191ADG4?

What is SN74ALS191ADG4 used for?

What are the specifications of SN74ALS191ADG4?

Compliance & Regulatory

Where can I find the SN74ALS191ADG4 datasheet?

What are equivalent replacements for SN74ALS191ADG4?

Frequently Asked Questions

Which designs are a good fit for SN74ALS191ADG4?

How should buyers validate SN74ALS191ADG4 before a production order?

When is SN74ALS191ADG4 suitable as a replacement candidate?

Related Guides

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing

STEF05SGR 5 V eFuse Protection Design Guide

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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