SN74LS166AN Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

Name: SN74LS166AN
Brand: Texas Instruments
SKU: SN74LS166AN
Availability: InStock

SN74LS166AN is an 8-bit parallel-in serial-out shift register from Texas Instruments, operating at up to 25 MHz with LS TTL logic. Features clock inhibit, 16-pin DIP package. From $0.66 in stock worldwide shipping.

ACTIVEIntegrated CircuitVerified May 2026

Package / Visual Reference

SN74LS166ANDual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Dual-In-Line Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: SN74LS166AN Datasheet PDF
Category: Integrated Circuit
Price: From $0.6605(MOQ 282)
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 SN74LS166AN?

8-bit parallel-in serial-out shift register with synchronous parallel load
Clock inhibit input for flexible data flow control
High-speed LS TTL logic operating at up to 25 MHz
16-pin DIP (R-PDIP-T16) package for easy through-hole PCB assembly
Low output current (I(ol) 8 mA) for reliable bus driving

What is SN74LS166AN used for?

The SN74LS166AN is widely used in serial data transmission systems where parallel data must be converted to a serial bitstream, such as microcontroller interfaces, display drivers, and communication buses. It is commonly employed in industrial control, test equipment, and embedded systems requiring data serialization. Its clock inhibit feature makes it especially useful in applications needing precise timing control over data shifting operations.

What are the specifications of SN74LS166AN?

YTEOL	15
Additional Feature	CLOCK INHIBIT
Count Direction	RIGHT
Family	LS
JESD-30 Code	R-PDIP-T16
JESD-609 Code	e4
Load Capacitance (CL)	15pF
Logic IC Type	PARALLEL IN SERIAL OUT
Max Frequency@Nom-Sup	25000000Hz
Max I(ol)	0.008A
Number of Bits	8
Number of Functions	1
Output Polarity	TRUE
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP16,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Packing Method	TUBE
Power Supply Current-Max (ICC)	32mA
Prop. Delay@Nom-Sup	25ns
Propagation Delay (tpd)	25ns
Qualification Status	Not Qualified
Schmitt Trigger	NO
Supply Voltage-Max (Vsup)	5.25V
Supply Voltage-Min (Vsup)	4.75V
Supply Voltage-Nom (Vsup)	5V
Surface Mount	NO
Technology	TTL
Temperature Grade	COMMERCIAL
Terminal Finish	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
Trigger Type	POSITIVE EDGE
fmax-Min	25MHz
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.90
Country of Origin	Malaysia, Mexico

Where can I find the SN74LS166AN datasheet?

SN74LS166AN Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for SN74LS166AN?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the maximum operating frequency of the SN74LS166AN?

The SN74LS166AN can operate at a maximum frequency of 25 MHz (25,000,000 Hz) at nominal supply voltage. This makes it suitable for high-speed serial data conversion applications in embedded systems and communication interfaces.

What package type does the SN74LS166AN come in?

The SN74LS166AN is available in a 16-pin Dual-In-Line Package (DIP), specifically the R-PDIP-T16 JESD-30 code. This through-hole package is ideal for prototyping, hobbyist projects, and industrial designs requiring robust PCB mounting.

What are typical applications for the SN74LS166AN shift register?

The SN74LS166AN is used in serial data transmission, microcontroller peripheral interfacing, display driving, industrial automation, and test equipment. Its parallel-in serial-out architecture efficiently converts 8-bit parallel data into serial streams for transmission or processing.

What is a suitable replacement or alternative for the SN74LS166AN?

Compatible alternatives to the SN74LS166AN include the SN74HC166 (CMOS version for lower power), SN74HCT166 (TTL-compatible CMOS), and the SN74ALS166 (advanced low-power Schottky). These alternatives maintain the same 8-bit parallel-in serial-out function with pin-compatible 16-pin DIP packages.

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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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AvailabilityIn Stock

Reference Price (USD)

From $0.6605

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
282+	$1.0700	$301.74
1000+	$0.7290	$729.00
2500+	$0.7020	$1755.00
5000+	$0.6860	$3430.00
100000+	$0.6605	$66050.00

pcs

Unit price: $1.0700 · Total: $301.74

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

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

SN74LS166AN Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of SN74LS166AN?

What is SN74LS166AN used for?

What are the specifications of SN74LS166AN?

Compliance & Regulatory

Where can I find the SN74LS166AN datasheet?

What are equivalent replacements for SN74LS166AN?

Frequently Asked Questions

What is the maximum operating frequency of the SN74LS166AN?

What package type does the SN74LS166AN come in?

What are typical applications for the SN74LS166AN shift register?

What is a suitable replacement or alternative for the SN74LS166AN?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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