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HomeProductsIntegrated Circuits (ICs)Logic - ComparatorsSN74ALS521N
SN74ALS521N Image
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See specifications for product details.

SN74ALS521N - Texas Instruments

Manufacturer Part Number
SN74ALS521N
Manufacturer
Texas Instruments
Allelco Part Number
32D-SN74ALS521N
ECAD Model
Parts Description
IC COMPARATOR IDENTITY 8B 20DIP
Detailed Description
Package
20-DIP (0.300", 7.62mm)
Data sheet
SN54ALS520, SN74ALS518/520/521.pdf
RoHs Status
ROHS3 Compliant
In stock: 40787

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Quantity

Specifications

SN74ALS521N Tech Specifications
Texas Instruments - SN74ALS521N technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74ALS521N

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply 4.5V ~ 5.5V  
Type Identity Comparator  
Supplier Device Package 20-PDIP  
Series 74ALS  
Package / Case 20-DIP (0.300", 7.62mm)  
Package Tube  
Output Function A=B  
Product Attribute Attribute Value  
Output Active Low  
Operating Temperature 0°C ~ 70°C  
Number of Bits 8  
Mounting Type Through Hole  
Max Propagation Delay @ V, Max CL 20ns @ 5V, 50pF  
Current - Output High, Low 2.6mA, 24mA  
Base Product Number 74ALS521  

Parts Introduction

Manufacturer Part Number

SN74ALS521N

Manufacturer

Texas Instruments

Introduction

The SN74ALS521N is a high-performance 8-bit identity comparator from Texas Instruments designed for logic comparison applications.

Product Features and Performance

8-bit binary identity comparator

Active-low output

Compatible with 74ALS series logic family

Direct interface with TTL levels

Fast propagation delay of 20ns at 5V

Product Advantages

High-speed operation and quick decision-making capability

Energy-efficient with low output current requirements

TTL-compatible for easy integration

Robust through-hole package for secure mounting

Key Technical Parameters

Type: Identity Comparator

Number of Bits: 8

Output Function: A=B

Voltage - Supply: 4.5V to 5.5V

Current - Output High, Low: 2.6mA, 24mA

Max Propagation Delay @ V, Max CL: 20ns at 5V, 50pF

Operating Temperature Range: 0°C to 70°C

Quality and Safety Features

Meets or exceeds industry standards for quality and safety

Reliable performance within the operating temperature range

Compatibility

Interchangeable with other 74ALS series devices

Suitable for TTL logic level systems

Drop-in replacement for similar identity comparators

Application Areas

Digital systems

Microprocessor or Microcontroller based systems

Data processing

Telecommunication systems

Industrial electronics

Product Lifecycle

Active status, not nearing discontinuation

Replacements or upgrades typically available in Texas Instruments' 74ALS series

Several Key Reasons to Choose This Product

Provides precise and reliable logic level comparisons

Fast and consistent propagation delays enhance system speed

Low power consumption for energy-efficient designs

Compatible with a wide range of TTL logic circuits

Produced by Texas Instruments, a reputable manufacturer in the semiconductor industry

Broad application support, from consumer electronics to industrial controls

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74ALS521N

Product Attribute SN74ALS521N SN74ALS521NSR SN74ALS521DWR SN74ALS521DW
Part Number SN74ALS521N SN74ALS521NSR SN74ALS521DWR SN74ALS521DW
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Voltage - Supply 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V
Base Product Number 74ALS521 74ALS521 74ALS521 74ALS521
Series 74ALS 74ALS 74ALS 74ALS
Output Function A=B A=B A=B A=B
Output Active Low Active Low Active Low Active Low
Operating Temperature 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C
Supplier Device Package 20-PDIP 20-SO 20-SOIC 20-SOIC
Package Tube Tape & Reel (TR) Tape & Reel (TR) Tube
Number of Bits 8 8 8 8
Package / Case 20-DIP (0.300", 7.62mm) 20-SOIC (0.209', 5.30mm Width) 20-SOIC (0.295", 7.50mm Width) 20-SOIC (0.295", 7.50mm Width)
Current - Output High, Low 2.6mA, 24mA 2.6mA, 24mA 2.6mA, 24mA 2.6mA, 24mA
Type Identity Comparator Identity Comparator Identity Comparator Identity Comparator
Max Propagation Delay @ V, Max CL 20ns @ 5V, 50pF 20ns @ 5V, 50pF 20ns @ 5V, 50pF 20ns @ 5V, 50pF
Mounting Type Through Hole Surface Mount Surface Mount Surface Mount

SN74ALS521N Datasheet PDF

Download SN74ALS521N pdf datasheets and Texas Instruments documentation for SN74ALS521N - Texas Instruments.

PCN Design/Specification
Copper Bond Wire Revision A 04/Dec/2013.pdf Material Set 30/Mar/2017.pdf
HTML Datasheet
SN54ALS520, SN74ALS518/520/521.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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SN74ALS521N Image

SN74ALS521N

Texas Instruments
32D-SN74ALS521N

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