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HomeProductsIntegrated Circuits (ICs)Logic - ComparatorsSN74ALS521DWR
SN74ALS521DWR Image
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SN74ALS521DWR - Texas Instruments

Manufacturer Part Number
SN74ALS521DWR
Manufacturer
Texas Instruments
Allelco Part Number
32D-SN74ALS521DWR
ECAD Model
Parts Description
IC COMPARATOR IDENTITY 8B 20SOIC
Detailed Description
Package
20-SOIC (0.295", 7.50mm Width)
Data sheet
SN54ALS520, SN74ALS518/520/521.pdf
RoHs Status
ROHS3 Compliant
In stock: 42880

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Quantity

Specifications

SN74ALS521DWR Tech Specifications
Texas Instruments - SN74ALS521DWR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74ALS521DWR

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply 4.5V ~ 5.5V  
Type Identity Comparator  
Supplier Device Package 20-SOIC  
Series 74ALS  
Package / Case 20-SOIC (0.295", 7.50mm Width)  
Package Tape & Reel (TR)  
Output Function A=B  
Product Attribute Attribute Value  
Output Active Low  
Operating Temperature 0°C ~ 70°C  
Number of Bits 8  
Mounting Type Surface Mount  
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

SN74ALS521DWR

Manufacturer

Texas Instruments

Introduction

The SN74ALS521DWR is a high-performance logic comparator from Texas Instruments, designed to compare two 8-bit words and indicate whether they are equal.

Product Features and Performance

Operates as an identity comparator for 8-bit words

Offers active low output indicating when A=B

Features a maximum propagation delay of 20ns at 5V, 50pF, ensuring swift operations

Supports a voltage supply range of 4.5V to 5.5V, compatible with standard logic levels

Capable of driving outputs high and low with current levels of 2.6mA (high) and 24mA (low)

Integrated within a 20-SOIC package, optimized for surface mount applications

Product Advantages

Enhanced speed with low maximum propagation delay facilitates faster processing and response times

Flexibility in voltage supply ranges ensures compatibility with various circuits and systems

High drive current enhances signal integrity and reduces the risk of undetected logic levels

Compact 20-SOIC packaging allows for efficient use of board space

Key Technical Parameters

Type: Identity Comparator

Number of Bits: 8

Output: Active Low

Output Function: A=B

Voltage Supply: 4.5V ~ 5.5V

Current Output High, Low: 2.6mA, 24mA

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

Operating Temperature: 0°C ~ 70°C

Quality and Safety Features

Manufactured by Texas Instruments, a leader in semiconductor technology ensuring high-quality and reliable performance

Operates within the standard industrial temperature range, ensuring reliability in a broad range of environments

Compatibility

The device features standard logic level compatibility, making it suitable for interfacing with a wide range of digital circuits and systems

Application Areas

Widely used in digital comparison applications, including data processing systems, digital signal processing, and logic comparison circuits

Product Lifecycle

Currently marked as Active, indicating ongoing production and availability

Users should regularly monitor the Texas Instruments website for any updates regarding the product lifecycle, including notices of discontinuation or availability of replacements/upgrades

Several Key Reasons to Choose This Product

High-speed operation enhances system performance and responsiveness

Broad supply voltage range increases compatibility with various system designs

High output drive capability ensures clear and reliable signal transmission

Compact packaging enhances board efficiency and facilitates scaling down of designs

Backed by Texas Instruments' reputation for quality, ensuring reliability and performance

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74ALS521DWR

Product Attribute SN74ALS521DWR SN74ALS521N SN74ALS520N SN74ALS521DW
Part Number SN74ALS521DWR SN74ALS521N SN74ALS520N SN74ALS521DW
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Package / Case 20-SOIC (0.295", 7.50mm Width) 20-DIP (0.300", 7.62mm) 20-DIP (0.300", 7.62mm) 20-SOIC (0.295", 7.50mm Width)
Output Active Low Active Low Active Low Active Low
Series 74ALS 74ALS 74ALS 74ALS
Base Product Number 74ALS521 74ALS521 74ALS520 74ALS521
Current - Output High, Low 2.6mA, 24mA 2.6mA, 24mA 2.6mA, 24mA 2.6mA, 24mA
Operating Temperature 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C
Type Identity Comparator Identity Comparator Identity Comparator Identity Comparator
Supplier Device Package 20-SOIC 20-PDIP 20-PDIP 20-SOIC
Package Tape & Reel (TR) Tube Tube Tube
Number of Bits 8 8 8 8
Mounting Type Surface Mount Through Hole Through Hole Surface Mount
Output Function A=B A=B A=B A=B
Max Propagation Delay @ V, Max CL 20ns @ 5V, 50pF 20ns @ 5V, 50pF 20ns @ 5V, 50pF 20ns @ 5V, 50pF
Voltage - Supply 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V

SN74ALS521DWR Datasheet PDF

Download SN74ALS521DWR pdf datasheets and Texas Instruments documentation for SN74ALS521DWR - Texas Instruments.

PCN Design/Specification
Material Set 21/Jun/2016.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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SN74ALS521DWR Image

SN74ALS521DWR

Texas Instruments
32D-SN74ALS521DWR

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