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HomeProductsIntegrated Circuits (ICs)Logic - Gates and InvertersSN74LS21DR
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SN74LS21DR - Texas Instruments

Manufacturer Part Number
SN74LS21DR
Manufacturer
Texas Instruments
Allelco Part Number
32D-SN74LS21DR
ECAD Model
Parts Description
IC GATE AND 2CH 4-INP 14SOIC
Package
14-SOIC (0.154", 3.90mm Width)
Data sheet
SN54LS21, SN74LS21.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 146070

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Specifications

SN74LS21DR Tech Specifications
Texas Instruments - SN74LS21DR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74LS21DR

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply 4.75V ~ 5.25V  
Supplier Device Package 14-SOIC  
Series 74LS  
Package / Case 14-SOIC (0.154", 3.90mm Width)  
Package Tape & Reel (TR)  
Operating Temperature 0°C ~ 70°C  
Number of Inputs 4  
Number of Circuits 2  
Product Attribute Attribute Value  
Mounting Type Surface Mount  
Max Propagation Delay @ V, Max CL 20ns @ 5V, 15pF  
Logic Type AND Gate  
Input Logic Level - Low 0.8V  
Input Logic Level - High 2V  
Features -  
Current - Output High, Low 400µA, 8mA  
Base Product Number 74LS21  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

SN74LS21DR

Manufacturer

Texas Instruments

Introduction

The SN74LS21DR is a dual 4-input AND gate from Texas Instruments, designed for various logic combinations and controlled operations.

Product Features and Performance

Dual 4-input AND gate logic component

Surface mount technology, packaged in 14-SOIC

Offers a maximum propagation delay of 20ns at 5V and 15pF load

Input logic levels are set with low at 0.8V and high at 2V

Operating temperature range from 0°C to 70°C

Product Advantages

Compact surface mount package enhances board space efficiency

Consistent performance with a narrow supply voltage range (4.75V to 5.25V)

Suitable for high-speed logic applications due to low propagation delay

Key Technical Parameters

Output Current High, Low: 400µA, 8mA

Voltage Supply: 4.75V to 5.25V

Operating Temperature: 0°C to 70°C

Max Propagation Delay: 20ns at 5V voltage and 15pF capacitance load

Quality and Safety Features

Manufactured by a reputable leader in semiconductor solutions, ensuring high reliability and performance

Compatibility

Commonly compatible with other 14-SOIC logic devices and suitable for various digital logic circuits

Application Areas

Telecommunications

Consumer electronics

Computing devices

Industrial controls

Product Lifecycle

Currently active with continuous support from Texas Instruments

Availability of replacements or upgrades maintained

Several Key Reasons to Choose This Product

Reliable and accurate logical operations due to precise electrical parameters

Enhanced durability and operational stability within stipulated temperature and voltage ranges

Broad application scope due to generic logic functionality

Prolific manufacturer and continuous product availability assures long-term usability and support

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74LS21DR

Product Attribute SN74LS21DR SN74LS20DR SN74LS20D SN74LS20N
Part Number SN74LS21DR SN74LS20DR SN74LS20D SN74LS20N
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Base Product Number 74LS21 74LS20 74LS20 74LS20
Max Propagation Delay @ V, Max CL 20ns @ 5V, 15pF 15ns @ 5V, 15pF 15ns @ 5V, 15pF 15ns @ 5V, 15pF
Input Logic Level - Low 0.8V 0.8V 0.8V 0.8V
Operating Temperature 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C
Voltage - Supply 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V
Number of Circuits 2 2 2 2
Logic Type AND Gate NAND Gate NAND Gate NAND Gate
Package Tape & Reel (TR) Tape & Reel (TR) Tube Tube
Package / Case 14-SOIC (0.154", 3.90mm Width) 14-SOIC (0.154', 3.90mm Width) 14-SOIC (0.154", 3.90mm Width) 14-DIP (0.300", 7.62mm)
Current - Output High, Low 400µA, 8mA 400µA, 8mA 400µA, 8mA 400µA, 8mA
Mounting Type Surface Mount Surface Mount Surface Mount Through Hole
Number of Inputs 4 4 4 4
Supplier Device Package 14-SOIC 14-SOIC 14-SOIC 14-PDIP
Features - - - -
Input Logic Level - High 2V 2V 2V 2V
Series 74LS 74LS 74LS 74LS

SN74LS21DR Datasheet PDF

Download SN74LS21DR pdf datasheets and Texas Instruments documentation for SN74LS21DR - Texas Instruments.

HTML Datasheet
SN54LS21, SN74LS21.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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SN74LS21DR

Texas Instruments
32D-SN74LS21DR

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