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HomeProductsIntegrated Circuits (ICs)Logic - Buffers, Drivers, Receivers, TransceiversSN74LS642NS
Texas Instruments
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SN74LS642NS - Texas Instruments

Manufacturer Part Number
SN74LS642NS
Manufacturer
Texas Instruments
Allelco Part Number
32D-SN74LS642NS
ECAD Model
Parts Description
PROTOTYPE
Package
20-SOIC (0.209", 5.30mm Width)
Data sheet
SN74LS642NS.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 14170

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Specifications

SN74LS642NS Tech Specifications
Texas Instruments - SN74LS642NS technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74LS642NS

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply 4.75V ~ 5.25V  
Supplier Device Package 20-SO  
Series 74LS  
Package / Case 20-SOIC (0.209", 5.30mm Width)  
Package Tube  
Output Type Open Collector  
Product Attribute Attribute Value  
Operating Temperature 0°C ~ 70°C (TA)  
Number of Elements 1  
Number of Bits per Element 8  
Mounting Type Surface Mount  
Logic Type Transceiver, Inverting  
Input Type -  
Current - Output High, Low 100µA, 24mA  

Environmental & Export Classifications

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

Parts Introduction

Manufacturer Part Number

SN74LS642NS

Manufacturer

Texas Instruments

Introduction

The SN74LS642NS is an 8-bit, inverting, open-collector transceiver with three-state outputs. It features high-current drive capability, making it suitable for bus-oriented applications such as memory address drivers, peripheral drivers, and bus transceivers.

Product Features and Performance

8-bit transceiver design

Inverting logic

Open-collector outputs

High-current drive capability (100 μA output high, 24 mA output low)

Operates on a 4.75 V to 5.25 V power supply

Supports 0°C to 70°C operating temperature range

Surface mount 20-SOIC package

Product Advantages

Enables high-speed, high-current bus-oriented applications

Versatile design supports a wide range of system architectures

Efficient power consumption and thermal management

Key Reasons to Choose This Product

Robust performance and reliability for critical system components

Cost-effective solution for high-speed, high-current bus interfacing

Seamless integration with Texas Instruments' extensive portfolio of logic and interface devices

Quality and Safety Features

Designed and manufactured to Texas Instruments' high-quality standards

Undergoes rigorous testing and screening to ensure reliable operation

Compatibility

Compatible with a variety of digital logic families, including TTL and CMOS

Suitable for use in a wide range of electronic systems and applications

Application Areas

Memory address drivers

Peripheral drivers

Bus transceivers

General-purpose bus-oriented applications

Product Lifecycle

The SN74LS642NS is in the Last Time Buy phase, indicating it is nearing discontinuation.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74LS642NS

Product Attribute SN74LS642NS SN74LS641N SN74LS645N SN74LS642-1N
Part Number SN74LS642NS SN74LS641N SN74LS645N SN74LS642-1N
Manufacturer Texas Instruments onsemi Texas Instruments Texas Instruments
Series 74LS 74LS 74LS 74LS
Voltage - Supply 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V
Input Type - - - -
Logic Type Transceiver, Inverting Transceiver, Non-Inverting Transceiver, Non-Inverting Transceiver, Inverting
Number of Elements 1 1 1 1
Package Tube Tube Tube Tube
Package / Case 20-SOIC (0.209", 5.30mm Width) 20-DIP (0.300", 7.62mm) 20-DIP (0.300", 7.62mm) 20-DIP (0.300', 7.62mm)
Number of Bits per Element 8 8 8 8
Current - Output High, Low 100µA, 24mA -, 24mA 15mA, 24mA -, 48mA
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA)
Output Type Open Collector Open Collector 3-State Open Collector
Supplier Device Package 20-SO 20-PDIP 20-PDIP 20-PDIP
Mounting Type Surface Mount Through Hole Through Hole Through Hole

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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Texas Instruments

SN74LS642NS

Texas Instruments
32D-SN74LS642NS

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