SN74LS642NSR is available for purchase but is not normally stocked.
Available Substitutes:

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Rochester Electronics, LLC
In Stock: 6.909
Unit Price: 9,76000 €
Datasheet
Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SO
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SN74LS642NSR

DigiKey Part Number
296-29920-2-ND - Tape & Reel (TR)
Manufacturer
Manufacturer Product Number
SN74LS642NSR
Description
IC TXRX 4.75V/5.25V 20-SO
Manufacturer Standard Lead Time
6 Weeks
Customer Reference
Detailed Description
Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SO
Datasheet
 Datasheet
EDA/CAD Models
SN74LS642NSR Models
Product Attributes
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Category
Output Type
Open Collector
Manufacturer
Texas Instruments
Current - Output High, Low
-, 24mA
Series
Voltage - Supply
4.75V ~ 5.25V
Packaging
Tape & Reel (TR)
Operating Temperature
0°C ~ 70°C (TA)
Part Status
Active
Mounting Type
Surface Mount
Logic Type
Transceiver, Inverting
Package / Case
20-SOIC (0.209", 5.30mm Width)
Number of Elements
1
Supplier Device Package
20-SO
Number of Bits per Element
8
Base Product Number
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (1)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
SN74LS642DWRochester Electronics, LLC6.9092156-SN74LS642DW-ND9,76000 €Similar
Available To Order
Check Lead Time
This product is not kept in stock at DigiKey. The lead time shown will apply to the manufacturer’s shipment to DigiKey. Upon receiving the product, DigiKey will ship to fill open orders.
All prices are in EUR
Tape & Reel (TR)
QuantityUnit PriceExt Price
2.0007,72065 €15.441,30 €
Manufacturers Standard Package
Unit Price without VAT:7,72065 €
Unit Price with VAT:9,18757 €