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SN74ALS642A-1N The Texas Instruments SN74ALS642A-1N is an inverting octal bus transceiver designed for asynchronous two-way communication between data buses. It operates from a 4.5V to 5.5V supply and features TTL compatible inputs and outputs.
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SN74ALS642A-1N

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments SN74ALS642A-1N is an inverting octal bus transceiver designed for asynchronous two-way communication between data buses. It operates from a 4.5V to 5.5V supply and features TTL compatible inputs and outputs.
✓ Total Stock: 71 pcs
$ Price Range: $4.94

SN74ALS642A-1N Available from 1 distributor

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SN74ALS642A-1N Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Input Type
Lead Spacing
Lead Style
Logic Type
Mounting Type
Number of Bits per Element
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SN74ALS642A-1N Description

Short technical summary and product information.

The SN74ALS642A-1N from Texas Instruments is an inverting octal bus transceiver, part of the ALS family, designed for efficient asynchronous two-way communication between data buses. This device supports 8 channels and operates within a voltage range of 4.5V to 5.5V, with TTL compatible inputs and outputs. It is characterized for operation from 0°C to 70°C.

 

Key electrical specifications include a maximum IOL of 48mA and a maximum IOH of 0.1mA. The transceiver's logic is inverting, meaning it transmits data from the A bus to the B bus or vice versa, depending on the direction control input. The output-enable input can disable the device, effectively isolating the buses.

 

Packaged in a 20-pin PDIP (Plastic Dual In-line Package) with through-hole mounting, the SN74ALS642A-1N is suitable for applications requiring robust bus interfacing. The device offers high-speed performance with propagation delays typically between 10-50ns and features over-voltage tolerant inputs.

SN74ALS642A-1N Quick Information

Product Type: Bus Transceiver
Series: 74ALS
Canonical Name: SN74ALS642A-1 Inverting Octal Bus Transceiver
Subcategory: Octal Bus Transceiver

SN74ALS642A-1N Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SN74ALS642A-1N Estimated Pricing

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1+ $4.94 $4.94

Estimated market price range - modelled values for guidance only, not live distributor offers.

SN74ALS642A-1N Features

  • 8 inverting channels for data transmission.
  • Operates from 4.5V to 5.5V supply voltage.
  • High-speed performance with 10-50ns tpd.
  • Over-voltage tolerant inputs for reliability.
  • TTL input and output compatibility.

SN74ALS642A-1N Applications

  • Facilitates asynchronous two-way data bus communication.
  • Enables bus isolation via output-enable control.
  • Suitable for TTL logic level interfacing.
  • Designed for general-purpose bus transceiving needs.

SN74ALS642A-1N FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the SN74ALS642A-1N?

The operating voltage range for the SN74ALS642A-1N is 4.5V to 5.5V.

What is the operating temperature range of the SN74ALS642A-1N?

The SN74ALS642A-1N operates within a temperature range of 0°C to 70°C (TA).

How many channels does the SN74ALS642A-1N have?

The SN74ALS642A-1N has 8 channels.

What is the maximum output current (IOL) for the SN74ALS642A-1N?

The maximum output current (IOL) for the SN74ALS642A-1N is 48mA.

What type of logic does the SN74ALS642A-1N use?

The SN74ALS642A-1N uses Transceiver, Inverting logic.

What is the package type for the SN74ALS642A-1N?

The SN74ALS642A-1N comes in a 20-DIP (0.300", 7.62mm) package.

Does the SN74ALS642A-1N have over-voltage tolerant inputs?

Yes, the SN74ALS642A-1N has over-voltage tolerant inputs.

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