SN74HC645N The SN74HC645N is an octal bus transceiver from Texas Instruments designed for asynchronous two-way communication between data buses. It operates over a wide voltage range and features 3-state outputs.
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SN74HC645N

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The SN74HC645N is an octal bus transceiver from Texas Instruments designed for asynchronous two-way communication between data buses. It operates over a wide voltage range and features 3-state outputs.
✓ Total Stock: 10 pcs
$ Price Range: $1.20

SN74HC645N Available from 1 distributor

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SN74HC645N Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Logic Type
Mounting Type
Number of Bits per Element
Number of Elements
Operating Temperature
Output Type
SVHC Present
Supplier Device Package
Supplier Package
Voltage

SN74HC645N Description

Short technical summary and product information.

The Texas Instruments SN74HC645N is an octal bus transceiver designed for efficient asynchronous two-way communication between data buses. This device can transmit data from the A bus to the B bus or vice versa, controlled by the direction-control (DIR) input. The output-enable (OE) input allows for disabling the device, effectively isolating the buses.

 

Key electrical characteristics include a wide operating voltage range of 2V to 6V, high-current 3-state outputs capable of driving up to 15 LSTTL loads, and low power consumption with a maximum ICC of 80 µA. It offers a typical propagation delay of 12 ns and ±6-mA output drive at 5V. The low input current is a maximum of 1 µA.

 

This transceiver is housed in a 20-pin PDIP package and is designed for through-hole mounting. Its operating temperature range is -40°C to 85°C (TA). The SN74HC645N is suitable for applications requiring bidirectional data transfer between different logic levels or buses where isolation is necessary.

SN74HC645N Quick Information

Product Type: Transceiver
Canonical Name: SN74HC645N Octal Bus Transceiver
Subcategory: Octal Bus Transceiver

SN74HC645N Compliance

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

SN74HC645N Estimated Pricing

Qty Low High
1+ $1.20 $1.20

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

SN74HC645N Features

  • Wide 2V to 6V operating voltage range.
  • High-current 3-state outputs.
  • Low power consumption, 80-µA max ICC.
  • Typical propagation delay of 12 ns.
  • Designed for through-hole mounting.

SN74HC645N Applications

  • Asynchronous two-way data bus communication.
  • Interfacing between different data buses.
  • Logic level translation applications.
  • Bus isolation using OE control.

SN74HC645N FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the SN74HC645N?

The SN74HC645N operates from 2V to 6V.

What package is the SN74HC645N available in?

The SN74HC645N is available in a 20-DIP (0.300", 7.62mm) package with through-hole mounting.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C (TA).

What is the typical propagation delay?

The typical propagation delay is 12ns.

What is the output drive current?

The output drive current is ±6mA at 5V typical.

How many bits does the SN74HC645N handle?

The SN74HC645N handles 8 bits per element with one element.

What is the output type of the SN74HC645N?

The output type is 3-State.

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