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74AC521 The Fairchild Semiconductor 74AC521SJ is an 8-bit identity comparator. It features an active low output and operates within a 2V to 6V supply voltage range.
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74AC521

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The Fairchild Semiconductor 74AC521SJ is an 8-bit identity comparator. It features an active low output and operates within a 2V to 6V supply voltage range.
✓ Total Stock: 864 pcs
$ Price Range: $0.50

74AC521 Available from 1 distributor

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864 pcs
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74AC521 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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74AC521 Description

Short technical summary and product information.

The 74AC521SJ from Fairchild Semiconductor is an 8-bit identity comparator designed for logic applications. This device features an active low output that indicates when two 8-bit inputs are equal (A=B).

 

It operates over a wide supply voltage range of 2V to 6V, with a typical quiescent current of 4 µA. The comparator can source and sink up to 24mA of current. Its maximum propagation delay is 8.5ns at 5V and 50pF, making it suitable for high-speed digital systems.

 

The 74AC521SJ is available in a 20-SOP package and is designed for surface mounting. The operating temperature range is -40°C to 85°C. This obsolete part is part of the 74AC series.

 

Key specifications include an 8-bit comparison capability, active low output, and a 2V to 6V operating voltage. The device is suitable for various digital logic and comparison tasks where precise equality detection is required.

74AC521 Quick Information

Product Type: Identity Comparator
Series: 74AC
Canonical Name: 74AC521SJ Identity Comparator
Subcategory: Comparators

74AC521 Compliance

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

74AC521 Estimated Pricing

Qty Low High
1+ $0.50 $0.50

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

74AC521 Features

  • 8-bit identity comparator
  • Active low A=B output
  • 2V to 6V supply voltage
  • Low 4µA quiescent current
  • Surface mount 20-SOP package

74AC521 Applications

  • Digital logic equality detection
  • Data comparison circuits
  • Control system logic
  • Embedded system interfaces

74AC521 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the 74AC521SJ?

The 74AC521SJ operates from 2V to 6V.

What is the package type for the 74AC521SJ?

The 74AC521SJ is available in a 20-SOP package.

What is the operating temperature range of the 74AC521SJ?

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

What is the RoHS status of the 74AC521SJ?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the 74AC521SJ?

The MSL is Level 1.

What is the REACH status for the 74AC521SJ?

The REACH status is REACH Unaffected.

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