CD74HCT688E The Texas Instruments CD74HCT688E is an 8-bit identity/magnitude comparator with an enable function. It operates from 4.5V to 5.5V and is available in a 20-PDIP through-hole package.
Mfr Part #:

CD74HCT688E

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments CD74HCT688E is an 8-bit identity/magnitude comparator with an enable function. It operates from 4.5V to 5.5V and is available in a 20-PDIP through-hole package.
✓ Total Stock: 5,323 pcs
$ Price Range: $0.37

CD74HCT688E Available from 3 distributors

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✓ Non-Authorised
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4,352 pcs
4352 pcs On Request 1 On Request On Request On Request On Request On Request
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961 pcs
961 pcs On Request 1 On Request On Request 2003 On Request On Request
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10 pcs
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CD74HCT688E Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Lead Spacing
Lead Style
Max Propagation Delay @ V, Max CL
Mounting Type
Number of Bits
Operating Temperature
Output
Output Function
Supplier Device Package
Type
Voltage

CD74HCT688E Description

Short technical summary and product information.

The CD74HCT688E from Texas Instruments is an 8-bit identity or magnitude comparator designed for digital logic applications. This device features an enable input and an output that indicates when the two 8-bit inputs are equal (A=B). It operates within a voltage range of 4.5V to 5.5V, with a typical quiescent current of 8 µA. The comparator boasts a maximum propagation delay of 34ns at 4.5V and 50pF, making it suitable for high-speed applications.

 

Packaged in a 20-pin PDIP (Plastic Dual In-line Package) with a 0.300-inch body, the CD74HCT688E is designed for through-hole mounting. Its operating temperature range spans from -55°C to 125°C, ensuring reliable performance in various environmental conditions. This component is part of Texas Instruments' specialty logic ICs portfolio, offering robust comparison capabilities for digital systems.

CD74HCT688E Quick Information

Product Type: Comparator
Series: CD74HCT
Canonical Name: Texas Instruments CD74HCT688E 8-Bit Identity/Magnitude Comparator
Subcategory: Identity/Magnitude Comparators

CD74HCT688E Compliance

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

CD74HCT688E Estimated Pricing

Qty Low High
1+ $0.37 $0.37

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

CD74HCT688E Features

  • 8-bit identity/magnitude comparator
  • Active low output for A=B comparison
  • Operates from 4.5V to 5.5V supply
  • 34ns maximum propagation delay
  • Through-hole 20-PDIP package

CD74HCT688E Applications

  • Digital logic comparison circuits
  • Data validation applications
  • Control system logic
  • Embedded system design

CD74HCT688E FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the CD74HCT688E?

4.5V to 5.5V.

What package does the CD74HCT688E come in?

20-DIP (0.300", 7.62mm) through-hole package.

What is the operating temperature range of the CD74HCT688E?

-55°C to 125°C.

How many bits does the CD74HCT688E compare?

8 bits.

What is the propagation delay of the CD74HCT688E?

34 ns maximum at 4.5V with 50pF load.

What is the output function of the CD74HCT688E?

Active-low output when A equals B.

What is the quiescent current of the CD74HCT688E?

8 µA.

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