CD74HC85EE4 Equivalent & Substitute Parts

Part Overview

The CD74HC85EE4 is a 4-bit magnitude comparator manufactured by Texas Instruments, designed to compare two 4-bit binary words and provide three active-high outputs indicating the relationship between inputs (A<B, A=B, A>B). This component is classified as discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.

The 74HC series magnitude comparator operates across a wide supply voltage range (2V to 6V) and is housed in a 16-pin DIP package suitable for through-hole mounting applications. Due to its discontinued status, sourcing active alternatives ensures design continuity and component availability.

Substiute Parts

CD74HC85EE4

Texas InstrumentsIn Stock: 1024CD74HC85EE4 Datasheet

Current PartRFQ

CD74HC85E

Texas InstrumentsIn Stock: 1326CD74HC85E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC85EE4 is determined by strict equivalence across the following critical parameters:

• Functional Type: 4-bit magnitude comparator with active-high outputs
• Output Configuration: Three comparison outputs (A<B, A=B, A>B)
• Electrical Specifications: Supply voltage range (2V–6V), output current (5.2mA), propagation delay (33ns @ 6V, 50pF), quiescent current (8 µA)
• Operating Temperature: -55°C to 125°C
• Package: 16-DIP through-hole form factor
• Compliance: ROHS3 and REACH requirements

The CD74HC85E qualifies as a direct substitute based on identical electrical and mechanical parameters. The primary distinction is product status: CD74HC85E is active and available, whereas CD74HC85EE4 is discontinued.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC85E is the appropriate substitute for the discontinued CD74HC85EE4. Both components are manufactured by Texas Instruments and share identical electrical characteristics, functional specifications, and package geometry. The CD74HC85E maintains active product status and full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment and long-term availability.

Selection of the CD74HC85E eliminates obsolescence risk while preserving circuit performance and design integrity. No circuit modifications or re-qualification are required for this substitution.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC85E be used as a direct replacement for the CD74HC85EE4?

A: Yes. Both parts are electrically and mechanically identical 4-bit magnitude comparators with the same supply voltage range, output current ratings, propagation delay, and 16-DIP package configuration. No design changes are necessary.

Q: What is the primary reason for substitution?

A: The CD74HC85EE4 is discontinued at DiGi Electronics. The CD74HC85E is an active product from the same manufacturer with identical specifications.

Q: Are there any compliance differences between these parts?

A: No. Both the CD74HC85EE4 and CD74HC85E are ROHS3 compliant and REACH unaffected.

Q: Will the CD74HC85E function in the same circuit without modifications?

A: Yes. Identical electrical specifications, output characteristics, and pin configuration ensure drop-in compatibility. No circuit redesign or component re-qualification is required.

Q: What is the difference between the packaging designations?

A: The CD74HC85EE4 uses a standard 16-PDIP package, while the CD74HC85E is supplied in tube packaging. Both use the same 16-DIP (0.300", 7.62mm) form factor suitable for through-hole mounting.