CD74HC85PWTE4 Equivalent & Substitute Parts

Part Overview

The CD74HC85PWTE4 is a 4-bit magnitude comparator logic IC manufactured by Texas Instruments in 16-TSSOP surface mount packaging. This device performs parallel magnitude comparison of two 4-bit binary words, providing three active-high outputs: A<B, A=B, and A>B. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

CD74HC85PWTE4

Texas InstrumentsIn Stock: 784CD74HC85PWTE4 Datasheet

Current PartRFQ

CD74HC85PWT

Texas InstrumentsIn Stock: 1779CD74HC85PWT Datasheet

MFR RecommendedRFQ

74HC85PW,118

Nexperia USA Inc.In Stock: 727074HC85PW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC85PWTE4 is determined by the following critical parameters that must remain constant across all equivalent parts:

• 4-bit magnitude comparator function with active-high outputs (A<B, A=B, A>B)
• 16-TSSOP surface mount package (0.173", 4.40mm Width)
• Supply voltage range: 2V to 6V
• Output current capability: 5.2mA (high and low)
• Propagation delay: 33ns @ 6V, 50pF
• Quiescent current: 8 µA
• Operating temperature range: -55°C to 125°C minimum
• RoHS3 compliance and MSL Level 1

The substitute parts identified maintain identical electrical specifications and package geometry, differing only in manufacturer, product status, and packaging format (tube vs. tape & reel).

Parameter Comparison

Engineering Selection Recommendations

CD74HC85PWT (Texas Instruments) is the manufacturer-recommended substitute for the CD74HC85PWTE4. Both parts are manufactured by Texas Instruments with identical electrical and thermal specifications. The primary difference is packaging format: CD74HC85PWT is supplied in tape & reel format versus the tube packaging of the original part. Both parts are discontinued at DiGi Electronics.

74HC85PW,118 (Nexperia USA Inc.) provides a functionally equivalent alternative with active product status. This part maintains all critical electrical parameters and package geometry. The operating temperature range is -40°C to 125°C, which is narrower at the lower end compared to the -55°C to 125°C range of the Texas Instruments versions. Selection of the Nexperia part is appropriate for applications where the lower temperature limit of -40°C is acceptable. All three parts carry ROHS3 compliance and MSL Level 1 ratings.

Frequently Asked Questions (FAQ)

Q: Can CD74HC85PWT be used as a direct replacement for CD74HC85PWTE4?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, output characteristics, and 16-TSSOP package geometry. The difference is packaging format (tape & reel vs. tube). Pin configuration and functional behavior are identical.

Q: What is the difference between the Texas Instruments and Nexperia versions?

A: The 74HC85PW,118 (Nexperia) maintains all critical electrical parameters and package specifications. The operating temperature range differs: Nexperia specifies -40°C to 125°C versus -55°C to 125°C for Texas Instruments. Select the Nexperia part only if your application does not require operation below -40°C.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-TSSOP package with identical pin assignments and functional outputs (A<B, A=B, A>B).

Q: Do all substitute parts meet RoHS requirements?

A: Yes. CD74HC85PWT, 74HC85PW,118, and the original CD74HC85PWTE4 are all ROHS3 compliant with MSL Level 1 ratings.

Q: Which substitute should I select for new designs?

A: The 74HC85PW,118 (Nexperia) is recommended for new designs due to its active product status. Verify that the -40°C to 125°C operating temperature range meets your application requirements.