CD74HC85PWE4 Equivalent & Substitute Parts

Part Overview

The CD74HC85PWE4 is a 4-bit magnitude comparator logic IC manufactured by Texas Instruments in 16-TSSOP surface mount packaging. This component performs binary comparison operations, outputting active-high signals for A<B, A=B, and A>B conditions. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

CD74HC85PWE4

Texas InstrumentsIn Stock: 1153CD74HC85PWE4 Datasheet

Current PartRFQ

CD74HC85PW

Texas InstrumentsIn Stock: 1585CD74HC85PW Datasheet

MFR RecommendedRFQ

74HC85PW,118

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74HC85PWE4 is determined by strict equivalence across the following critical parameters:

• Functional equivalence: 4-bit magnitude comparator with identical output functions (A<B, A=B, A>B)
• Electrical compatibility: Supply voltage range 2V ~ 6V, output current 5.2mA, propagation delay 33ns @ 6V/50pF
• Package compatibility: 16-TSSOP surface mount form factor
• Thermal range: Operating temperature -55°C to 125°C (or compatible subset)
• Compliance: ROHS3 compliant, MSL Level 1

Two substitute parts meet these criteria: CD74HC85PW (Texas Instruments, tube packaging) and 74HC85PW,118 (Nexperia USA Inc., tape & reel packaging). Both maintain identical electrical specifications and package geometry, differing only in manufacturer, packaging format, and product status.

Parameter Comparison

Engineering Selection Recommendations

CD74HC85PW is a direct Texas Instruments substitute with identical electrical and thermal specifications. Both parts are discontinued at DiGi Electronics, making this option suitable only for existing inventory or secondary market sourcing.

74HC85PW,118 (Nexperia) is the preferred substitute for new designs and ongoing production. This part maintains full electrical equivalence and is currently active in the market. The operating temperature range is -40°C to 125°C, which covers standard industrial applications. Tape & reel packaging is standard for high-volume production environments. All three parts are ROHS3 compliant with MSL Level 1 rating.

Frequently Asked Questions (FAQ)

Q: Can 74HC85PW,118 replace CD74HC85PWE4 in existing designs? A: Yes. Both parts are 4-bit magnitude comparators with identical electrical specifications, output functions, and 16-TSSOP packaging. The operating temperature range difference (-40°C vs -55°C minimum) is not a constraint for standard applications.

Q: What is the difference between tube and tape & reel packaging? A: Tube packaging (CD74HC85PW) is used for lower-volume orders and manual assembly. Tape & reel packaging (74HC85PW,118) is standard for automated pick-and-place assembly and high-volume production. Both formats contain the same component.

Q: Are all three parts pin-compatible? A: Yes. All three parts use the 16-TSSOP package with identical pinout and electrical characteristics.

Q: Why is CD74HC85PWE4 discontinued? A: The main part number is discontinued at DiGi Electronics. Equivalent alternatives (CD74HC85PW and 74HC85PW,118) remain available through alternative channels or active suppliers.

Q: Which substitute should I choose for new production? A: 74HC85PW,118 is the recommended choice due to active product status and standard tape & reel packaging for automated assembly.