74HC85PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC85PW,112 is a 4-bit magnitude comparator logic IC manufactured by Nexperia USA Inc., housed in a 16-TSSOP surface mount package. This component performs binary comparison operations, outputting active-high signals for A<B, A=B, and A>B conditions. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and ensure supply chain reliability.

Substiute Parts

74HC85PW,112

Nexperia USA Inc.In Stock: 111874HC85PW,112 Datasheet

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CD74HC85PW

Texas InstrumentsIn Stock: 1585CD74HC85PW Datasheet

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CD74HC85PWR

Texas InstrumentsIn Stock: 4290CD74HC85PWR Datasheet

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CD74HC85PWT

Texas InstrumentsIn Stock: 1779CD74HC85PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC85PW,112 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Functional type: 4-bit magnitude comparator
• Output logic: Active high (A<B, A=B, A>B)
• Supply voltage range: 2V to 6V
• Output current capability: 5.2mA minimum (both high and low)
• Propagation delay: 33ns maximum @ 6V, 50pF load
• Quiescent current: 8 µA maximum
• Package: 16-TSSOP surface mount
• Base product series: 74HC85

All three substitute parts—CD74HC85PW, CD74HC85PWR, and CD74HC85PWT—manufactured by Texas Instruments, meet these electrical specifications identically. Differences exist only in product status, operating temperature range extension, and packaging format (tube vs. tape & reel), which do not affect functional substitution capability.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HC85PWR

CD74HC85PWR is the preferred substitute for new designs and replenishment orders. This part is manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain stability. It meets all electrical and mechanical specifications of the original 74HC85PW,112, with an extended lower operating temperature limit (-55°C vs. -40°C), providing additional thermal margin. The tape & reel packaging format supports automated assembly processes. Current inventory of 4,215 units confirms immediate availability.

Secondary Options: CD74HC85PW and CD74HC85PWT

Both alternatives are functionally equivalent and electrically interchangeable with the primary recommendation. CD74HC85PW is supplied in tube packaging, suitable for manual assembly or lower-volume applications. CD74HC85PWT is supplied in tape & reel format. Both parts are listed as discontinued at DiGi Electronics, indicating limited future availability compared to CD74HC85PWR.

Compliance Verification

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can CD74HC85PWR be used as a direct replacement for 74HC85PW,112 in existing designs?

A: Yes. CD74HC85PWR is electrically and mechanically identical to the original part across all critical parameters: 4-bit magnitude comparator function, active-high output logic, 2V to 6V supply range, 5.2mA output current, 33ns propagation delay, and 16-TSSOP surface mount package. No circuit modifications are required.

Q: What is the difference between CD74HC85PWR, CD74HC85PW, and CD74HC85PWT?

A: The three parts are electrically identical. Differences are limited to packaging format and product status. CD74HC85PWR uses tape & reel packaging and maintains active product status. CD74HC85PW uses tube packaging and is discontinued at DiGi Electronics. CD74HC85PWT uses tape & reel packaging and is discontinued at DiGi Electronics. All three are functionally interchangeable.

Q: Does the extended operating temperature range of the Texas Instruments parts (-55°C to 125°C vs. -40°C to 125°C) affect substitution?

A: No. The extended lower temperature limit of the Texas Instruments parts provides additional thermal margin and does not create any compatibility issues. The original specification of -40°C to 125°C is fully contained within the substitute range.

Q: Are there any pin configuration differences between the Nexperia and Texas Instruments versions?

A: No. Both manufacturers use the identical 16-TSSOP package with identical pin assignments for the 74HC85 base product. Pin-for-pin compatibility is guaranteed.

Q: What packaging considerations apply when selecting between these substitutes?

A: CD74HC85PWR (tape & reel) is optimized for high-volume automated assembly. CD74HC85PW (tube) is suitable for manual assembly or lower-volume applications. Both formats contain the same die and are electrically identical. Selection depends on assembly process requirements, not functional performance.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All three substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 74HC85PW,112.