CD74HC173PW Equivalent & Substitute Parts

Part Overview

The CD74HC173PW is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 4-bit configuration in a 16-TSSOP surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The device functions as a master reset flip-flop with tri-state, non-inverted outputs, operating across a 2V to 6V supply range with a maximum clock frequency of 60 MHz.

Substiute Parts

CD74HC173PW

Texas InstrumentsIn Stock: 1693CD74HC173PW Datasheet

Current PartRFQ

CD74HC173PWR

Texas InstrumentsIn Stock: 3501CD74HC173PWR Datasheet

DirectRFQ

74HC173PW,118

Nexperia USA Inc.In Stock: 315474HC173PW,118 Datasheet

MFR RecommendedRFQ

MC74HC175ADTR2G

onsemiIn Stock: 2435MC74HC175ADTR2G Datasheet

MFR RecommendedRFQ

MM74HC175MTCX

Fairchild SemiconductorIn Stock: 2079MM74HC175MTCX Datasheet

MFR RecommendedRFQ

NLV74HC175ADTR2G

onsemiIn Stock: 3613NLV74HC175ADTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74HC173PW is determined by strict alignment of electrical and mechanical parameters within the 74HC logic family. The primary substitution criteria are:

Critical Parameters for Substitution:

• Package type: 16-TSSOP surface mount configuration
• Supply voltage range: 2V ~ 6V compatibility
• Trigger type: Positive edge
• Function: Master reset D-Type flip-flop
• Number of bits: 4-bit configuration
• Output configuration compatibility

Substitution Groups:

Group 1 - Direct 74HC173 Equivalents (Identical Base Product Number) These parts maintain the exact same base product number (74HC173) with tri-state, non-inverted outputs. Substitutes in this group are CD74HC173PWR and 74HC173PW,118.

Group 2 - 74HC175 Cross-Family Substitutes (Different Base Product Number) These parts use the 74HC175 base product number with complementary output configuration instead of tri-state non-inverted outputs. Substitutes include MC74HC175ADTR2G, MM74HC175MTCX, and NLV74HC175ADTR2G. These represent functional alternatives within the same logic family but with different output characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select CD74HC173PWR or 74HC173PW,118 when the original tri-state, non-inverted output configuration is required. Both maintain identical electrical specifications to the CD74HC173PW. CD74HC173PWR is supplied in Tape & Reel packaging and carries Active product status with full ROHS3 compliance and MSL 1 rating. The 74HC173PW,118 from Nexperia offers improved propagation delay (30 ns versus 34 ns) and lower quiescent current (4 µA versus 8 µA) while maintaining Active status and full compliance certifications.

For Cross-Family Substitution (When Output Configuration Change is Acceptable): The 74HC175 family substitutes (MC74HC175ADTR2G, MM74HC175MTCX, NLV74HC175ADTR2G) are suitable only when complementary output configuration can replace the original tri-state non-inverted outputs. MC74HC175ADTR2G and NLV74HC175ADTR2G both maintain Active or equivalent status with full temperature range coverage (-55°C ~ 125°C) and ROHS3 compliance. MM74HC175MTCX offers the widest clock frequency specification (70 MHz) but operates only to 85°C maximum and lacks specified MSL rating.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage requirements. Avoid NLV74HC175ADTR2G due to Obsolete product status despite technical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use 74HC175 parts as direct replacements for CD74HC173PW? A: The 74HC175 family shares the same 16-TSSOP package and supply voltage range but differs in output configuration. The CD74HC173PW provides tri-state, non-inverted outputs, while 74HC175 variants provide complementary outputs. Substitution is possible only if your circuit design accommodates complementary output logic.

Q: What is the difference between CD74HC173PWR and 74HC173PW,118? A: Both are direct 74HC173 equivalents with identical output configuration. CD74HC173PWR is manufactured by Texas Instruments (original manufacturer) in Tape & Reel packaging. The 74HC173PW,118 is manufactured by Nexperia USA Inc., also in Tape & Reel packaging, with improved propagation delay (30 ns vs. 34 ns) and lower quiescent current (4 µA vs. 8 µA). Both maintain Active product status and full compliance ratings.

Q: Why is the CD74HC173PW discontinued? A: The CD74HC173PW in Tube packaging is discontinued at DiGi Electronics. The equivalent CD74HC173PWR in Tape & Reel packaging remains in active production, providing a direct alternative for ongoing applications.

Q: What packaging options are available for 74HC173 equivalents? A: CD74HC173PWR and 74HC173PW,118 are supplied in Tape & Reel (TR) packaging, standard for production environments. The original CD74HC173PW was supplied in Tube packaging. All maintain the identical 16-TSSOP (0.173", 4.40mm Width) case format.

Q: Are all substitutes RoHS compliant? A: CD74HC173PWR, 74HC173PW,118, MC74HC175ADTR2G, and NLV74HC175ADTR2G are ROHS3 compliant. MM74HC175MTCX does not specify RoHS status in the provided data.

Q: Which substitute offers the best performance characteristics? A: For direct 74HC173 replacement, 74HC173PW,118 provides superior propagation delay (30 ns) and lower quiescent current (4 µA). For 74HC175 cross-family options, MC74HC175ADTR2G and NLV74HC175ADTR2G both deliver 22 ns propagation delay with 4 µA quiescent current and full temperature range coverage.

Q: What is the operating temperature range difference between substitutes? A: CD74HC173PWR, 74HC173PW,118, MC74HC175ADTR2G, and NLV74HC175ADTR2G all operate across -55°C ~ 125°C. MM74HC175MTCX operates only to 85°C maximum. For applications requiring full -55°C ~ 125°C range, avoid MM74HC175MTCX.