74HCT125D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT125D,652 is a non-inverting buffer logic IC manufactured by Nexperia USA Inc., featuring 4 elements with 3-state output capability in a 14-SOIC package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device operates across a 4.5V to 5.5V supply range with 6mA output current capability and is suitable for applications requiring signal buffering with tri-state control in surface-mount configurations.

Substiute Parts

74HCT125D,652

Nexperia USA Inc.In Stock: 114774HCT125D,652 Datasheet

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74HCT125D,653

NXP SemiconductorsIn Stock: 428574HCT125D,653 Datasheet

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CD74HCT125M

Harris CorporationIn Stock: 1333CD74HCT125M Datasheet

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CD74HCT125M96

Texas InstrumentsIn Stock: 4131CD74HCT125M96 Datasheet

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CD74HCT125MT

Texas InstrumentsIn Stock: 2958CD74HCT125MT Datasheet

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MC74HCT125ADG

onsemiIn Stock: 3127MC74HCT125ADG Datasheet

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MC74HCT125ADR2G

onsemiIn Stock: 15105MC74HCT125ADR2G Datasheet

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SN74HCT125D

Texas InstrumentsIn Stock: 3505SN74HCT125D Datasheet

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SN74HCT125DE4

Texas InstrumentsIn Stock: 971SN74HCT125DE4 Datasheet

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SN74HCT125DR

Texas InstrumentsIn Stock: 3625SN74HCT125DR Datasheet

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SN74HCT125DT

Texas InstrumentsIn Stock: 4386SN74HCT125DT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HCT125D,652 is determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 4
• Number of Bits per Element: 1
• Output Type: 3-State
• Output Current: 6mA, 6mA
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Substitute parts are grouped into two categories based on supply voltage compatibility:

Category A - Direct Voltage Match (4.5V ~ 5.5V): Parts with identical supply voltage specifications to the main part, ensuring drop-in compatibility without circuit redesign.

Category B - Extended Voltage Range (2V ~ 6V or -55°C ~ 125°C): Parts with broader operating specifications that encompass the main part's requirements, offering enhanced environmental tolerance and design flexibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Active Status with Full Compliance:

SN74HCT125DR (Texas Instruments) is the preferred substitute. This part maintains active product status, ROHS3 compliance, and MSL 1 rating. While the operating temperature range is -40°C to 85°C (narrower than the original -40°C to 125°C), this specification remains suitable for standard industrial applications. The part is available in Cut Tape and Digi-Reel packaging.

Alternative - Extended Temperature Range:

CD74HCT125M96 (Texas Instruments) provides extended operating temperature coverage from -55°C to 125°C, matching the original part's upper temperature limit. This part maintains active status, ROHS3 compliance, and MSL 1 rating, making it suitable for applications requiring broader thermal performance.

Extended Voltage Range Option:

MC74HCT125ADR2G (onsemi) offers the broadest supply voltage range (2V ~ 6V) and extended temperature range (-55°C ~ 125°C), providing maximum design flexibility. This part is currently active and fully compliant with ROHS3 and MSL 1 requirements.

Avoid:

CD74HCT125M (Harris Corporation) is RoHS non-compliant and obsolete, making it unsuitable for new designs or procurement.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HCT125DR as a direct replacement for 74HCT125D,652?

A: Yes. Both parts share identical logic type, element count, output type, current ratings, and 14-SOIC package. The SN74HCT125DR operates at -40°C to 85°C versus the original's -40°C to 125°C. For applications within the -40°C to 85°C range, this part provides full functional equivalence.

Q: What is the difference between parts with 4.5V ~ 5.5V and 2V ~ 6V supply ratings?

A: Parts rated 2V ~ 6V (such as MC74HCT125ADR2G) operate across a broader voltage range and can function in applications with lower or higher supply voltages. Parts rated 4.5V ~ 5.5V are optimized for standard TTL/CMOS logic levels. Both are electrically equivalent within the 4.5V ~ 5.5V overlap range.

Q: Does packaging type affect substitution compatibility?

A: All substitute parts listed use the 14-SOIC (0.154", 3.90mm Width) package, ensuring mechanical and electrical compatibility on PCBs designed for the original part. Packaging variants (Tube, Cut Tape, Tape & Reel) affect handling and supply chain logistics but not functional performance.

Q: Why is 74HCT125D,653 listed as a substitute if it is from NXP?

A: The 74HCT125D,653 is electrically and mechanically identical to the original part, manufactured by NXP Semiconductors (the successor to Philips Semiconductors, which became Nexperia). It maintains the same 14-SOIC package, logic specifications, and voltage/current ratings. The primary difference is active product status and availability.

Q: Are all listed substitutes ROHS3 compliant?

A: No. CD74HCT125M (Harris Corporation) is RoHS non-compliant. All other listed parts are ROHS3 compliant. For applications requiring RoHS compliance, exclude CD74HCT125M from consideration.

Q: What does MSL 1 (Unlimited) mean?

A: MSL 1 indicates Moisture Sensitivity Level 1, the lowest moisture sensitivity classification. "Unlimited" means the part has no shelf-life restrictions related to moisture exposure and does not require special dry-pack storage or baking procedures before soldering.