74ACT125SC Equivalent & Substitute Parts

Part Overview

The 74ACT125SC is a non-inverting buffer logic integrated circuit manufactured by onsemi, featuring 4 elements with 1 bit per element and 3-state output capability. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. The 14-SOIC surface mount package provides standard form factor compatibility across multiple substitute options.

Substiute Parts

74ACT125SC

onsemiIn Stock: 146874ACT125SC Datasheet

Current PartRFQ

MC74ACT125DR2G

onsemiIn Stock: 4275MC74ACT125DR2G Datasheet

SimilarRFQ

MC74ACT125DG

onsemiIn Stock: 7971MC74ACT125DG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT125SC are qualified based on identical electrical and mechanical parameters. The substitution criteria are strictly limited to the following parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 4
• Number of Bits per Element: 1
• Output Type: 3-State
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Series: 74ACT

All substitute parts listed maintain these exact specifications. Differences in product status, packaging format (Tape & Reel versus Tube), and compliance certifications do not affect functional or electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both MC74ACT125DR2G and MC74ACT125DG are functionally equivalent to the 74ACT125SC and are suitable for direct substitution in applications requiring non-inverting buffer logic with 3-state output capability.

MC74ACT125DR2G is supplied in Tape & Reel format and carries ROHS3 compliance certification, making it appropriate for high-volume production environments and applications subject to RoHS regulatory requirements.

MC74ACT125DG is supplied in Tube packaging and also carries ROHS3 compliance certification, suitable for lower-volume procurement and manual assembly operations.

Both substitute parts maintain identical electrical performance, thermal operating range, and supply voltage specifications as the original 74ACT125SC. The selection between these two alternatives depends on packaging format requirements and procurement volume considerations.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT125DR2G and MC74ACT125DG be used interchangeably with 74ACT125SC?

A: Yes. Both parts are parametrically equivalent across all electrical and mechanical specifications. The differences are limited to product status (active versus obsolete), packaging format (Tape & Reel or Tube), and RoHS compliance certification. These differences do not affect functional compatibility or electrical performance in circuit applications.

Q: What is the difference between Tape & Reel and Tube packaging?

A: Tape & Reel packaging is used for automated assembly processes and high-volume production runs. Tube packaging is used for manual assembly and lower-volume applications. Both formats contain identical components with the same electrical specifications and performance characteristics.

Q: Are the substitute parts RoHS compliant?

A: Both MC74ACT125DR2G and MC74ACT125DG are ROHS3 compliant. The original 74ACT125SC does not specify RoHS status. If RoHS compliance is a requirement for your application, either substitute part satisfies this requirement.

Q: Do the substitute parts have the same pin configuration as 74ACT125SC?

A: Yes. All parts use the 14-SOIC package with identical pin assignments and functionality. Direct PCB layout compatibility is maintained.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts, including the original 74ACT125SC and both substitutes, have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.