MM74HCT05M Equivalent & Substitute Parts

Part Overview

The MM74HCT05M is a 6-channel inverter IC with open drain output configuration, manufactured by onsemi in a 14-SOIC surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for logic-level signal inversion in digital circuits requiring open drain output characteristics.

Substiute Parts

MM74HCT05M

onsemiIn Stock: 2287MM74HCT05M Datasheet

Current PartRFQ

SN74LS05D

Texas InstrumentsIn Stock: 5981SN74LS05D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MM74HCT05M is determined by the following critical parameters:

• Logic function: 6-channel inverter with single input per channel
• Output configuration: Open drain topology
• Supply voltage compatibility: 4.5V to 5.5V operating range
• Package type: 14-SOIC surface mount form factor
• Input/output electrical characteristics: Logic levels and propagation delay specifications
• Operating temperature range: -40°C to 85°C

The SN74LS05D qualifies as a substitute based on its hex inverter (6-channel) configuration and open drain output characteristics. Both devices perform identical logic inversion functions and share compatible package footprints suitable for direct replacement in 14-SOIC applications.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS05D is suitable as a substitute for the MM74HCT05M based on functional equivalence and package compatibility. The SN74LS05D maintains active product status with Texas Instruments, ensuring continued availability and supply chain reliability. Both devices are REACH unaffected and operate within compatible electrical specifications for hex inverter applications with open drain outputs in 14-SOIC packaging.

Selection between these parts should account for supply chain availability, lead time requirements, and compliance certifications applicable to the end application. The active status of the SN74LS05D provides advantages for long-term production continuity.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS05D directly replace the MM74HCT05M in existing designs?

A: Yes. Both devices are 6-channel inverters with open drain outputs in 14-SOIC packages. Pin configuration and functional behavior are compatible for direct substitution.

Q: What are the key differences between the 74HCT and 74LS series?

A: The 74HCT series uses CMOS technology while the 74LS series uses TTL technology. Both series provide compatible logic levels and open drain output configurations suitable for the same applications.

Q: Is the SN74LS05D RoHS compliant?

A: RoHS compliance status for the SN74LS05D is not specified in the available data. Verify compliance requirements with the manufacturer or supplier for your specific application.

Q: Are there any package considerations when substituting these parts?

A: Both parts use identical 14-SOIC (0.154", 3.90mm Width) packaging. No PCB layout modifications are required for substitution.

Q: Why is the MM74HCT05M listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. The SN74LS05D provides functional continuity for applications requiring hex inverter functionality with open drain outputs.