MM74HC154MTC Equivalent & Substitute Parts

Part Overview

The MM74HC154MTC is a 1 x 4:16 decoder/demultiplexer logic IC manufactured by onsemi in a 24-TSSOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74HC154 decoder function remains in active production through alternative manufacturers, enabling direct functional replacement in applications requiring 1 x 4:16 decoding logic.

Substiute Parts

MM74HC154MTC

onsemiIn Stock: 854MM74HC154MTC Datasheet

Current PartRFQ

74HC154PW,118

Nexperia USA Inc.In Stock: 2870874HC154PW,118 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM74HC154MTC is determined by strict equivalence across the following parameters:

• Base product number: 74HC154
• Circuit configuration: 1 x 4:16 decoder function
• Output current specifications: 5.2mA high and low
• Supply voltage range: 2V to 6V single supply
• Package type: 24-TSSOP with identical physical dimensions
• Moisture sensitivity level: MSL 1

The 74HC154PW,118 manufactured by Nexperia USA Inc. meets all these criteria. Both parts share identical electrical specifications, package geometry, and functional performance within the specified operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The 74HC154PW,118 from Nexperia USA Inc. is the direct functional equivalent for the obsolete MM74HC154MTC. Selection between these parts should be based on the following factors:

Product Status: The MM74HC154MTC is obsolete, while the 74HC154PW,118 maintains active production status. For new designs or long-term procurement requirements, the Nexperia part ensures continued availability and supply chain stability.

Compliance & Certifications: Both parts carry identical REACH Unaffected status and EAR99 export classification. The Nexperia part includes RoHS3 compliance certification, providing additional regulatory assurance for applications subject to RoHS requirements.

Operating Temperature: The Nexperia substitute extends the upper operating temperature limit to 125°C compared to the onsemi part's 85°C maximum. This provides additional thermal margin in applications operating near temperature limits, though both parts meet the specified -40°C to 85°C baseline requirement.

Inventory & Availability: The 74HC154PW,118 maintains significantly higher stock levels (28,654 units) compared to the MM74HC154MTC (778 units), supporting both immediate procurement and long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the 74HC154PW,118 directly replace the MM74HC154MTC in existing designs?

A: Yes. Both parts share identical electrical specifications, output current ratings, supply voltage range, and 24-TSSOP package geometry. No circuit modifications are required for direct substitution.

Q: Are there any differences in operating temperature ranges between these parts?

A: The MM74HC154MTC operates from -40°C to 85°C, while the 74HC154PW,118 extends to 125°C maximum. Both meet the baseline -40°C to 85°C specification. The extended upper limit on the Nexperia part provides additional thermal headroom but does not affect compatibility.

Q: What is the significance of the 24-TSSOP package specification?

A: The 24-TSSOP package is a thin shrink small-outline package with 0.173" width and 4.40mm height. Both parts use identical package geometry, ensuring PCB footprint compatibility and no layout modifications are necessary.

Q: Why is the MM74HC154MTC listed as obsolete?

A: Obsolete status indicates the manufacturer (onsemi) has discontinued production. The 74HC154 function remains available through active manufacturers like Nexperia, ensuring the decoder function continues to be supported in the market.

Q: Are moisture sensitivity levels identical between these parts?

A: Yes. Both parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Do both parts meet export and regulatory requirements?

A: Yes. Both parts are REACH Unaffected and classified as EAR99 for export purposes. The Nexperia part additionally carries RoHS3 compliance certification.