DM74LS258BN Equivalent & Substitute Parts

Part Overview

The DM74LS258BN is a 4 x 2:1 multiplexer logic integrated circuit manufactured by onsemi in a 16-DIP through-hole package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement. The part operates as a single independent multiplexer circuit suitable for digital signal routing applications in legacy systems.

Substiute Parts

DM74LS258BN

onsemiIn Stock: 5149DM74LS258BN Datasheet

Current PartRFQ

SN74LS258BN

onsemiIn Stock: 16312SN74LS258BN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN74LS258BN qualifies as a direct substitute for the DM74LS258BN based on the following critical parameters:

• Identical circuit configuration: 4 x 2:1 multiplexer topology
• Matching package specification: 16-DIP (0.300", 7.62mm)
• Same series classification: 74LS logic family
• Identical mounting type: Through Hole
• Equivalent base product number: 74LS258
• Matching electrical characteristics: Single supply operation, specified output current ratings, and operating temperature range

Both parts share the same functional pinout and electrical interface requirements, enabling direct substitution in circuit designs without modification to PCB layouts or signal routing.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS258BN is the direct equivalent for the DM74LS258BN. Both components share identical functional specifications, package geometry, and mounting requirements. Selection between these parts should be based on procurement availability and inventory status rather than technical differentiation.

For new designs or systems requiring RoHS compliance, alternative multiplexer solutions in modern packaging and compliant material composition should be evaluated. Both the DM74LS258BN and SN74LS258BN are classified as obsolete products, indicating limited long-term availability through standard distribution channels.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS258BN directly replace the DM74LS258BN without PCB modification?

A: Yes. Both parts use identical 16-DIP package geometry and pinout configuration. Direct socket substitution is possible without circuit board redesign.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is determined by matching circuit configuration (4 x 2:1 multiplexer), package type (16-DIP), mounting method (through hole), and series classification (74LS). Both parts meet these criteria.

Q: Are there electrical performance differences between these parts?

A: The SN74LS258BN provides specified electrical parameters (output current ratings, supply voltage range, operating temperature). The DM74LS258BN datasheet does not include these specifications in the provided documentation. Both operate within standard 74LS logic family electrical characteristics.

Q: What is the significance of the obsolete product status?

A: Obsolete classification indicates these components are no longer in active production. Procurement should prioritize available inventory from authorized distributors. Long-term availability cannot be guaranteed.

Q: Are there compliance considerations for new applications?

A: Both parts are RoHS non-compliant. Applications subject to RoHS regulations require evaluation of alternative multiplexer solutions in modern packaging with compliant material composition.