DM74ALS251N Equivalent & Substitute Parts

Part Overview

The DM74ALS251N is a 1 x 8:1 multiplexer logic integrated circuit manufactured by onsemi in 16-DIP packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The DM74ALS251N operates with single supply voltage between 4.5V and 5.5V and is suitable for applications requiring 8-to-1 data selection in through-hole mounting configurations.

Substiute Parts

DM74ALS251N

onsemiIn Stock: 1382DM74ALS251N Datasheet

Current PartRFQ

SN74ALS251N

Texas InstrumentsIn Stock: 2226SN74ALS251N Datasheet

DirectRFQ

SN74ALS151N

Texas InstrumentsIn Stock: 2181SN74ALS151N Datasheet

Parametric EquivalentRFQ

SN74AS151N

Texas InstrumentsIn Stock: 2356SN74AS151N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS251N are classified based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters:

• Circuit configuration: 1 x 8:1 multiplexer
• Output current ratings: 2.6mA (high), 24mA (low)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Package type: 16-DIP (0.300", 7.62mm)
• Mounting method: Through Hole

Substitutes are grouped into two categories: direct manufacturer equivalents and parametric equivalents. Direct equivalents share identical part numbering schemes and base product numbers. Parametric equivalents maintain all electrical and mechanical specifications while differing in series designation or base product number.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS251N is the primary direct substitute for DM74ALS251N. Both parts share identical base product numbering and series designation (74ALS). The SN74ALS251N is manufactured by Texas Instruments with active product status and ROHS3 compliance, providing long-term availability and regulatory alignment.

SN74ALS151N and SN74AS151N are parametric equivalents meeting all electrical and mechanical specifications of the DM74ALS251N. Both are manufactured by Texas Instruments with active product status and ROHS3 compliance. The SN74ALS151N maintains the 74ALS series designation, while the SN74AS151N operates within the 74AS series. All three substitute parts are suitable for direct replacement in applications currently using the obsolete DM74ALS251N.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS251N directly replace DM74ALS251N in existing designs?

A: Yes. The SN74ALS251N maintains identical electrical specifications, output current ratings, supply voltage range, operating temperature range, and 16-DIP package configuration. No circuit modifications are required.

Q: What is the difference between SN74ALS151N and SN74ALS251N?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The difference lies in base product numbering (74ALS151 vs. 74ALS251). Both are suitable substitutes for the DM74ALS251N.

Q: How do the 74ALS and 74AS series differ?

A: The SN74ALS151N operates within the 74ALS series, while the SN74AS151N operates within the 74AS series. Both maintain the same electrical specifications required for DM74ALS251N substitution, including output current ratings, supply voltage, and operating temperature range.

Q: Are all substitute parts available in the same packaging?

A: Yes. All substitute parts are supplied in 16-DIP (0.300", 7.62mm) through-hole packaging, matching the DM74ALS251N package configuration.

Q: What compliance certifications apply to the substitute parts?

A: SN74ALS251N, SN74ALS151N, and SN74AS151N are all ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.