DM74ALS244AN Equivalent & Substitute Parts

Part Overview

The DM74ALS244AN is a non-inverting buffer logic integrated circuit manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This device operates within the 74ALS logic family and is housed in a 20-pin DIP package. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

DM74ALS244AN

onsemiIn Stock: 1949DM74ALS244AN Datasheet

Current PartRFQ

SN74ALS241CN

Texas InstrumentsIn Stock: 2149SN74ALS241CN Datasheet

Parametric EquivalentRFQ

SN74ALS244C-1N

Texas InstrumentsIn Stock: 5238SN74ALS244C-1N Datasheet

Parametric EquivalentRFQ

SN74ALS244CN

Texas InstrumentsIn Stock: 2046SN74ALS244CN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS244AN are qualified based on strict parametric equivalence across the following criteria:

• Logic type and functional configuration (Buffer, Non-Inverting)
• Element and bit-per-element count (2 elements, 4 bits per element)
• Output configuration (3-State)
• Output current specifications (15mA high, 24mA low)
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (0°C ~ 70°C)
• Physical package form factor (20-DIP)
• Through-hole mounting compatibility

All identified substitutes maintain identical electrical and mechanical parameters, ensuring direct functional replacement without circuit modification.

Parameter Comparison

Engineering Selection Recommendations

All three Texas Instruments substitutes—SN74ALS241CN, SN74ALS244C-1N, and SN74ALS244CN—are active production components with ROHS3 compliance certification. These parts provide direct functional equivalence to the obsolete DM74ALS244AN while offering improved supply chain availability and regulatory compliance status. Selection among the three Texas Instruments alternatives may be based on packaging format (all supplied in tube packaging) and inventory availability. The transition from the onsemi obsolete part to any of these active Texas Instruments equivalents eliminates long-term supply risk while maintaining full electrical and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS241CN, SN74ALS244C-1N, and SN74ALS244CN be used interchangeably with DM74ALS244AN?

A: Yes. All three Texas Instruments parts are parametric equivalents with identical logic type, element configuration, output specifications, supply voltage, operating temperature range, and 20-DIP package form factor. Direct substitution is supported without circuit modification.

Q: What is the difference between the three Texas Instruments substitute options?

A: The three parts—SN74ALS241CN, SN74ALS244C-1N, and SN74ALS244CN—share identical electrical and mechanical specifications. Differences exist only in part numbering conventions and base product designations. All are active production components with ROHS3 compliance.

Q: Why is the DM74ALS244AN classified as obsolete?

A: The DM74ALS244AN has reached end-of-life status with onsemi. Active production alternatives from Texas Instruments ensure continued availability and regulatory compliance for applications requiring 74ALS non-inverting buffer functionality.

Q: Are there any package or mounting differences between the main part and substitutes?

A: No. All parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging, ensuring direct PCB compatibility without layout modification.

Q: What compliance certifications apply to the substitute parts?

A: All three Texas Instruments substitutes carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements.