DM74ALS137M Equivalent & Substitute Parts

Part Overview

The DM74ALS137M is a Decoder/Demultiplexer logic IC manufactured by onsemi, featuring a 1 x 3:8 circuit configuration in a 16-SOIC surface mount package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The part operates within a single supply voltage range of 4.5V to 5.5V and is suitable for applications requiring address decoding and demultiplexing functions in digital logic systems.

Substiute Parts

DM74ALS137M

onsemiIn Stock: 837DM74ALS137M Datasheet

Current PartRFQ

SN74ALS137AD

Texas InstrumentsIn Stock: 783SN74ALS137AD Datasheet

Parametric EquivalentRFQ

SN74ALS138AD

Texas InstrumentsIn Stock: 2021SN74ALS138AD Datasheet

Parametric EquivalentRFQ

SN74AS138D

Texas InstrumentsIn Stock: 1175SN74AS138D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS137M are qualified based on the following critical parameters that determine functional and physical compatibility:

Electrical Parameters:

• Circuit configuration: 1 x 3:8 decoder/demultiplexer function
• Voltage supply range: 4.5V ~ 5.5V
• Output current specifications: 400µA (high), 8mA (low)
• Operating temperature range: 0°C ~ 70°C

Physical Parameters:

• Package type: 16-SOIC surface mount
• Package dimensions: 0.154" width (3.90mm)

Functional Parameters:

• Single supply voltage source operation
• Decoder/demultiplexer topology with 1 independent circuit

All identified substitute parts maintain these core parameters, ensuring direct functional replacement capability within the specified electrical and thermal operating conditions.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS137AD (Texas Instruments): This part maintains the 74ALS series designation and provides parametric equivalence to the DM74ALS137M. With Last Time Buy status and ROHS3 compliance, it represents a direct functional replacement. Availability is documented at 719 pieces in stock.

SN74ALS138AD (Texas Instruments): Also a 74ALS series device with identical electrical and physical specifications. This part carries Last Time Buy status and ROHS3 compliance certification. Current inventory is 2000 pieces, providing higher availability for production requirements.

SN74AS138D (Texas Instruments): This part operates within the 74AS logic family, maintaining all critical electrical parameters and physical package specifications. Unlike the other substitutes, this device carries Active product status, ensuring long-term availability and continued manufacturing support. ROHS3 compliance is confirmed. Inventory stands at 1156 pieces.

For applications requiring extended product lifecycle support, SN74AS138D is the preferred selection due to its Active status. For immediate replacement with Last Time Buy alternatives, both SN74ALS137AD and SN74ALS138AD are functionally equivalent options.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS137AD directly replace DM74ALS137M in existing designs?

A: Yes. Both parts share identical circuit configuration (1 x 3:8), package type (16-SOIC), voltage supply range (4.5V ~ 5.5V), output current specifications (400µA, 8mA), and operating temperature range (0°C ~ 70°C). No design modifications are required.

Q: What is the difference between the 74ALS and 74AS series options?

A: Both series maintain the same electrical parameters and package specifications for this decoder/demultiplexer function. The primary distinction is product status: 74ALS variants carry Last Time Buy designation, while the 74AS option (SN74AS138D) maintains Active status for continued manufacturing availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SN74ALS137AD, SN74ALS138AD, and SN74AS138D all carry ROHS3 Compliant certification. All parts maintain REACH Unaffected status and Moisture Sensitivity Level 1 (Unlimited).

Q: Which substitute part offers the longest product lifecycle?

A: SN74AS138D carries Active product status, indicating ongoing manufacturing support and availability. The 74ALS variants (SN74ALS137AD and SN74ALS138AD) are designated Last Time Buy, indicating limited future availability.

Q: Are there any package or pinout differences between these parts?

A: No. All substitute parts use the 16-SOIC surface mount package with 0.154" width (3.90mm). Pinout and package dimensions are identical, enabling direct board-level substitution.