DM74ALS5245WMX Equivalent & Substitute Parts

Part Overview

The DM74ALS5245WMX is a Buffer, Non-Inverting logic IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability in a 20-SOIC package. This device operates within the 4.5V to 5.5V supply voltage range and is rated for 0°C to 70°C operating temperature. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

DM74ALS5245WMX

onsemiIn Stock: 953DM74ALS5245WMX Datasheet

Current PartRFQ

SN74ALS245A-1DW

Texas InstrumentsIn Stock: 2476SN74ALS245A-1DW Datasheet

SimilarRFQ

SN74ALS245A-1DWR

Texas InstrumentsIn Stock: 791SN74ALS245A-1DWR Datasheet

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SN74ALS245A-1NSR

Texas InstrumentsIn Stock: 2578SN74ALS245A-1NSR Datasheet

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SN74ALS245ANSR

Texas InstrumentsIn Stock: 2219SN74ALS245ANSR Datasheet

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SN74ALS541DWR

Texas InstrumentsIn Stock: 2176SN74ALS541DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74ALS5245WMX is determined by strict alignment of the following critical parameters:

• Logic Type & Function: Buffer or Transceiver, Non-Inverting configuration
• Bit Configuration: 1 element with 8 bits per element
• Output Architecture: 3-state output capability
• Electrical Specifications: 15mA/24mA output current, 4.5V–5.5V supply voltage
• Operating Temperature Range: 0°C to 70°C
• Package Form Factor: 20-SOIC or 20-SO surface mount packages
• Series Compatibility: 74ALS logic family

Substitute parts are categorized into two groups:

Group 1 - Functional Equivalents (Buffer, Non-Inverting): SN74ALS541DWR maintains identical logic type and all electrical parameters.

Group 2 - Functional Alternatives (Transceiver, Non-Inverting): SN74ALS245A-1DW, SN74ALS245A-1DWR, SN74ALS245A-1NSR, and SN74ALS245ANSR provide transceiver functionality with identical electrical specifications and package compatibility. These parts share the same base product number (74ALS245) and operate within the same parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74ALS541DWR

The SN74ALS541DWR is the direct functional equivalent, maintaining identical Buffer, Non-Inverting logic type and all electrical parameters. This part is manufactured by Texas Instruments with Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The 20-SOIC package matches the original form factor precisely.

Secondary Recommendations: SN74ALS245A Series (Transceiver Variants)

The SN74ALS245A-1DW, SN74ALS245A-1DWR, SN74ALS245A-1NSR, and SN74ALS245ANSR provide functional alternatives with transceiver capability instead of buffer-only operation. All maintain identical electrical specifications, 3-state output architecture, and 74ALS series compatibility. These parts offer expanded functionality within the same parameter envelope.

Package Considerations:

• SN74ALS245A-1DW and SN74ALS245A-1DWR: 20-SOIC (0.295", 7.50mm) — direct PCB footprint compatibility
• SN74ALS245A-1NSR and SN74ALS245ANSR: 20-SO (0.209", 5.30mm) — narrower body, requires PCB layout verification

Compliance & Availability:

All recommended substitutes carry ROHS3 compliance and MSL Level 1 rating. SN74ALS541DWR and SN74ALS245A-1DWR/NSR maintain Active product status, ensuring sustained supply chain availability. SN74ALS245A-1DW is designated Last Time Buy, indicating limited future availability.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS245A transceiver parts directly replace the DM74ALS5245WMX buffer?

A: Yes, within the specified electrical and functional parameters. The transceiver variants provide bidirectional data flow capability while maintaining identical output current ratings (15mA/24mA), supply voltage range (4.5V–5.5V), and operating temperature specifications (0°C–70°C). Circuit design must accommodate the transceiver's directional control requirements.

Q: What is the difference between 20-SOIC and 20-SO packages?

A: The 20-SOIC package has a body width of 0.295" (7.50mm), while the 20-SO package has a narrower body width of 0.209" (5.30mm). Both are surface mount packages with identical pin counts and pitch. PCB footprints are not interchangeable; verify layout compatibility before substitution.

Q: Why is the DM74ALS5245WMX classified as obsolete?

A: Obsolete status indicates the manufacturer (onsemi) has discontinued production. Active alternatives from Texas Instruments ensure design continuity and long-term component availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All Texas Instruments substitute parts carry ROHS3 compliance certification. The original DM74ALS5245WMX does not specify RoHS status.

Q: Which substitute offers the best long-term availability?

A: SN74ALS541DWR and SN74ALS245A-1DWR/NSR maintain Active product status from Texas Instruments, ensuring sustained manufacturing and supply chain support. SN74ALS245A-1DW is designated Last Time Buy, indicating limited future production.

Q: Can I use SN74ALS245A parts in existing designs without circuit modification?

A: Electrical parameters are identical, enabling direct substitution in most applications. However, transceiver functionality requires directional control logic not present in buffer-only designs. Verify circuit requirements before implementation.