DM74ALS14MX Equivalent & Substitute Parts

Part Overview

The DM74ALS14MX is a 6-channel inverter IC with Schmitt trigger functionality, manufactured by onsemi in a 14-SOIC surface mount package. This device is classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The Schmitt trigger feature provides noise immunity for logic signal inversion across industrial and commercial operating temperature ranges.

Substiute Parts

DM74ALS14MX

onsemiIn Stock: 2120DM74ALS14MX Datasheet

Current PartRFQ

SN74ALS04BDR

Texas InstrumentsIn Stock: 2247SN74ALS04BDR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS14MX is determined by the following critical parameters:

• Logic Function: Both main and substitute parts must be 6-channel inverters with single input configuration
• Schmitt Trigger Capability: The DM74ALS14MX includes Schmitt trigger functionality; however, the SN74ALS04BDR substitute does not specify this feature
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), output current ratings (400µA, 8mA), and propagation delay characteristics must remain within acceptable tolerances
• Package Compatibility: Both devices use 14-SOIC surface mount packaging with identical physical dimensions
• Operating Temperature Range: 0°C ~ 70°C compatibility required

The SN74ALS04BDR qualifies as a functional substitute based on matching logic type, circuit count, input configuration, supply voltage, output current specifications, and package form factor. The absence of Schmitt trigger specification in the substitute part requires circuit-level evaluation for applications dependent on noise immunity characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS04BDR from Texas Instruments is an active product substitute for the obsolete DM74ALS14MX. Selection is supported by:

• Product Availability: The SN74ALS04BDR maintains active production status with 2200 units in stock, addressing supply continuity for the obsolete DM74ALS14MX
• Electrical Compatibility: Matching supply voltage range, output current specifications, and propagation delay performance within 1ns differential ensure functional equivalence in standard logic applications
• Regulatory Compliance: The SN74ALS04BDR holds ROHS3 compliance certification, meeting current environmental and regulatory requirements
• Package Compatibility: Identical 14-SOIC surface mount packaging eliminates PCB redesign requirements
• Functional Equivalence: Both devices implement 6-channel inverter logic with single input configuration and identical operating temperature range

For applications where Schmitt trigger noise immunity is a design requirement, circuit-level analysis is necessary to determine whether the standard inverter characteristics of the SN74ALS04BDR provide sufficient performance.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS04BDR directly replace the DM74ALS14MX without PCB modifications?

A: Yes. Both devices use identical 14-SOIC surface mount packaging with matching pin configurations for 6-channel inverter logic. No PCB layout changes are required for physical substitution.

Q: What is the primary difference between these two parts?

A: The DM74ALS14MX includes Schmitt trigger functionality for enhanced noise immunity, while the SN74ALS04BDR is a standard inverter without this feature. Both provide equivalent logic inversion and electrical performance within the specified parameters.

Q: Are there compliance or regulatory differences between these parts?

A: The SN74ALS04BDR carries ROHS3 compliance certification. Both parts maintain REACH Unaffected status and share identical EAR99 export classification.

Q: How do the propagation delay specifications compare?

A: The SN74ALS04BDR exhibits 11ns maximum propagation delay at 5V with 50pF load, compared to 12ns for the DM74ALS14MX. This 1ns improvement does not affect functional compatibility in standard logic applications.

Q: What packaging options are available for the SN74ALS04BDR?

A: The SN74ALS04BDR is supplied in Cut Tape (CT) packaging format in the 14-SOIC configuration.

Q: Is the SN74ALS04BDR suitable for applications requiring Schmitt trigger input conditioning?

A: The SN74ALS04BDR does not specify Schmitt trigger characteristics. Applications dependent on hysteresis-based noise rejection require circuit-level evaluation to confirm adequate performance with standard inverter input thresholds.