DM74AS08N Equivalent & Substitute Parts

Part Overview

The DM74AS08N is a 4-channel 2-input AND Gate logic IC manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates within the 74AS logic family standard, which defines consistent electrical and mechanical parameters across compatible devices from multiple manufacturers.

Substiute Parts

DM74AS08N

onsemiIn Stock: 1239DM74AS08N Datasheet

Current PartRFQ

SN74AS08N

Texas InstrumentsIn Stock: 2016SN74AS08N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74AS08N is determined by strict equivalence across the following parameters:

• Logic family and base product number (74AS08)
• Functional configuration: 4-channel AND gate with 2 inputs per channel
• Electrical specifications: supply voltage range, output current ratings, input logic levels, and propagation delay
• Physical package compatibility: 14-DIP form factor with 0.300" (7.62mm) pitch
• Through-hole mounting type

The SN74AS08N from Texas Instruments meets all these criteria as a parametric equivalent. Both devices share identical logic functionality, electrical performance characteristics, and physical package dimensions, enabling direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS08N is the direct parametric equivalent for the DM74AS08N. Selection between these parts should be based on the following factors:

Product Status: The DM74AS08N is obsolete, while the SN74AS08N maintains active production status. For new designs and long-term availability, the SN74AS08N is the preferred choice.

Compliance and Certifications: The SN74AS08N carries ROHS3 compliance certification, whereas the DM74AS08N does not specify RoHS status. Both parts are REACH Unaffected and classified under ECCN EAR99.

Packaging and Inventory: The SN74AS08N is supplied in tube packaging with 2000 units in stock, compared to the DM74AS08N in standard packaging with 1133 units available. Packaging format may influence procurement and handling procedures.

Electrical and Functional Equivalence: All electrical parameters, logic functionality, and physical dimensions are identical, ensuring direct substitution without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS08N directly replace the DM74AS08N without circuit modifications?

A: Yes. The SN74AS08N is a parametric equivalent with identical electrical specifications, logic functionality, and 14-DIP package dimensions. Direct substitution is possible without circuit changes.

Q: What is the significance of the DM74AS08N being obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. The SN74AS08N, maintained in active production by Texas Instruments, provides continuity of supply for equivalent functionality.

Q: Are there differences in package compatibility between these parts?

A: Both parts use the 14-DIP (0.300", 7.62mm) package format with through-hole mounting. They are mechanically and electrically compatible for PCB assembly.

Q: How do the electrical specifications compare?

A: All electrical parameters are identical: 4.5V to 5.5V supply voltage, 2mA/20mA output current ratings, 0.8V/2V input logic levels, and 5.5ns maximum propagation delay at 5V with 50pF load.

Q: What compliance certifications should be considered?

A: The SN74AS08N is ROHS3 compliant. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Does the tube packaging of the SN74AS08N affect compatibility?

A: Tube packaging is a supply format that does not affect electrical or mechanical compatibility. It may influence handling and storage procedures but does not impact circuit performance.