DM74S09N Equivalent & Substitute Parts

Part Overview

The DM74S09N is a 4-channel AND gate logic IC with open collector output, manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new designs. The DM74S09N operates within the 74S logic family standard, which defines its electrical characteristics and pin configuration. Identifying compatible substitutes requires matching core functional parameters: logic type, circuit count, input configuration, output characteristics, and package form factor.

Substiute Parts

DM74S09N

onsemiIn Stock: 4470DM74S09N Datasheet

Current PartRFQ

SN74S09N

Texas InstrumentsIn Stock: 2198SN74S09N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74S09N is determined by strict equivalence across the following parameters:

• Logic Function: AND gate with 4 channels, 2 inputs per channel
• Output Configuration: Open collector topology
• Supply Voltage Range: 4.75V ~ 5.25V
• Output Current Capability: 20mA maximum sink current
• Input Thresholds: Logic low 0.8V, logic high 2V
• Operating Temperature Range: 0°C ~ 70°C
• Package Form Factor: 14-DIP (0.300", 7.62mm) through-hole mounting
• Base Product Number: 74S09

The SN74S09N from Texas Instruments meets all substitution criteria within these parameters. Both parts share identical logic family designation (74S), functional configuration, and electrical specifications. Package compatibility is confirmed through matching DIP form factor and pin count.

Parameter Comparison

Engineering Selection Recommendations

SN74S09N (Texas Instruments) is the direct equivalent substitute for DM74S09N applications.

Selection basis:

• Functional Equivalence: Identical AND gate configuration with 4 channels and 2 inputs per channel
• Electrical Compatibility: All specified voltage, current, and logic level parameters match exactly
• Package Compatibility: Both use 14-DIP through-hole mounting with identical physical dimensions
• Product Status Advantage: SN74S09N is active production status, ensuring long-term availability compared to the obsolete DM74S09N
• Compliance Status: SN74S09N carries ROHS3 compliance certification, providing regulatory advantage for new designs
• Performance Data: SN74S09N includes specified propagation delay (9ns @ 5V, 50pF), enabling precise timing analysis

Pin-for-pin compatibility is confirmed through matching 14-pin DIP package configuration and identical logic family standards.

Frequently Asked Questions (FAQ)

Q: Can SN74S09N directly replace DM74S09N in existing designs?

A: Yes. Both parts are pin-for-pin compatible with identical electrical specifications, logic function, and package form factor. No circuit modifications are required.

Q: What is the primary reason to substitute DM74S09N?

A: DM74S09N is classified as obsolete. SN74S09N is in active production, ensuring component availability and supply chain continuity.

Q: Are there package differences between DM74S09N and SN74S09N?

A: Both use 14-DIP (0.300", 7.62mm) through-hole packages. Physical dimensions and pin spacing are identical, confirming board-level compatibility.

Q: Does SN74S09N meet modern compliance requirements?

A: SN74S09N is ROHS3 compliant, meeting current regulatory standards. DM74S09N is RoHS non-compliant, making SN74S09N preferable for new designs subject to environmental regulations.

Q: Are the electrical specifications identical?

A: Yes. Supply voltage (4.75V ~ 5.25V), output current (20mA), input logic levels (0.8V low, 2V high), and operating temperature range (0°C ~ 70°C) are identical across both parts.

Q: What is the propagation delay specification?

A: SN74S09N specifies 9ns maximum propagation delay at 5V supply with 50pF load. This parameter is not specified for DM74S09N but represents typical 74S logic family performance.