DM74S175N Equivalent & Substitute Parts

Part Overview

The DM74S175N is a Logic category integrated circuit functioning as a Flip Flop 1 Element D-Type 4 Bit with Positive Edge triggering in a 16-DIP (0.300", 7.62mm) through-hole package. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates within the 74S series standard logic family and provides Master Reset functionality with complementary output configuration.

Substiute Parts

DM74S175N

onsemiIn Stock: 1170DM74S175N Datasheet

Current PartRFQ

SN74S175N

Texas InstrumentsIn Stock: 2172SN74S175N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74S175N is determined by strict equivalence across the following critical parameters:

• Logic Function: D-Type Flip Flop with 1 Element, 4 Bits per Element, Master Reset capability
• Output Configuration: Complementary output type
• Trigger Mechanism: Positive Edge triggering
• Electrical Specifications: Supply voltage range 4.75V ~ 5.25V, output current ratings 1mA (high) and 20mA (low)
• Package Format: 16-DIP (0.300", 7.62mm) through-hole configuration
• Series Compatibility: 74S logic family standard

The SN74S175N from Texas Instruments meets all substitution criteria. Both parts share identical functional architecture, electrical operating parameters, and physical packaging specifications. The substitute part maintains full pin-for-pin and functional compatibility with the original DM74S175N.

Parameter Comparison

Engineering Selection Recommendations

The SN74S175N from Texas Instruments is the direct functional equivalent for the obsolete DM74S175N. Selection of the Texas Instruments variant is supported by the following factors:

• Product Status: The SN74S175N maintains Active status, ensuring continued availability and manufacturing support, whereas the DM74S175N is Obsolete.
• Regulatory Compliance: The SN74S175N is ROHS3 Compliant, meeting current environmental and regulatory requirements for new designs and system updates.
• Electrical Performance: The SN74S175N demonstrates superior clock frequency capability (110 MHz versus 65 MHz), providing performance margin within the same electrical operating envelope.
• Functional Equivalence: Both parts maintain identical pin configuration, logic function, and electrical interface specifications, enabling direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the SN74S175N directly replace the DM74S175N in existing circuits?

A: Yes. The SN74S175N is pin-for-pin and functionally equivalent to the DM74S175N. Both parts share identical 16-DIP package configuration, supply voltage requirements (4.75V ~ 5.25V), output current specifications (1mA high, 20mA low), and D-Type Flip Flop logic architecture with Master Reset functionality. Direct substitution requires no circuit modifications.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (onsemi versus Texas Instruments), product status (Obsolete versus Active), and clock frequency specification (65 MHz versus 110 MHz). The SN74S175N offers higher maximum clock frequency while maintaining full backward compatibility with the DM74S175N electrical and functional specifications.

Q: Is the SN74S175N suitable for new designs?

A: Yes. The SN74S175N is classified as Active product status with ROHS3 compliance, making it appropriate for new design implementations. The higher clock frequency rating (110 MHz) provides additional performance margin compared to the original DM74S175N specification.

Q: Are there any package or mounting differences?

A: No. Both the DM74S175N and SN74S175N utilize identical 16-DIP (0.300", 7.62mm) through-hole packaging and mounting configuration. No PCB layout modifications are required for substitution.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of 0°C to 70°C (TA), ensuring consistent thermal performance characteristics in equivalent operating environments.