DM74LS175N Equivalent & Substitute Parts

Part Overview

The DM74LS175N 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, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The part operates within the 74LS series standard logic family and provides Master Reset functionality with complementary output configuration.

Substiute Parts

DM74LS175N

onsemiIn Stock: 1754DM74LS175N Datasheet

Current PartRFQ

SN74LS175N

Texas InstrumentsIn Stock: 13777SN74LS175N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74LS175N is determined by strict equivalence across the following parameters:

• Series classification: 74LS logic family
• Functional type: D-Type Flip Flop with 1 Element, 4 Bits per Element
• Trigger mechanism: Positive Edge
• Output configuration: Complementary
• Master Reset function: Present
• Package specification: 16-DIP (0.300", 7.62mm) through-hole
• Electrical supply range: 4.75V ~ 5.25V
• Output current ratings: 400µA (high), 8mA (low)
• Operating temperature range: 0°C ~ 70°C

The SN74LS175N from Texas Instruments meets all these criteria and qualifies as a direct functional equivalent. Both parts share identical pinout, electrical characteristics, and mechanical specifications within the defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS175N from Texas Instruments is the appropriate substitute for the obsolete DM74LS175N. The Texas Instruments variant maintains full electrical and mechanical compatibility while offering the advantage of Active product status, ensuring continued availability and supply chain reliability.

The SN74LS175N provides ROHS3 compliance, which addresses regulatory requirements for new designs and manufacturing environments subject to RoHS directives. The DM74LS175N's RoHS non-compliant status further supports transition to the SN74LS175N for applications requiring compliance documentation.

Both parts operate identically within the specified parameter ranges. The SN74LS175N's higher clock frequency specification (40 MHz versus 30 MHz) represents an operational enhancement that does not compromise backward compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS175N directly replace the DM74LS175N without circuit modification?

A: Yes. Both parts share identical pinout, package dimensions (16-DIP 0.300"), electrical supply requirements (4.75V ~ 5.25V), and output current specifications (400µA high, 8mA low). No circuit modifications are required for direct substitution.

Q: What is the primary reason for substituting the DM74LS175N?

A: The DM74LS175N is classified as Obsolete. The SN74LS175N maintains Active status, ensuring long-term availability and supply chain continuity.

Q: Are there packaging differences between these parts?

A: No. Both parts use identical 16-DIP (0.300", 7.62mm) through-hole packaging with the same mechanical specifications and pinout configuration.

Q: Does the SN74LS175N's higher clock frequency (40 MHz vs. 30 MHz) affect compatibility?

A: No. The higher clock frequency specification represents an operational enhancement. The SN74LS175N operates at or below the DM74LS175N's frequency range without functional degradation in existing designs.

Q: What compliance advantage does the SN74LS175N offer?

A: The SN74LS175N is ROHS3 compliant, whereas the DM74LS175N is RoHS non-compliant. This compliance status is relevant for new designs and manufacturing environments subject to RoHS directives.

Q: Are the electrical characteristics identical between both parts?

A: Yes. Both parts operate within the same voltage supply range (4.75V ~ 5.25V), provide identical output current ratings (400µA high, 8mA low), and maintain the same operating temperature range (0°C ~ 70°C).