DM74LS534N Equivalent & Substitute Parts

Part Overview

The DM74LS534N is a Logic category integrated circuit functioning as a Flip Flop with 1 Element D-Type configuration, 8-bit capacity, and positive edge triggering. This component is packaged in a 20-DIP (0.300", 7.62mm) through-hole format with tri-state, non-inverted output. The part is currently classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

DM74LS534N

onsemiIn Stock: 1009DM74LS534N Datasheet

Current PartRFQ

SN74ALS534AN

Texas InstrumentsIn Stock: 1936SN74ALS534AN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74LS534N is determined by the following critical parameters:

• Functional Type: D-Type Flip Flop with 1 Element, 8-bit configuration
• Trigger Mechanism: Positive Edge triggering
• Package Format: 20-DIP (0.300", 7.62mm) through-hole mounting
• Output Configuration: Tri-State capability
• Clock Frequency: 35 MHz minimum
• Supply Voltage Range: Compatibility within 4.75V ~ 5.25V nominal operation
• Output Current Specifications: 2.6mA (High), 24mA (Low)
• Operating Temperature Range: 0°C ~ 70°C

The SN74ALS534AN qualifies as a direct substitute based on matching functional architecture, package format, trigger type, bit configuration, and electrical operating parameters. The 74ALS series represents an advanced variant of the 74LS logic family with improved performance characteristics while maintaining backward compatibility in pinout and functional operation.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS534AN is the qualified substitute for the DM74LS534N based on the following engineering criteria:

Product Status: The DM74LS534N is classified as Obsolete, while the SN74ALS534AN maintains Active status. This distinction is critical for long-term supply chain reliability and component availability.

Compliance and Certifications: The SN74ALS534AN carries ROHS3 Compliant certification, meeting current environmental and regulatory standards. Both parts maintain REACH Unaffected status and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Electrical Compatibility: The SN74ALS534AN operates within a slightly wider supply voltage range (4.5V ~ 5.5V versus 4.75V ~ 5.25V), providing enhanced tolerance margins. All critical electrical parameters—clock frequency, output current specifications, and operating temperature range—are identical between the two parts.

Functional Equivalence: Both components share identical functional architecture as D-Type Flip Flops with 1 Element, 8-bit configuration, positive edge triggering, and tri-state output capability.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS534AN directly replace the DM74LS534N in existing designs?

A: Yes. Both parts share identical pinout, package format (20-DIP), functional configuration, and critical electrical parameters. The SN74ALS534AN operates within compatible voltage and temperature ranges and maintains the same output current specifications.

Q: What is the primary difference between the 74LS and 74ALS series?

A: The 74ALS series represents an advanced logic family variant with improved performance characteristics. In this case, the SN74ALS534AN provides a wider supply voltage operating range (4.5V ~ 5.5V) compared to the DM74LS534N (4.75V ~ 5.25V), while maintaining functional and electrical equivalence.

Q: Why is the DM74LS534N classified as Obsolete?

A: Obsolete status indicates the part is no longer manufactured or actively supported by the original manufacturer. The SN74ALS534AN, maintained in Active status by Texas Instruments, provides continuity for applications requiring this functional category.

Q: Are there any compliance differences between these parts?

A: The SN74ALS534AN carries ROHS3 Compliant certification, meeting current environmental standards. Both parts maintain identical REACH Unaffected status and export classification codes.

Q: What inventory considerations apply to these parts?

A: The DM74LS534N has 996 pieces available as new original stock. The SN74ALS534AN has 1900 pieces available, providing greater supply availability for new implementations or volume requirements.

Q: Does the output type differ between these parts?

A: The DM74LS534N features tri-state, non-inverted output. The SN74ALS534AN features tri-state, inverted output. This distinction must be evaluated against specific circuit requirements and signal polarity expectations in the target application.