DM74ALS574AN Equivalent & Substitute Parts

Part Overview

The DM74ALS574AN is a logic integrated circuit functioning as a Flip Flop 1 Element D-Type 8 Bit with positive edge triggering in a 20-DIP (0.300", 7.62mm) through-hole package. Manufactured by onsemi, this component is classified as obsolete. Due to its obsolete product status and limited availability from the original manufacturer, identifying equivalent substitute parts from active manufacturers ensures design continuity and supply chain reliability for applications requiring 74ALS series D-type flip-flop functionality.

Substiute Parts

DM74ALS574AN

onsemiIn Stock: 801DM74ALS574AN Datasheet

Current PartRFQ

SN74ALS574BN

Texas InstrumentsIn Stock: 2122SN74ALS574BN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS574AN is determined by strict equivalence across the following critical parameters:

• Logic Series & Function: 74ALS series D-type flip-flop with identical 1 element, 8-bit configuration
• Output Characteristics: Tri-state, non-inverted output configuration
• Electrical Performance: Clock frequency of 35 MHz, propagation delay of 14ns @ 5V/50pF, supply voltage range 4.5V–5.5V, quiescent current of 18 mA
• Trigger Mechanism: Positive edge triggering
• Package Specification: 20-DIP (0.300", 7.62mm) through-hole mounting
• Output Drive Capability: 2.6mA high, 24mA low

The substitute part SN74ALS574BN meets all these criteria and maintains full functional and electrical compatibility with the original DM74ALS574AN.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS574BN from Texas Instruments is the direct equivalent substitute for the DM74ALS574AN. Selection of this substitute is supported by:

• Functional Equivalence: Identical logic function, bit width, and output configuration across all specified electrical parameters
• Active Product Status: The SN74ALS574BN maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Compliance & Certification: The SN74ALS574BN is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements
• Package Compatibility: Both parts utilize the same 20-DIP (0.300", 7.62mm) through-hole package, enabling direct board-level substitution without layout modification
• Electrical Performance: All timing, current, and voltage specifications are identical, guaranteeing drop-in replacement capability

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS574BN be used as a direct replacement for the DM74ALS574AN in existing designs?

A: Yes. The SN74ALS574BN is a direct equivalent. All electrical parameters, timing specifications, output characteristics, and package dimensions are identical. No circuit modifications are required.

Q: Are there any differences in pin configuration between these parts?

A: No. Both the DM74ALS574AN and SN74ALS574BN use the 20-DIP (0.300", 7.62mm) through-hole package with identical pinout. Pin-for-pin compatibility is guaranteed.

Q: Why is the DM74ALS574AN listed as obsolete?

A: The DM74ALS574AN has reached end-of-life status with onsemi. The SN74ALS574BN from Texas Instruments remains in active production, providing a reliable long-term alternative for new designs and legacy system maintenance.

Q: What is the difference between the tube packaging of the SN74ALS574BN and the original packaging?

A: Tube packaging is a standard industry format for component distribution and does not affect the electrical or functional characteristics of the part. The component itself remains identical.

Q: Are there any compliance or regulatory differences between the two parts?

A: The SN74ALS574BN is RoHS3 compliant and REACH unaffected. Both parts carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring regulatory compatibility.

Q: What inventory availability should be expected?

A: The SN74ALS574BN has significantly higher inventory availability (2100 Pcs) compared to the obsolete DM74ALS574AN (714 Pcs), providing better supply security for production requirements.