DM74LS574N Equivalent & Substitute Parts

Part Overview

The DM74LS574N is a Logic category 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. This component is classified as Obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The 74LS series architecture and electrical characteristics define the substitution parameters for this device.

Substiute Parts

DM74LS574N

onsemiIn Stock: 2314DM74LS574N Datasheet

Current PartRFQ

SN74ALS574BN

Texas InstrumentsIn Stock: 2122SN74ALS574BN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74LS574N is determined by strict equivalence across the following parameters:

• Functional Architecture: D-Type Flip Flop, 1 Element, 8 Bit configuration with Positive Edge triggering
• Output Characteristics: Tri-State, Non-Inverted output type
• Electrical Performance: Clock Frequency of 35 MHz, Output Current specifications (2.6mA High, 24mA Low)
• Package Compatibility: 20-DIP (0.300", 7.62mm) through-hole mounting
• Voltage Tolerance: Supply voltage range compatibility within specified operating conditions
• Operating Temperature Range: 0°C ~ 70°C (TA)

The SN74ALS574BN qualifies as a direct substitute based on identical functional specifications, package form factor, and electrical parameter alignment. The 74ALS series represents an advanced low-power Schottky variant of the 74LS logic family, maintaining full pin and functional compatibility while offering improved electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS574BN is a qualified substitute for the DM74LS574N based on functional and electrical equivalence. The substitute part maintains Active product status, ensuring long-term availability and supply chain continuity compared to the Obsolete main part. The SN74ALS574BN carries ROHS3 Compliant certification, providing enhanced environmental compliance for new designs and manufacturing processes. Both parts operate within compatible voltage and temperature ranges, with the substitute offering a marginally wider supply voltage tolerance (4.5V ~ 5.5V versus 4.75V ~ 5.25V). Pin configuration, package dimensions, and electrical performance metrics are identical, enabling direct replacement in existing circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS574BN directly replace the DM74LS574N in existing designs?

A: Yes. Both parts share identical pin configurations, package form factors (20-DIP), and functional specifications. The SN74ALS574BN operates as a direct pin-for-pin and functionally equivalent substitute.

Q: What are the key differences between the 74LS and 74ALS series?

A: The 74ALS series represents an advanced low-power Schottky variant offering improved electrical performance characteristics while maintaining full compatibility with 74LS logic family specifications. Both series operate at identical clock frequencies and output current levels for this device.

Q: Is the wider supply voltage range of the SN74ALS574BN (4.5V ~ 5.5V) a concern?

A: No. The wider tolerance range of the substitute part is compatible with applications designed for the main part's 4.75V ~ 5.25V specification. The substitute accommodates the original design envelope while providing additional margin.

Q: What is the significance of the Active product status for the SN74ALS574BN?

A: Active status indicates ongoing manufacturing and availability from the supplier. This ensures reliable procurement for replacement, repair, and new production applications, contrasting with the Obsolete status of the main part.

Q: Are there any compliance or certification differences between these parts?

A: The SN74ALS574BN carries ROHS3 Compliant certification, meeting current environmental and regulatory requirements. Both parts are REACH Unaffected and classified under identical ECCN and HTSUS codes.