DM74ALS576AWMX Equivalent & Substitute Parts

Part Overview

The DM74ALS576AWMX is a single-element D-type flip-flop logic integrated circuit with 8-bit parallel output capability, manufactured by onsemi in a 20-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates at 30 MHz clock frequency with tri-state inverted outputs and is designed for standard logic applications requiring positive edge triggering.

Substiute Parts

DM74ALS576AWMX

onsemiIn Stock: 1750DM74ALS576AWMX Datasheet

Current PartRFQ

SN74ALS576BDW

Texas InstrumentsIn Stock: 1122SN74ALS576BDW Datasheet

DirectRFQ

SN74ALS576BDWR

Texas InstrumentsIn Stock: 3692SN74ALS576BDWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS576AWMX are qualified based on strict electrical and mechanical parameter matching within the 74ALS logic family. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Type: D-Type flip-flop with single element, 8-bit configuration
• Output Type: Tri-state, inverted outputs
• Clock Frequency: 30 MHz minimum
• Max Propagation Delay: 14 ns @ 5V, 50pF
• Trigger Type: Positive edge
• Voltage Supply Range: 4.5V ~ 5.5V
• Current Ratings: Output high 2.6 mA, output low 24 mA; quiescent current 18 mA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface mount

All identified substitute parts maintain identical electrical specifications and package dimensions, ensuring direct functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS576BDWR (Texas Instruments) - Recommended Primary Substitute

The SN74ALS576BDWR is the preferred substitute for the obsolete DM74ALS576AWMX. This part carries Active product status, ensuring long-term availability and manufacturing support. It is ROHS3 compliant and supplied in Tape & Reel packaging with 3640 units currently in stock. All electrical and mechanical parameters are identical to the original part, providing direct functional compatibility without design modification.

SN74ALS576BDW (Texas Instruments) - Secondary Substitute

The SN74ALS576BDW is an alternative substitute with Last Time Buy status. It maintains identical electrical specifications and 20-SOIC package configuration. This part is supplied in Tube packaging and has 1109 units in stock. While functionally equivalent, its Last Time Buy status indicates limited future availability compared to the Active status of the BDWR variant.

Both Texas Instruments substitutes are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory profile of the original onsemi component.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS576BDW and SN74ALS576BDWR be used interchangeably with DM74ALS576AWMX?

A: Yes. Both Texas Instruments parts are direct functional and mechanical equivalents. All critical electrical parameters—clock frequency, propagation delay, output current ratings, supply voltage range, and operating temperature—are identical. The 20-SOIC package dimensions are the same, enabling direct PCB footprint compatibility.

Q: What is the difference between SN74ALS576BDW and SN74ALS576BDWR?

A: The primary difference is packaging format and product status. SN74ALS576BDW is supplied in Tube packaging with Last Time Buy status. SN74ALS576BDWR is supplied in Tape & Reel (TR) packaging with Active product status. Electrically and functionally, they are identical. For new designs or long-term production, SN74ALS576BDWR is preferred due to its Active status and higher inventory availability.

Q: Are there any compliance or regulatory differences between the original and substitute parts?

A: Both substitute parts are ROHS3 compliant and REACH unaffected, consistent with the original DM74ALS576AWMX. Moisture sensitivity level (MSL) is 1 (Unlimited) for all parts. ECCN and HTSUS classifications are identical across all three parts.

Q: What is the significance of the obsolete status of the original part?

A: The DM74ALS576AWMX is classified as obsolete, meaning onsemi has discontinued manufacturing. This necessitates the use of equivalent substitute parts for ongoing production and support. The Texas Instruments alternatives ensure design continuity and component availability.

Q: Can the substitute parts be soldered directly to existing PCBs designed for DM74ALS576AWMX?

A: Yes. The 20-SOIC package dimensions (0.295", 7.50mm width) are identical, and all pin configurations match. No PCB redesign is required for substitution.