DM74ALS573BN Equivalent & Substitute Parts

Part Overview

The DM74ALS573BN is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates within the 74ALS logic family standard, which defines its electrical and mechanical compatibility parameters.

Substiute Parts

DM74ALS573BN

onsemiIn Stock: 1729DM74ALS573BN Datasheet

Current PartRFQ

SN74ALS573CN

Texas InstrumentsIn Stock: 2299SN74ALS573CN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS573BN is determined by strict equivalence across the following critical parameters:

• Logic Family & Type: Both parts must belong to the 74ALS series and implement D-Type Transparent Latch functionality
• Circuit Configuration: 8:8 input-output ratio must be maintained
• Output Characteristics: Tri-state output capability is mandatory
• Electrical Specifications: Supply voltage (4.5V ~ 5.5V), propagation delay (2ns), and output current ratings (2.6mA / 24mA) must match exactly
• Operating Temperature: 0°C ~ 70°C range must be supported
• Package & Mounting: 20-DIP through-hole package with 0.300" (7.62mm) pitch is required for mechanical compatibility

The SN74ALS573CN from Texas Instruments meets all substitution criteria and is classified as an active product, providing long-term availability assurance.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS573CN is the direct functional equivalent for the obsolete DM74ALS573BN. Selection of the Texas Instruments part is supported by:

• Product Status: Active manufacturing status ensures continued availability and supply chain reliability
• Regulatory Compliance: RoHS3 compliance satisfies current environmental and regulatory requirements
• Electrical Equivalence: All critical electrical parameters match the original specification exactly
• Package Compatibility: Identical 20-DIP through-hole package enables direct board-level substitution without layout modification
• Regulatory Alignment: Both parts maintain REACH Unaffected status

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS573CN be used as a direct replacement for the DM74ALS573BN?

A: Yes. Both parts implement identical D-Type Transparent Latch functionality with 8:8 configuration, tri-state output, matching electrical specifications (4.5V ~ 5.5V supply, 2ns propagation delay, 2.6mA / 24mA output current), and identical 20-DIP through-hole packaging. No circuit modification is required.

Q: What is the primary advantage of switching to the SN74ALS573CN?

A: The SN74ALS573CN is an active product with assured long-term availability, whereas the DM74ALS573BN is obsolete. The Texas Instruments part also carries RoHS3 compliance certification.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 20-DIP (0.300", 7.62mm) through-hole package with identical pinout and mechanical dimensions.

Q: Do these parts have the same operating temperature range?

A: Yes. Both parts operate across the 0°C ~ 70°C temperature range.

Q: Is the SN74ALS573CN suitable for new designs?

A: Yes. The active product status and RoHS3 compliance make the SN74ALS573CN appropriate for new design implementations and long-term production requirements.