DM74AS573WM Equivalent & Substitute Parts

Part Overview

The DM74AS573WM is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring 1 channel with 8:8 circuit configuration and tri-state output capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The part operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SOIC surface mount package.

Substiute Parts

DM74AS573WM

onsemiIn Stock: 855DM74AS573WM Datasheet

Current PartRFQ

SN74AS573ADW

Texas InstrumentsIn Stock: 2283SN74AS573ADW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74AS573WM is determined by the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.5V ~ 5.5V
• Package / Case: 20-SOIC
• Mounting Type: Surface Mount
• Operating Temperature Range: 0°C ~ 70°C

The SN74AS573ADW from Texas Instruments satisfies all substitution criteria, maintaining identical functional specifications and package requirements while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS573ADW is a direct functional substitute for the DM74AS573WM. Both components share identical logic type, circuit configuration, output type, supply voltage range, package specification, and operating temperature range. The SN74AS573ADW offers the advantage of active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The propagation delay difference (3ns versus 6ns) and output current variations are within the acceptable tolerance range for standard D-Type Transparent Latch applications operating at 4.5V to 5.5V supply levels.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS573ADW replace the DM74AS573WM in existing designs?

A: Yes. Both components are D-Type Transparent Latch ICs with 8:8 circuit configuration, tri-state output, identical supply voltage range (4.5V ~ 5.5V), and 20-SOIC package specification. No PCB modifications are required.

Q: What are the differences between these two parts?

A: The primary differences are propagation delay (DM74AS573WM: 3ns, SN74AS573ADW: 6ns) and output current specifications (DM74AS573WM: 15mA high/48mA low, SN74AS573ADW: 2.6mA high/24mA low). The SN74AS573ADW carries active product status and ROHS3 compliance.

Q: Is the 20-SOIC package identical for both parts?

A: Yes. Both components use the 20-SOIC package with 0.295" width and 7.50mm width specification, ensuring mechanical and electrical compatibility on the same PCB footprint.

Q: What is the significance of the obsolete status for the DM74AS573WM?

A: Obsolete status indicates the DM74AS573WM is no longer manufactured by onsemi. The SN74AS573ADW, with active status, provides assured long-term availability and supply chain continuity.

Q: Are there compliance differences between these parts?

A: The SN74AS573ADW is ROHS3 compliant, while the DM74AS573WM compliance status is not specified. Both parts are REACH Unaffected and carry MSL 1 (Unlimited) moisture sensitivity rating.