DM74ALS563AWM Equivalent & Substitute Parts

Part Overview

The DM74ALS563AWM is a D-Type Transparent Latch IC with 1 channel, 8:8 configuration, and tri-state output, manufactured by onsemi in a 20-SOIC package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for logic-level applications requiring transparent latch functionality with tri-state output capability.

Substiute Parts

DM74ALS563AWM

onsemiIn Stock: 970DM74ALS563AWM Datasheet

Current PartRFQ

SN74ALS563BDW

Texas InstrumentsIn Stock: 869SN74ALS563BDW Datasheet

DirectRFQ

SN74ALS563BNSR

Texas InstrumentsIn Stock: 795SN74ALS563BNSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74ALS563AWM is determined by strict alignment of the following electrical and mechanical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.5V ~ 5.5V
• Independent Circuits: 1
• Operating Temperature Range: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Series: 74ALS
• Package Category: 20-SOIC

The identified substitute parts maintain these core parameters while differing in propagation delay specifications, packaging format (tube vs. tape & reel), and product status (active vs. obsolete). Both substitute parts are manufactured by Texas Instruments and carry active product status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both SN74ALS563BDW and SN74ALS563BNSR are active-status alternatives to the obsolete DM74ALS563AWM. Selection between these two Texas Instruments parts should be based on:

SN74ALS563BDW is suitable for applications where tube packaging is preferred for manual handling and smaller-volume assembly operations. This part maintains full electrical compatibility with the original design.

SN74ALS563BNSR is appropriate for high-volume automated assembly processes utilizing tape & reel packaging. This part also maintains full electrical compatibility and includes RoHS3 compliance certification.

Both substitute parts exhibit a propagation delay of 6ns compared to the original 3ns specification. This difference must be evaluated against circuit timing requirements. Both parts maintain identical supply voltage ranges, output current specifications, and operating temperature ranges as the original component.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS563BDW and SN74ALS563BNSR be used interchangeably with DM74ALS563AWM?

A: Both parts are electrically compatible with the DM74ALS563AWM, maintaining identical logic type, circuit configuration, output type, supply voltage, and operating temperature specifications. The primary differences are packaging format (tube vs. tape & reel) and propagation delay (6ns vs. 3ns). Propagation delay compatibility must be verified against circuit timing constraints.

Q: What is the significance of the propagation delay difference?

A: The DM74ALS563AWM specifies 3ns propagation delay, while both Texas Instruments substitutes specify 6ns. This 3ns difference may impact circuit timing in applications with tight timing margins. System-level timing analysis is required to determine if this specification change is acceptable for the intended application.

Q: Are there package compatibility considerations between the substitutes?

A: SN74ALS563BDW uses a 20-SOIC package with 0.295" (7.50mm) width, matching the original DM74ALS563AWM footprint. SN74ALS563BNSR uses a 20-SOIC package with 0.209" (5.30mm) width, which is a narrower variant. PCB layout and footprint compatibility must be verified before selection.

Q: What compliance certifications apply to the substitute parts?

A: Both SN74ALS563BDW and SN74ALS563BNSR carry RoHS3 compliance certification. Both parts are REACH Unaffected and classified under ECCN EAR99 with HTSUS code 8542.39.0001, matching the regulatory status of the original component.

Q: Why is the original DM74ALS563AWM classified as obsolete?

A: Obsolete status indicates that onsemi has discontinued manufacturing this part. Active alternatives from Texas Instruments ensure continued design support and procurement availability for applications requiring D-Type Transparent Latch functionality in the 74ALS series.