DM74ALS533WMX Equivalent & Substitute Parts

Part Overview

The DM74ALS533WMX is a D-Type Transparent Latch IC with 8:8 multiplexing capability, manufactured by onsemi in a 20-SOIC surface mount package. This component features tri-state output configuration and operates within the 4.5V to 5.5V supply voltage range, making it suitable for digital logic applications requiring transparent latch functionality.

The DM74ALS533WMX is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this logic IC.

Substiute Parts

DM74ALS533WMX

onsemiIn Stock: 732DM74ALS533WMX Datasheet

Current PartRFQ

SN74ALS533ADW

Texas InstrumentsIn Stock: 2012SN74ALS533ADW Datasheet

DirectRFQ

SN74ALS533ANSR

Texas InstrumentsIn Stock: 933SN74ALS533ANSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74ALS533WMX 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
• Independent Circuits: 1
• Operating Temperature Range: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package Category: 20-SOIC

Substitute parts must maintain identical or compatible values across all these parameters. Variations in propagation delay time, output current specifications, and package width dimensions are permissible within the constraints of the application's electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS533ADW (Texas Instruments) is the primary direct substitute for the DM74ALS533WMX. Both parts share identical package dimensions (20-SOIC 0.295" width), electrical specifications, and functional characteristics. The SN74ALS533ADW maintains active product status and ROHS3 compliance, supporting long-term availability and regulatory requirements.

SN74ALS533ANSR (Texas Instruments) is a functionally equivalent alternative with a narrower package body (0.209" width). This variant is suitable for applications where PCB layout constraints permit the reduced package width. The SN74ALS533ANSR also maintains active status and ROHS3 compliance.

Both Texas Instruments substitutes demonstrate superior propagation delay performance (6ns versus 4ns), which represents a conservative design margin for timing-sensitive applications. Component selection should be based on packaging requirements and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS533ADW directly replace the DM74ALS533WMX without PCB modifications?

A: Yes. The SN74ALS533ADW maintains identical package dimensions (20-SOIC 0.295" width), pin configuration, and electrical specifications. Direct substitution on existing PCBs is feasible without layout changes.

Q: What is the difference between SN74ALS533ADW and SN74ALS533ANSR?

A: Both parts are functionally equivalent D-Type Transparent Latch ICs with 8:8 configuration. The primary difference is package width: SN74ALS533ADW uses 0.295" width, while SN74ALS533ANSR uses 0.209" width. Packaging format also differs (Tube versus Tape & Reel). Electrical performance is identical.

Q: Is the propagation delay difference (4ns versus 6ns) significant for substitution?

A: The 2ns increase in propagation delay for Texas Instruments parts represents a conservative specification change. Applications designed for the original 4ns specification will function correctly with the 6ns substitute, as timing margins typically accommodate this variance.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both SN74ALS533ADW and SN74ALS533ANSR are ROHS3 compliant. The original DM74ALS533WMX RoHS status is not specified in available documentation.

Q: Which substitute should be selected for new designs?

A: For new designs, either Texas Instruments substitute is acceptable. SN74ALS533ADW is recommended for direct replacement scenarios. SN74ALS533ANSR is suitable when package width optimization is a design consideration.