DM74ALS02SJ Equivalent & Substitute Parts

Part Overview

The DM74ALS02SJ is a NOR Gate IC featuring 4 channels with 2 inputs per channel in a 14-SOP surface mount package, manufactured by onsemi. This logic component operates within the 74ALS series and is designed for digital logic applications requiring NOR gate functionality. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	400µA, 8mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	12ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Series	74ALS
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS02SJ are identified based on strict electrical and mechanical compatibility criteria. All substitute candidates must maintain identical functional specifications across the following parameters:

Logic Type: NOR Gate
Number of Circuits: 4 channels
Number of Inputs: 2 inputs per channel
Voltage Supply Range: 4.5V ~ 5.5V
Output Current Specifications: 400µA (high), 8mA (low)
Input Logic Levels: 0.8V (low), 2V (high)
Propagation Delay: 12ns @ 5V, 50pF
Operating Temperature Range: 0°C ~ 70°C
Series Classification: 74ALS
Mounting Type: Surface Mount
MSL Rating: 1 (Unlimited)

Substitute parts are grouped by packaging configuration and product status. Packaging differences (14-SOP vs. 14-SOIC) represent mechanical variations that do not affect electrical functionality when footprint compatibility is confirmed in the target application.

Parameter Comparison

Parameter	DM74ALS02SJ (Main)	SN74ALS02ANSR	SN74ALS02AD	SN74ALS02ADR
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	NOR Gate	NOR Gate	NOR Gate	NOR Gate
Number of Circuits	4	4	4	4
Number of Inputs	2	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	400µA, 8mA	400µA, 8mA	400µA, 8mA	400µA, 8mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V
Max Propagation Delay @ V, Max CL	12ns @ 5V, 50pF	12ns @ 5V, 50pF	12ns @ 5V, 50pF	12ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Series	74ALS	74ALS	74ALS	74ALS
Package / Case	14-SOIC (0.209", 5.30mm Width)	14-SOIC (0.209", 5.30mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Last Time Buy	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three Texas Instruments substitute parts (SN74ALS02ANSR, SN74ALS02AD, SN74ALS02ADR) meet the complete electrical specification requirements of the DM74ALS02SJ. Selection among these alternatives should be based on the following criteria:

SN74ALS02ANSR is classified as Active product status with ROHS3 compliance and is supplied in Tape & Reel packaging. This part offers the longest product lifecycle support and is suitable for new designs and high-volume production environments.

SN74ALS02ADR is also classified as Active product status with ROHS3 compliance and is supplied in Tape & Reel packaging. This part provides equivalent lifecycle support to SN74ALS02ANSR and represents an alternative sourcing option.

SN74ALS02AD is classified as Last Time Buy status with ROHS3 compliance and is supplied in Tube packaging. This part has a defined end-of-life timeline and should be selected only when existing inventory requirements or legacy system support necessitate its use.

Package configuration differences exist between the main part (14-SOIC 0.209" width) and two substitute options (14-SOIC 0.154" width). PCB footprint compatibility must be confirmed before implementation.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS02ANSR, SN74ALS02AD, and SN74ALS02ADR be used interchangeably with DM74ALS02SJ?

A: All three parts are electrically equivalent and functionally interchangeable. They maintain identical logic specifications, voltage supply ranges, output current ratings, input logic levels, and propagation delay characteristics. Mechanical compatibility depends on PCB footprint design and package width specifications.

Q: What is the difference between the 14-SOIC packages listed?

A: The main part DM74ALS02SJ uses a 14-SOIC package with 0.209" width (5.30mm). Two substitute parts (SN74ALS02AD and SN74ALS02ADR) use a 14-SOIC package with 0.154" width (3.90mm). Both are 14-pin SOIC configurations but differ in body width. PCB footprint compatibility must be verified for your specific application.

Q: Which substitute part should be selected for new designs?

A: SN74ALS02ANSR or SN74ALS02ADR are recommended for new designs due to their Active product status, ensuring long-term availability and manufacturing support. Both parts are ROHS3 compliant and supplied in Tape & Reel format suitable for automated assembly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all three Texas Instruments substitute parts (SN74ALS02ANSR, SN74ALS02AD, SN74ALS02ADR) are ROHS3 compliant. The original DM74ALS02SJ RoHS status is not specified in the available data.

Q: What is the significance of the Last Time Buy status for SN74ALS02AD?

A: Last Time Buy status indicates that Texas Instruments has announced a defined end-of-life date for this part. Existing inventory is available, but future production is not guaranteed. This part should be selected only for legacy system support or when existing stock meets project requirements.

Q: Do all parts share the same MSL rating?

A: Yes, all parts including the main DM74ALS02SJ and all three substitute options carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.

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