DM74ALS08MX Equivalent & Substitute Parts

Part Overview

The DM74ALS08MX is a 4-channel 2-input AND gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates within the 4.5V to 5.5V supply voltage range and is suitable for standard TTL logic applications requiring AND gate functionality.

Key Parameters

Parameter	Value
Logic Type	AND 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	14ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Series	74ALS
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the DM74ALS08MX is determined by strict equivalence across the following parameters:

Logic type: AND Gate with 4 circuits and 2 inputs per circuit
Electrical specifications: 4.5V ~ 5.5V supply voltage, 400µA/8mA output current, 14ns propagation delay at 5V with 50pF load
Input logic levels: 0.8V low threshold, 2V high threshold
Operating temperature range: 0°C ~ 70°C
Mounting type: Surface mount
Base product number: 74ALS08 series

The substitute parts listed below maintain identical electrical and functional characteristics. Package variations (14-SOIC vs. 14-SO) represent minor dimensional differences within the same footprint family and do not affect electrical compatibility.

Parameter Comparison

Parameter	DM74ALS08MX (onsemi)	SN74ALS08D (TI)	SN74ALS08DR (TI)	SN74ALS08NSR (TI)
Logic Type	AND Gate	AND Gate	AND Gate	AND 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	14ns @ 5V, 50pF	14ns @ 5V, 50pF	14ns @ 5V, 50pF	14ns @ 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
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.209", 5.30mm Width)
Product Status	Obsolete	Last Time Buy	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For new designs and production continuity, SN74ALS08DR (Texas Instruments) is the primary substitute. This part maintains active product status, carries ROHS3 compliance certification, and is available in standard 14-SOIC packaging with identical electrical specifications to the DM74ALS08MX.

SN74ALS08D (Texas Instruments) provides an alternative with Last Time Buy status and equivalent electrical performance, suitable for applications where packaging format (Tube) aligns with procurement requirements.

SN74ALS08NSR (Texas Instruments) offers active availability with ROHS3 compliance in Tape & Reel packaging. The package case dimension (0.209" width vs. 0.154") represents a minor variation within the 14-SO family and maintains electrical compatibility with the original part.

All three substitute parts are manufactured by Texas Instruments, carry REACH Unaffected status, and share identical ECCN and HTSUS classifications with the original DM74ALS08MX.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS08DR be used as a direct replacement for DM74ALS08MX?

A: Yes. Both parts are 4-channel 2-input AND gates with identical electrical specifications, operating voltage range (4.5V ~ 5.5V), propagation delay (14ns @ 5V, 50pF), and input/output logic levels. The 14-SOIC surface mount package is mechanically compatible.

Q: What is the difference between SN74ALS08D and SN74ALS08DR?

A: Both parts are electrically identical. The primary difference is packaging format: SN74ALS08D is supplied in Tube packaging, while SN74ALS08DR is supplied in Cut Tape (CT) & Digi-Reel format. Product status differs, with SN74ALS08D classified as Last Time Buy and SN74ALS08DR as Active.

Q: Why does SN74ALS08NSR have a different package width (0.209" vs. 0.154")?

A: SN74ALS08NSR uses 14-SO packaging (0.209" width) compared to the standard 14-SOIC (0.154" width). Both are surface mount packages with identical pin counts and electrical specifications. The dimensional difference may affect PCB layout considerations but does not impact electrical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SN74ALS08D, SN74ALS08DR, and SN74ALS08NSR all carry ROHS3 Compliant certification. The original DM74ALS08MX does not specify RoHS status.

Q: What is the MSL rating for substitute parts?

A: All substitute parts maintain MSL 1 (Unlimited) rating, identical to the original DM74ALS08MX, indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided PCB layout accommodates the package dimensions. SN74ALS08D and SN74ALS08DR use standard 14-SOIC (0.154" width) and are pin-for-pin compatible. SN74ALS08NSR uses 14-SO (0.209" width) and requires layout verification for footprint compatibility.

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