DM74ALS08N_F40 Equivalent & Substitute Parts

Part Overview

The DM74ALS08N_F40 is a 4-channel AND gate logic IC manufactured by onsemi in a 14-MDIP package. This component implements four independent 2-input AND gates in a single integrated circuit, operating within the 4.5V to 5.5V supply voltage range. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

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	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Series	74ALS
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the DM74ALS08N_F40 is determined by strict equivalence across the following critical parameters:

Logic Type: AND Gate (4 channels, 2 inputs per channel)
Voltage Supply Range: 4.5V ~ 5.5V
Current Output Specifications: 400µA (high), 8mA (low)
Input Logic Levels: 0.8V (low), 2V (high)
Propagation Delay: 14ns @ 5V, 50pF
Operating Temperature Range: 0°C ~ 70°C
Mounting Type: Through Hole
Package Footprint: 14-DIP (0.300", 7.62mm)
Base Product Series: 74ALS

The substitute parts SN74ALS08N and SN74ALS08NE4, both manufactured by Texas Instruments, meet all parametric requirements for direct functional replacement. Both parts maintain identical logic functionality, electrical performance, and physical package compatibility with the original DM74ALS08N_F40.

Parameter Comparison

Parameter	DM74ALS08N_F40	SN74ALS08N	SN74ALS08NE4
Manufacturer	onsemi	Texas Instruments	Texas Instruments
Logic Type	AND Gate	AND Gate	AND Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	400µA, 8mA	400µA, 8mA	400µA, 8mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	14ns @ 5V, 50pF	14ns @ 5V, 50pF	14ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Series	74ALS	74ALS	74ALS
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both SN74ALS08N and SN74ALS08NE4 are qualified substitutes for the obsolete DM74ALS08N_F40 based on complete parametric equivalence and identical package footprint compatibility.

SN74ALS08N is recommended as the primary substitute. This part is manufactured by Texas Instruments, carries active product status, and maintains full compliance with ROHS3 and REACH regulations. The part is available in tube packaging with substantial inventory levels.

SN74ALS08NE4 serves as a secondary substitute option, also manufactured by Texas Instruments with active product status and identical ROHS3 and REACH compliance. This variant includes specified quiescent current rating (4 mA maximum) and is available in tube packaging.

Both substitutes are pin-compatible, functionally equivalent, and suitable for direct replacement in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS08N and SN74ALS08NE4 be used interchangeably with DM74ALS08N_F40?

A: Yes. Both parts are parametric equivalents with identical logic functionality, electrical performance, and 14-DIP package footprint. Direct substitution is supported without circuit redesign.

Q: What is the difference between SN74ALS08N and SN74ALS08NE4?

A: Both parts are functionally identical AND gate ICs with matching electrical specifications. SN74ALS08NE4 includes a specified maximum quiescent current rating of 4 mA. Both are suitable for the same applications.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both SN74ALS08N and SN74ALS08NE4 are ROHS3 compliant. The original DM74ALS08N_F40 RoHS status was not specified in available documentation.

Q: Is the 14-DIP package footprint identical across all three parts?

A: Yes. All three parts use the 14-DIP (0.300", 7.62mm) package with identical pin configuration and mechanical dimensions, enabling direct board-level substitution.

Q: Why is the original DM74ALS08N_F40 classified as obsolete?

A: The DM74ALS08N_F40 is no longer in active production by onsemi. Texas Instruments SN74ALS08N and SN74ALS08NE4 remain in active production and are the recommended long-term alternatives.

Q: What is the operating temperature range for these parts?

A: All three parts operate within the 0°C to 70°C temperature range, suitable for commercial and industrial applications within this specification.

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