DM74ALS1005N Equivalent & Substitute Parts

Part Overview

The DM74ALS1005N is a 6-channel inverter logic IC with open collector outputs in a 14-pin DIP package, manufactured by onsemi. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates within the 4.5V to 5.5V supply voltage range and is suitable for through-hole mounting applications requiring inverter functionality with open collector configuration.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Open Collector
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	-, 24mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	30ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Series	74ALS

Substitute Part Grouping Explanation

Substitution for the DM74ALS1005N is determined by strict equivalence in the following parameters: logic type (inverter), number of circuits (6), number of inputs (1), open collector feature, supply voltage range (4.5V ~ 5.5V), input logic levels (0.8V low, 2V high), and operating temperature range (0°C ~ 70°C).

The substitute parts are grouped into two categories:

Direct Equivalent (Package-Compatible): SN74ALS1005N maintains identical electrical specifications and through-hole 14-DIP packaging, providing pin-for-pin compatibility.

Functional Equivalent with Package Variation: SN74ALS1005D offers identical electrical performance but in surface-mount 14-SOIC packaging, suitable for designs transitioning to SMT assembly.

Partial Functional Equivalent: SN74ALS05AN shares the same logic family and inverter configuration but with reduced output current (8mA vs. 24mA) and increased propagation delay (54ns vs. 30ns), making it suitable only for applications with lower current requirements.

Parameter Comparison

Parameter	DM74ALS1005N (onsemi)	SN74ALS1005N (TI)	SN74ALS1005D (TI)	SN74ALS05AN (TI)
Logic Type	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6
Number of Inputs	1	1	1	1
Features	Open Collector	Open Collector	Open Collector	Open Collector
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	-, 24mA	-, 24mA	-, 24mA	-, 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	30ns @ 5V, 50pF	30ns @ 5V, 50pF	30ns @ 5V, 50pF	54ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Through Hole	Through Hole	Surface Mount	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-SOIC (0.154", 3.90mm Width)	14-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Last Time Buy	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN74ALS1005N (Texas Instruments) is the primary recommended substitute. It maintains full electrical and mechanical compatibility with the DM74ALS1005N, operates as an active product with ROHS3 compliance, and is available in production quantities. This part provides direct replacement capability without design modification.

SN74ALS1005D (Texas Instruments) is suitable for designs undergoing surface-mount technology transition. It provides identical electrical performance to the DM74ALS1005N but requires PCB layout and assembly process changes. Note that this part is classified as Last Time Buy, indicating limited future availability.

SN74ALS05AN (Texas Instruments) is applicable only in applications where output current requirements do not exceed 8mA and propagation delay tolerance extends to 54ns. This part is not suitable as a direct replacement in designs requiring the full 24mA output current or 30ns timing specifications of the original DM74ALS1005N.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS1005N be used as a direct replacement for DM74ALS1005N?

A: Yes. The SN74ALS1005N is electrically and mechanically equivalent, with identical pin configuration, voltage specifications, output current ratings, and propagation delay characteristics. No design changes are required.

Q: What is the difference between SN74ALS1005N and SN74ALS1005D?

A: Both parts are electrically identical. The primary difference is packaging: SN74ALS1005N uses through-hole 14-DIP mounting, while SN74ALS1005D uses surface-mount 14-SOIC packaging. Selection depends on PCB assembly technology and design requirements.

Q: Is SN74ALS05AN a suitable replacement for DM74ALS1005N?

A: SN74ALS05AN is not a direct replacement. While it shares the same logic family and inverter configuration, it has reduced output current (8mA versus 24mA) and increased propagation delay (54ns versus 30ns). Use only if your application specifications permit these reduced performance parameters.

Q: What compliance certifications apply to the substitute parts?

A: SN74ALS1005N and SN74ALS1005D are ROHS3 compliant. All substitute parts maintain REACH Unaffected status and EAR99 export classification, matching the original DM74ALS1005N regulatory profile.

Q: Why is the DM74ALS1005N obsolete?

A: The DM74ALS1005N is classified as obsolete by onsemi. Active alternatives from Texas Instruments (SN74ALS1005N and SN74ALS05AN) provide equivalent or compatible functionality and are recommended for new designs and ongoing procurement.

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