DM74AS04M Equivalent & Substitute Parts

Part Overview

The DM74AS04M is a 6-channel inverter logic IC manufactured by onsemi in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The DM74AS04M operates within the 74AS logic family standard, which defines specific electrical and mechanical parameters that determine valid substitutes.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	2mA, 20mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Base Product Number	74AS04
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Valid substitutes for the DM74AS04M must maintain identical electrical performance across all specified parameters: logic type (inverter), circuit count (6 channels), input count (1 per channel), supply voltage range (4.5V ~ 5.5V), output current specifications (2mA high, 20mA low), input logic thresholds (0.8V low, 2V high), propagation delay (5ns @ 5V, 50pF), and operating temperature range (0°C ~ 70°C). All substitute parts must be members of the 74AS logic family and maintain surface mount configuration with MSL rating of 1 or better.

Substitutes are categorized by packaging and product status:

Direct substitutes share identical package specifications (14-SOIC, 0.154" width)
Similar substitutes maintain electrical equivalence with package dimension variations (14-SO, 0.209" width)
Parametric equivalents meet all electrical specifications with different packaging formats

Parameter Comparison

Parameter	DM74AS04M (onsemi)	SN74AS04DR (TI)	SN74AS04NSR (TI)	SN74AS04D (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Last Time Buy
Logic Type	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6
Number of Inputs	1	1	1	1
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	2mA, 20mA	2mA, 20mA	2mA, 20mA	2mA, 20mA
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	5ns @ 5V, 50pF	5ns @ 5V, 50pF	5ns @ 5V, 50pF	5ns @ 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
Supplier Device Package	14-SOIC	14-SOIC	14-SO	14-SOIC
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.209", 5.30mm Width)	14-SOIC (0.154", 3.90mm Width)
Packaging Format	-	Tape & Reel (TR)	Tape & Reel (TR)	Tube
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

SN74AS04DR (Texas Instruments) is the primary substitute for DM74AS04M. This part maintains identical electrical specifications and package dimensions (14-SOIC, 0.154" width) while offering active product status and ROHS3 compliance. Tape & Reel packaging supports high-volume production environments.

SN74AS04D (Texas Instruments) provides parametric equivalence with identical electrical performance and package dimensions. This part carries Last Time Buy status, indicating limited future availability. Selection of this substitute should account for long-term supply constraints.

SN74AS04NSR (Texas Instruments) offers electrical equivalence with a package dimension variation (14-SO, 0.209" width). The wider package footprint requires PCB layout verification to confirm mechanical compatibility with existing designs. This part maintains active status and ROHS3 compliance.

All three substitutes are members of the 74AS logic family and meet the electrical requirements of the DM74AS04M. Selection should prioritize SN74AS04DR for new designs and ongoing production due to active status and standard packaging format.

Frequently Asked Questions (FAQ)

Q: Can SN74AS04NSR be used as a direct replacement for DM74AS04M on existing PCBs?

A: SN74AS04NSR maintains electrical equivalence but differs in package width (0.209" versus 0.154"). PCB layout compatibility must be verified before substitution. The wider package may not fit existing footprints designed for the narrower 14-SOIC standard.

Q: What is the difference between the three Texas Instruments substitutes?

A: SN74AS04DR and SN74AS04D share identical electrical specifications and package dimensions (14-SOIC, 0.154" width). SN74AS04DR is supplied in Tape & Reel format for automated assembly, while SN74AS04D is supplied in Tube format. SN74AS04DR maintains active product status; SN74AS04D is Last Time Buy. SN74AS04NSR uses a wider 14-SO package (0.209" width) and requires layout verification.

Q: Are all substitutes RoHS compliant?

A: SN74AS04DR, SN74AS04NSR, and SN74AS04D are all ROHS3 compliant. The original DM74AS04M does not specify RoHS status. All parts maintain REACH Unaffected status.

Q: What is the MSL rating for these parts?

A: All parts, including DM74AS04M and the three Texas Instruments substitutes, carry MSL rating 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Q: Which substitute should be selected for new designs?

A: SN74AS04DR is recommended for new designs. This part maintains active product status, standard 14-SOIC packaging (0.154" width), Tape & Reel format for production efficiency, and ROHS3 compliance.

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