DM74AS04SJ Equivalent & Substitute Parts

Part Overview

The DM74AS04SJ is a 6-channel inverter logic IC manufactured by onsemi in a 14-SOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates within the 74AS logic family standard, with electrical characteristics suitable for TTL-compatible applications requiring signal inversion across multiple channels.

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
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Series	74AS

Substitute Part Grouping Explanation

Substitute parts for the DM74AS04SJ are qualified based on strict electrical and mechanical parameter matching within the 74AS logic family. All substitute candidates maintain identical functional specifications: 6-channel inverter configuration, single input per channel, TTL-compatible logic levels, and identical propagation delay characteristics. Substitution validity is determined by equivalence in the following parameters:

Logic Type: Inverter (6 channels, 1 input)
Voltage Supply Range: 4.5V ~ 5.5V
Output Current Ratings: 2mA (high), 20mA (low)
Input Logic Thresholds: 0.8V (low), 2V (high)
Propagation Delay: 5ns @ 5V, 50pF load
Operating Temperature Range: 0°C ~ 70°C
Mounting Type: Surface Mount
MSL Rating: 1 (Unlimited)

All listed substitutes meet these criteria and are qualified for direct functional replacement.

Parameter Comparison

Parameter	DM74AS04SJ (onsemi)	SN74AS04NSR (TI)	SN74AS04D (TI)	SN74AS04DR (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
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
Product Status	Obsolete	Active	Last Time Buy	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For applications currently using the DM74AS04SJ, the following selection criteria apply:

SN74AS04NSR (Texas Instruments) is the primary substitute option. This part carries Active product status, ensuring long-term availability and supply chain stability. It is ROHS3 compliant and packaged in Tape & Reel format, suitable for automated assembly processes. All electrical and thermal specifications are identical to the original part.

SN74AS04DR (Texas Instruments) is an alternative substitute with Active product status and identical electrical specifications. This variant is also ROHS3 compliant and packaged in Tape & Reel format. Selection between SN74AS04NSR and SN74AS04DR depends on packaging format requirements and supplier availability.

SN74AS04D (Texas Instruments) is available but carries Last Time Buy status, indicating limited future availability. This part is ROHS3 compliant and packaged in Tube format. Use of this variant is not recommended for new designs or long-term production commitments.

All three substitutes maintain full electrical and functional equivalence with the original DM74AS04SJ and are suitable for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can SN74AS04NSR, SN74AS04D, and SN74AS04DR be used interchangeably with DM74AS04SJ?

A: Yes. All three parts are functionally equivalent inverter ICs with identical logic specifications, electrical characteristics, and operating parameters. They differ only in manufacturer (Texas Instruments vs. onsemi), product status, and packaging format (Tape & Reel vs. Tube).

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

A: The primary differences are product status and packaging format. SN74AS04NSR and SN74AS04DR are both Active products supplied in Tape & Reel format. SN74AS04D is Last Time Buy status and supplied in Tube format. All three have identical electrical specifications and are ROHS3 compliant.

Q: Are there package compatibility concerns?

A: The DM74AS04SJ uses a 14-SOP package (5.30mm width). SN74AS04NSR uses a 14-SO package (5.30mm width), while SN74AS04D and SN74AS04DR use 14-SOIC packages (3.90mm width). Verify PCB footprint compatibility before substitution. The narrower SOIC packages may require layout verification.

Q: Why is the DM74AS04SJ obsolete?

A: The part is classified as obsolete by the manufacturer. Active substitutes from Texas Instruments are available with identical specifications and superior long-term availability.

Q: Which substitute should be selected for new designs?

A: SN74AS04NSR or SN74AS04DR are recommended for new designs due to Active product status and assured long-term supply. Both are ROHS3 compliant and suitable for automated assembly.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All three Texas Instruments substitutes (SN74AS04NSR, SN74AS04D, SN74AS04DR) are ROHS3 compliant. The original DM74AS04SJ RoHS status is not specified in the provided data.

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