74AC04SJX Equivalent & Substitute Parts

Part Overview

The 74AC04SJX is a 6-channel inverter logic IC manufactured by onsemi in a 14-SOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74AC04 series provides standard inverter functionality across multiple package and manufacturer options, with active alternatives available from both onsemi and Texas Instruments.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.9V ~ 1.65V
Input Logic Level - High	2.1V ~ 3.85V
Max Propagation Delay @ 5V, 50pF	7ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Base Product Number	74AC04
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74AC04SJX is determined by matching the following core parameters: logic type (inverter), circuit count (6 channels), input count (1), supply voltage range (2V ~ 6V), output current capability (24mA), propagation delay (7ns @ 5V, 50pF), and operating temperature range (-40°C ~ 85°C). Package variations are permitted as mechanical substitutes when electrical parameters remain within specification. All substitute parts listed maintain identical functional specifications and are qualified as direct or parametric equivalents based on electrical performance alignment.

Parameter Comparison

Part Number	Manufacturer	Package / Case	Voltage - Supply	Current - Quiescent (Max)	Output Current (High/Low)	Propagation Delay @ 5V, 50pF	Operating Temperature	Product Status
74AC04SJX	onsemi	14-SOIC (0.209", 5.30mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Obsolete
74AC04MTCX	onsemi	14-TSSOP (0.173", 4.40mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Active
74AC04SCX	onsemi	14-SOIC (0.154", 3.90mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Active
SN74AC04NS	Texas Instruments	14-SOIC (0.209", 5.30mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Discontinued at DiGi Electronics
CD74AC04M96	Texas Instruments	14-SOIC (0.154", 3.90mm)	1.5V ~ 5.5V	4 µA	24mA, 24mA	6.5ns	-55°C ~ 125°C	Active
SN74AC04D	Texas Instruments	14-SOIC (0.154", 3.90mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Discontinued at DiGi Electronics
SN74AC04DR	Texas Instruments	14-SOIC (0.154", 3.90mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Active
SN74AC04NSR	Texas Instruments	14-SOIC (0.209", 5.30mm)	2V ~ 6V	2 µA	24mA, 24mA	7ns	-40°C ~ 85°C	Active

Engineering Selection Recommendations

For direct replacement of the obsolete 74AC04SJX, select from active product status alternatives. The onsemi 74AC04SCX and 74AC04MTCX maintain identical electrical specifications with RoHS3 compliance and unlimited moisture sensitivity rating. Texas Instruments SN74AC04DR offers equivalent performance in active status with RoHS3 compliance and highest current inventory availability (10,100 pcs). The SN74AC04NSR provides parametric equivalence with identical electrical performance in tape and reel packaging format.

The CD74AC04M96 from Texas Instruments offers enhanced performance characteristics including extended operating temperature range (-55°C ~ 125°C) and improved propagation delay (6.5ns), suitable for applications requiring wider temperature operation. This part maintains functional compatibility while providing superior performance margins.

Package selection should be based on PCB layout requirements and assembly process compatibility. The 14-SOIC packages (0.154" and 0.209" width variants) and 14-TSSOP (0.173" width) are mechanically distinct but electrically interchangeable when footprint accommodation is available.

Frequently Asked Questions (FAQ)

Q: Can I use 74AC04SCX as a direct replacement for 74AC04SJX? A: Yes. Both parts share identical electrical specifications: 6-channel inverter, 2V ~ 6V supply, 2 µA quiescent current, 24mA output current, and 7ns propagation delay. The primary difference is package width (3.90mm vs 5.30mm). PCB layout must accommodate the 14-SOIC footprint.

Q: What is the difference between the onsemi and Texas Instruments 74AC04 variants? A: Both manufacturers produce functionally equivalent 74AC04 inverter ICs with identical logic specifications. Differences exist in packaging options, product status, and availability. onsemi offers 14-TSSOP and 14-SOIC variants in active status. Texas Instruments provides multiple package options with SN74AC04DR currently in active status with highest inventory.

Q: Is CD74AC04M96 compatible with the original 74AC04SJX? A: CD74AC04M96 is functionally compatible with enhanced specifications. It operates across a wider voltage range (1.5V ~ 5.5V vs 2V ~ 6V), wider temperature range (-55°C ~ 125°C vs -40°C ~ 85°C), and faster propagation delay (6.5ns vs 7ns). These improvements make it suitable for more demanding applications while maintaining backward compatibility.

Q: What packaging options are available for 74AC04 inverter ICs? A: Available packages include 14-SOIC (0.154" width, 3.90mm), 14-SOIC (0.209" width, 5.30mm), and 14-TSSOP (0.173" width, 4.40mm). All are surface mount packages with identical pin configurations. Selection depends on PCB layout constraints and assembly equipment compatibility.

Q: Are all substitute parts RoHS3 compliant? A: All active status parts listed (74AC04MTCX, 74AC04SCX, CD74AC04M96, SN74AC04DR, SN74AC04NSR) are RoHS3 compliant. The original 74AC04SJX has REACH Unaffected status. Compliance verification should be confirmed for specific procurement requirements.

Q: What is the moisture sensitivity level for these parts? A: All listed parts maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

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