74AC00SJ NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74AC00SJ is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in a 14-SOP surface mount package. This part is classified as obsolete, making substitute components necessary for new designs and production continuity. The 74AC00 series represents a standard logic gate family with multiple manufacturer variants available to ensure supply chain flexibility and design compatibility.

Key Parameters

Parameter	Specification
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	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	8ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.209", 5.30mm Width)
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74AC00SJ is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic type (NAND Gate), circuit count (4), and input count (2) must be identical
Supply voltage range must encompass or match the original specification (2V ~ 6V minimum)
Output current capability must meet or exceed 24mA for both high and low states
Input logic levels must be compatible with the original thresholds
Propagation delay must not exceed 8ns @ 5V, 50pF
Operating temperature range must support -40°C ~ 85°C minimum
Surface mount package configuration required
Moisture sensitivity level MSL 1 (Unlimited) acceptable

Substitute Categories:

Group A - Direct Electrical & Mechanical Equivalents (Identical Parameters): SN74AC00D and SN74AC00DR meet all electrical specifications identically to the 74AC00SJ, with matching voltage supply (2V ~ 6V), quiescent current (2 µA), output current (24mA/24mA), input logic levels, propagation delay (8ns), and operating temperature range (-40°C ~ 85°C).

Group B - Extended Specification Substitutes (Broader Operating Range): CD74AC00M and CD74AC00M96 feature expanded supply voltage range (1.5V ~ 5.5V) and extended operating temperature (-55°C ~ 125°C), with identical logic functionality and output current specifications. These parts are suitable where broader environmental tolerance is beneficial.

Group C - Package Variant (Identical Electrical, Different Tape & Reel Packaging): SN74AC00NSR provides identical electrical performance with alternative tape & reel packaging format, maintaining all critical electrical parameters.

Parameter Comparison

Parameter	74AC00SJ (Main)	SN74AC00D	SN74AC00DR	CD74AC00M	CD74AC00M96	SN74AC00NSR
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Harris Corporation	Texas Instruments	Texas Instruments
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Circuits / Inputs	4 / 2	4 / 2	4 / 2	4 / 2	4 / 2	4 / 2
Voltage Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	1.5V ~ 5.5V	1.5V ~ 5.5V	2V ~ 6V
Quiescent Current (Max)	2 µA	2 µA	2 µA	4 µA	4 µA	2 µA
Output Current High/Low	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA
Input Logic Level - Low	0.9V ~ 1.65V	0.9V ~ 1.65V	0.9V ~ 1.65V	0.3V ~ 1.65V	0.3V ~ 1.65V	0.9V ~ 1.65V
Input Logic Level - High	2.1V ~ 3.85V	2.1V ~ 3.85V	2.1V ~ 3.85V	1.2V ~ 3.85V	1.2V ~ 3.85V	2.1V ~ 3.85V
Propagation Delay @ 5V, 50pF	8ns	8ns	8ns	7.3ns	7.3ns	8ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C
Package / Case	14-SOIC (0.209", 5.30mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.209", 5.30mm)
Product Status	Obsolete	Discontinued at DiGi Electronics	Active	Obsolete	Active	Active
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For New Designs and Active Production: SN74AC00DR (Texas Instruments) is the primary recommendation. This part maintains identical electrical specifications to the 74AC00SJ, carries active product status, is ROHS3 compliant, and has confirmed inventory availability. The 14-SOIC package with 0.154" width represents the modern standard for this logic family.

For Extended Environmental Operating Range: CD74AC00M96 (Texas Instruments) is suitable when designs require operation beyond the standard -40°C ~ 85°C range, extending to -55°C ~ 125°C. This part is ROHS3 compliant and actively produced. The expanded supply voltage range (1.5V ~ 5.5V) provides additional design flexibility.

For Tape & Reel Packaging Requirements: SN74AC00NSR (Texas Instruments) provides identical electrical performance with tape & reel packaging format. This part is active, ROHS3 compliant, and maintains the original 14-SOIC (0.209", 5.30mm) package width.

Avoid in New Designs: CD74AC00M (Harris Corporation) is obsolete and RoHS non-compliant. SN74AC00D is discontinued at DiGi Electronics. These parts should be used only for legacy system maintenance where no alternative exists.

Frequently Asked Questions (FAQ)

Q: Can I use CD74AC00M96 as a direct replacement for 74AC00SJ in existing designs? A: Yes. CD74AC00M96 meets all electrical specifications of the 74AC00SJ and exceeds them with extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). The primary consideration is package width: CD74AC00M96 uses 14-SOIC (0.154", 3.90mm) versus the original 14-SOIC (0.209", 5.30mm). PCB layout verification is required.

Q: What is the difference between SN74AC00D and SN74AC00DR? A: Both parts are electrically identical with matching voltage supply (2V ~ 6V), quiescent current (2 µA), output current (24mA/24mA), and propagation delay (8ns). The difference is packaging format: SN74AC00D uses Tube packaging, while SN74AC00DR uses Cut Tape & Digi-Reel format. SN74AC00DR is active; SN74AC00D is discontinued at DiGi Electronics.

Q: Are there package compatibility issues between substitute parts? A: Yes. The 74AC00SJ uses 14-SOIC (0.209", 5.30mm width). SN74AC00D, SN74AC00DR, CD74AC00M, and CD74AC00M96 use 14-SOIC (0.154", 3.90mm width). SN74AC00NSR maintains the original 14-SOIC (0.209", 5.30mm width). PCB footprint verification is mandatory before substitution.

Q: Which substitute part has the best compliance status? A: SN74AC00DR, CD74AC00M96, and SN74AC00NSR are all ROHS3 compliant and REACH unaffected. These three parts meet current regulatory requirements for new production. CD74AC00M is RoHS non-compliant and should not be used in new designs.

Q: Can I substitute 74AC00SJ with a part that has a lower quiescent current specification? A: No. The 74AC00SJ specifies 2 µA maximum quiescent current. CD74AC00M and CD74AC00M96 specify 4 µA, which exceeds the original requirement. These parts are acceptable only if the design can tolerate the higher quiescent current. SN74AC00D, SN74AC00DR, and SN74AC00NSR maintain the 2 µA specification.

Q: What is the impact of propagation delay differences between substitutes? A: The 74AC00SJ specifies 8ns maximum propagation delay @ 5V, 50pF. CD74AC00M and CD74AC00M96 specify 7.3ns, which is faster and fully compatible. Faster propagation delay does not create compatibility issues in logic circuits designed for the original 8ns specification.

Q: Is SN74AC00NSR suitable for high-volume production? A: Yes. SN74AC00NSR is actively produced by Texas Instruments, ROHS3 compliant, and available in tape & reel packaging suitable for automated assembly. Inventory availability is confirmed at 3400 pieces.

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