74AC10SCX NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74AC10SCX is a NAND Gate IC featuring 3 channels with 3 inputs per channel in a 14-SOIC package, manufactured by onsemi. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74AC series represents a standard logic family with established cross-manufacturer compatibility within defined electrical and mechanical parameters.

Key Parameters

Parameter	Specification
Logic Type	NAND Gate
Number of Circuits	3
Number of Inputs	3
Voltage Supply Range	2V ~ 6V
Package Type	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
Max Propagation Delay	7ns @ 5V, 50pF

Substitute Part Grouping Explanation

Substitution for the 74AC10SCX is determined by the following criteria:

Primary Substitution Parameters:

Logic Type: NAND Gate (3 channels, 3 inputs per channel)
Package: 14-SOIC form factor
Voltage Supply: 2V ~ 6V operating range
Mounting: Surface Mount
Operating Temperature: -40°C ~ 85°C
Max Propagation Delay: 7ns @ 5V, 50pF

Parts meeting all primary parameters are classified as direct substitutes. Parts with extended voltage ranges (1.5V ~ 5.5V) or wider temperature ranges (-55°C ~ 125°C) are classified as similar substitutes, as they provide broader operational capability while maintaining core functionality.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Output Current (High/Low)	Propagation Delay	Operating Temp	Package	Packaging Type
74AC10SCX	onsemi	Obsolete	2V ~ 6V	2 µA	24mA / 24mA	7ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Tube
MC74AC10DR2G	onsemi	Active	2V ~ 6V	4 µA	24mA / 24mA	7ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Tape & Reel
MC74AC10DG	onsemi	Active	2V ~ 6V	4 µA	24mA / 24mA	7ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Tube
SN74AC10D	Texas Instruments	Discontinued at DiGi Electronics	2V ~ 6V	2 µA	24mA / 24mA	7ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Tube
SN74AC10DR	Texas Instruments	Active	2V ~ 6V	2 µA	24mA / 24mA	7ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Cut Tape & Digi-Reel
CD74AC10M	Texas Instruments	Obsolete	1.5V ~ 5.5V	4 µA	24mA / 24mA	12.2ns @ 5V, 50pF	-55°C ~ 125°C	14-SOIC	Tube
CD74AC10M96	Texas Instruments	Active	1.5V ~ 5.5V	4 µA	24mA / 24mA	12.2ns @ 5V, 50pF	-55°C ~ 125°C	14-SOIC	Tape & Reel
SN74AC10NSR	Texas Instruments	Active	2V ~ 6V	2 µA	24mA / 24mA	7ns @ 5V, 50pF	-40°C ~ 85°C	14-SO (0.209", 5.30mm)	Tape & Reel

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical & Thermal Specifications):

MC74AC10DR2G and MC74AC10DG (onsemi) are direct functional equivalents with active product status and RoHS3 compliance. Both maintain the 2V ~ 6V supply range, -40°C ~ 85°C operating temperature, and 7ns propagation delay. MC74AC10DR2G is supplied in Tape & Reel packaging, while MC74AC10DG is supplied in Tube packaging.

SN74AC10DR (Texas Instruments) is an active direct substitute with identical electrical specifications and RoHS3 compliance, supplied in Cut Tape & Digi-Reel packaging.

SN74AC10NSR (Texas Instruments) is an active direct substitute with identical electrical specifications and RoHS3 compliance. Note: This part uses a 14-SO package with 0.209" width versus the standard 14-SOIC 0.154" width. PCB footprint compatibility must be verified before selection.

Similar Substitutes (Extended Operating Range):

CD74AC10M96 (Texas Instruments) is an active substitute with extended voltage range (1.5V ~ 5.5V) and extended operating temperature (-55°C ~ 125°C). Propagation delay is 12.2ns at 5V, 50pF. This part provides broader environmental capability and is supplied in Tape & Reel packaging with RoHS3 compliance.

CD74AC10M (Texas Instruments) is obsolete but functionally equivalent to CD74AC10M96 with identical electrical specifications.

Availability Considerations:

MC74AC10DR2G and CD74AC10M96 are recommended for new designs due to active product status and established supply chains. SN74AC10DR provides an alternative from Texas Instruments with active status. All recommended substitutes carry RoHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can I use CD74AC10M96 as a direct replacement for 74AC10SCX?

A: CD74AC10M96 is functionally compatible but operates with extended specifications. It accepts a lower voltage range (1.5V ~ 5.5V versus 2V ~ 6V) and operates across a wider temperature range (-55°C ~ 125°C versus -40°C ~ 85°C). Propagation delay is 12.2ns versus 7ns. If your application operates within the original 2V ~ 6V and -40°C ~ 85°C range, this part is suitable. Extended specifications provide additional design margin for future applications.

Q: What is the difference between MC74AC10DR2G and MC74AC10DG?

A: Both parts are electrically and thermally identical. The difference is packaging: MC74AC10DR2G is supplied in Tape & Reel format for automated assembly, while MC74AC10DG is supplied in Tube format for manual handling. Select based on your assembly process requirements.

Q: Is SN74AC10NSR compatible with my PCB designed for 14-SOIC?

A: SN74AC10NSR uses a 14-SO package with 0.209" width, compared to the standard 14-SOIC 0.154" width. While both are 14-pin packages, the physical dimensions differ. Verify your PCB footprint specifications before substitution. If your design requires the narrower 0.154" width, use MC74AC10DR2G, MC74AC10DG, or SN74AC10DR instead.

Q: Why is the quiescent current different between some substitutes?

A: The 74AC10SCX and SN74AC10D/SN74AC10DR specify 2 µA maximum quiescent current, while MC74AC10DR2G, MC74AC10DG, CD74AC10M, and CD74AC10M96 specify 4 µA. Both values are within acceptable limits for 74AC series logic. The difference reflects manufacturing process variations between onsemi and Texas Instruments. For power-sensitive applications, verify the 2 µA specification is required before selecting parts.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All active and recently discontinued substitutes listed carry RoHS3 compliance certification. All parts are REACH unaffected.

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