SN74AC00D Equivalent & Substitute Parts

Part Overview

The SN74AC00D is a NAND Gate IC with 4 channels and 2 inputs per channel, manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The 74AC00 logic gate series provides standard NAND functionality across multiple manufacturers, enabling direct functional replacement with compatible alternatives that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
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	8ns
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74AC00D is determined by strict equivalence across the following criteria:

Primary Substitution Criteria:

Logic Type: NAND Gate (4 channels, 2 inputs)
Package: 14-SOIC surface mount
Voltage Supply Range: 2V ~ 6V
Output Current: 24mA (high and low)
Propagation Delay: 8ns @ 5V, 50pF
RoHS3 Compliance
MSL Level 1

Acceptable Variations:

Quiescent Current: Up to 4 µA (SN74AC00D specifies 2 µA max; onsemi variants specify 4 µA max)
Operating Temperature: Extended range acceptable (-55°C ~ 125°C exceeds -40°C ~ 85°C requirement)
Packaging Format: Tube, Cut Tape (CT) & Digi-Reel®, or Tape & Reel (TR) are all acceptable for the same part number
Manufacturer: Texas Instruments or onsemi (both produce 74AC00 series)
Product Status: Active status preferred over discontinued

Parameter Comparison

Parameter	SN74AC00D (Main)	SN74AC00DR	74AC00SCX	MC74AC00DR2G	MC74AC00DG
Manufacturer	Texas Instruments	Texas Instruments	onsemi	onsemi	onsemi
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4	4	4
Number of Inputs	2	2	2	2	2
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	2 µA	4 µA	4 µA
Current - Output High, Low	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	0.9V ~ 1.65V	0.9V ~ 1.65V
Input Logic Level - High	2.1V ~ 3.85V	2.1V ~ 3.85V	2.1V ~ 3.85V	2.1V ~ 3.85V	2.1V ~ 3.85V
Max Propagation Delay @ 5V, 50pF	8ns	8ns	8ns	8ns	8ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: SN74AC00DR

The SN74AC00DR is the direct Texas Instruments equivalent in Cut Tape & Digi-Reel® packaging. It maintains identical electrical specifications to the SN74AC00D, including 2 µA quiescent current and -40°C ~ 85°C operating temperature range. Product status is Active, ensuring long-term availability. This part is the preferred substitute when packaging format flexibility is acceptable.

Secondary Recommendation: 74AC00SCX

The 74AC00SCX is manufactured by onsemi and provides identical electrical performance with Active product status. Quiescent current remains at 2 µA specification. This part is suitable for applications where onsemi sourcing is preferred or when Cut Tape & Digi-Reel® packaging is required.

Extended Temperature Alternative: MC74AC00DR2G or MC74AC00DG

Both onsemi parts (MC74AC00DR2G in Tape & Reel format and MC74AC00DG in Tube format) offer extended operating temperature range (-55°C ~ 125°C) and are suitable for applications requiring wider temperature performance. Quiescent current specification is 4 µA, which is acceptable for most applications. MC74AC00DG matches the original Tube packaging format of the SN74AC00D.

Selection Criteria:

Use SN74AC00DR or 74AC00SCX for standard temperature range applications (-40°C ~ 85°C)
Use MC74AC00DR2G or MC74AC00DG for extended temperature applications (-55°C ~ 125°C)
All parts are ROHS3 compliant and MSL Level 1
All parts maintain identical logic functionality and timing specifications

Frequently Asked Questions (FAQ)

Q: Can I use MC74AC00DR2G or MC74AC00DG as direct replacements for SN74AC00D?

A: Yes. Both parts are functionally equivalent. The extended operating temperature range (-55°C ~ 125°C) exceeds the original specification (-40°C ~ 85°C), making them suitable for the same applications. The quiescent current specification of 4 µA is higher than the original 2 µA but remains within acceptable limits for NAND gate logic applications.

Q: What is the difference between the packaging formats (Tube, Cut Tape & Digi-Reel®, Tape & Reel)?

A: Packaging format affects handling, storage, and automated assembly processes. Tube packaging (SN74AC00D, MC74AC00DG) is suitable for manual handling and lower-volume applications. Cut Tape & Digi-Reel® (SN74AC00DR, 74AC00SCX) and Tape & Reel (MC74AC00DR2G) formats are optimized for automated pick-and-place assembly. All formats contain the same die and provide identical electrical performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (SN74AC00DR, 74AC00SCX, MC74AC00DR2G, MC74AC00DG) are ROHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity), matching the original SN74AC00D specifications.

Q: Which substitute should I choose if I need the longest lead time availability?

A: All substitute parts have Active product status. SN74AC00DR (Texas Instruments) and 74AC00SCX (onsemi) are recommended for standard applications. Inventory levels vary; consult current distributor stock for specific availability.

Q: Can I mix different manufacturers in the same design?

A: Yes. All listed parts (Texas Instruments and onsemi) produce functionally equivalent 74AC00 NAND gate ICs with identical logic specifications, timing, and electrical characteristics. Cross-manufacturer substitution is standard practice for this logic family.

Q: What happens if my application requires the exact -40°C ~ 85°C temperature range?

A: Use SN74AC00DR or 74AC00SCX, which specify the same operating temperature range as the original SN74AC00D. The MC74AC00DR2G and MC74AC00DG extended range (-55°C ~ 125°C) are also acceptable, as they exceed the minimum requirement.

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