74ACT00MTC NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACT00MTC is a quad 2-input NAND gate logic IC manufactured by onsemi in a 14-TSSOP surface mount package. This part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements. The 74ACT series represents a standard logic family with established pin compatibility across multiple manufacturers and packaging options.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	4.5V ~ 5.5V
Output Current (High/Low)	24mA / 24mA
Input Logic Level Low	0.8V
Input Logic Level High	2V
Max Propagation Delay	9ns @ 5V, 50pF
Mounting Type	Surface Mount
Package Type	14-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 74ACT00MTC is determined by functional equivalence within the 74ACT logic family. All substitute parts maintain identical logic function (quad 2-input NAND), pin count (14 pins), and core electrical parameters including supply voltage range, output current capability, input logic thresholds, and propagation delay specifications.

Substitutes are categorized as follows:

Direct Manufacturer Equivalents maintain identical electrical specifications and packaging, differing only in manufacturer or packaging format (tape & reel vs. tube).

Similar Equivalents maintain all electrical specifications but use an alternative package variant (14-SSOP vs. 14-TSSOP), requiring PCB layout verification for pin pitch compatibility.

Parametric Equivalents meet all functional and electrical requirements but may have different product status or availability through specific distributors.

The key parameters determining substitutability are: logic family (74ACT), gate type (NAND), circuit count (4), input count (2 per gate), supply voltage range (4.5V–5.5V), output current (24mA), and package pin count (14).

Parameter Comparison

Part Number	Manufacturer	Product Status	Package Type	Packaging Format	Quiescent Current (Max)	Operating Temperature	RoHS Status
74ACT00MTC	onsemi	Obsolete	14-TSSOP	Tube	2 µA	-40°C ~ 85°C	ROHS3 Compliant
MC74ACT00DTR2G	onsemi	Active	14-TSSOP	Tape & Reel	4 µA	-55°C ~ 125°C	ROHS3 Compliant
SN74ACT00PWR	Texas Instruments	Active	14-TSSOP	Tape & Reel	2 µA	-40°C ~ 85°C	ROHS3 Compliant
SN74ACT00DBR	Texas Instruments	Active	14-SSOP	Tape & Reel	2 µA	-40°C ~ 85°C	ROHS3 Compliant
SN74ACT00PW	Texas Instruments	Discontinued at DiGi Electronics	14-TSSOP	Tube	2 µA	-40°C ~ 85°C	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement with active product status and identical specifications: Select MC74ACT00DTR2G (onsemi) or SN74ACT00PWR (Texas Instruments). Both are active products in 14-TSSOP packaging with full electrical equivalence to the 74ACT00MTC. MC74ACT00DTR2G offers extended operating temperature range (-55°C to 125°C) suitable for industrial applications. SN74ACT00PWR maintains the original -40°C to 85°C range with 2 µA quiescent current matching the original part.

For package-variant substitution: SN74ACT00DBR provides Texas Instruments sourcing in 14-SSOP packaging. This part is electrically equivalent but uses a different package footprint (5.30mm width vs. 4.40mm). PCB layout modification is required; verify pin pitch compatibility with existing designs before implementation.

For legacy or specific sourcing requirements: SN74ACT00PW is available in tube packaging format matching the original 74ACT00MTC distribution method, though it is discontinued at DiGi Electronics. Verify current availability through alternative distributors before design commitment.

All substitute parts maintain ROHS3 compliance and are suitable for direct functional replacement within the specified electrical operating parameters.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT00DTR2G replace 74ACT00MTC directly on the PCB? A: Yes. MC74ACT00DTR2G is pin-compatible and electrically equivalent. The primary difference is extended operating temperature range (-55°C to 125°C vs. -40°C to 85°C) and slightly higher quiescent current (4 µA vs. 2 µA). Both are acceptable for standard applications within the original temperature specification.

Q: What is the difference between 14-TSSOP and 14-SSOP packages? A: Both are 14-pin surface mount packages with identical pin assignments. The primary difference is package width: 14-TSSOP is 4.40mm wide, while 14-SSOP is 5.30mm wide. PCB footprints are not interchangeable; verify your design uses the correct footprint before ordering SN74ACT00DBR.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original 74ACT00MTC.

Q: Why does MC74ACT00DTR2G have higher quiescent current than the original part? A: Quiescent current variation (2 µA vs. 4 µA maximum) is within normal manufacturing tolerance for the 74ACT logic family and does not affect functional performance in standard applications. Both values are negligible for most circuit designs.

Q: Can I use SN74ACT00PW as a long-term production solution? A: SN74ACT00PW is discontinued at DiGi Electronics. While currently available through some distributors, it is not recommended for new production designs. Use SN74ACT00PWR (active status) or MC74ACT00DTR2G for ongoing production support.

Q: Do all substitute parts support the same supply voltage range? A: Yes. All substitute parts operate within the 4.5V to 5.5V supply range, maintaining full electrical equivalence to the 74ACT00MTC.

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