MM74HCT04MTC Equivalent & Substitute Parts

Part Overview

The MM74HCT04MTC is a 6-channel inverter logic IC manufactured by onsemi in 14-TSSOP surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MM74HCT04MTC operates within a 4.5V to 5.5V supply voltage range and is designed for standard TTL-compatible logic applications requiring signal inversion across multiple channels.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	4.8mA, 4.8mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	20ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MM74HCT04MTC are classified based on functional and electrical compatibility within the 74HCT logic family. The substitution logic is determined by the following critical parameters:

Logic Family Compatibility: All substitutes maintain the 6-channel inverter configuration with single input per channel
Supply Voltage Range: Primary substitutes operate within the 4.5V to 5.5V range matching the original part
Package Compatibility: All substitutes use 14-TSSOP surface mount packaging with identical physical dimensions
Input/Output Logic Levels: Substitutes maintain TTL-compatible input thresholds (0.8V low, 2V high)
Propagation Delay: Substitutes operate within comparable timing specifications (17ns to 20ns @ 5V, 50pF)
Operating Temperature Range: Extended temperature variants available for wider environmental requirements
Product Status: Active alternatives prioritized over discontinued variants

Parameter Comparison

Part Number	Manufacturer	Series	Voltage - Supply	Current - Quiescent (Max)	Current - Output High, Low	Max Propagation Delay @ V, Max CL	Operating Temperature	Product Status	Packaging
MM74HCT04MTC	onsemi	74HCT	4.5V ~ 5.5V	2 µA	4.8mA, 4.8mA	20ns @ 5V, 50pF	-40°C ~ 85°C	Obsolete	Bulk
MC74HCT04ADTR2G	onsemi	74HCT	4.5V ~ 5.5V	1 µA	4mA, 4mA	17ns @ 5V, 50pF	-55°C ~ 125°C	Active	Tape & Reel (TR)
SN74HCT04PWR	Texas Instruments	74HCT	4.5V ~ 5.5V	2 µA	4mA, 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®
SN74HCT04PWT	Texas Instruments	74HCT	4.5V ~ 5.5V	2 µA	4mA, 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	Discontinued at DiGi Electronics	Cut Tape (CT) & Digi-Reel®
CD74HCT04PWR	Texas Instruments	74HCT	4.5V ~ 5.5V	2 µA	4mA, 4mA	19ns @ 4.5V, 50pF	-55°C ~ 125°C	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation: MC74HCT04ADTR2G (onsemi) or SN74HCT04PWR (Texas Instruments)

Both parts maintain active product status and full compatibility with the MM74HCT04MTC electrical specifications. The MC74HCT04ADTR2G offers improved quiescent current performance (1 µA vs. 2 µA) and extended operating temperature range (-55°C to 125°C), making it suitable for applications requiring lower power consumption or wider environmental tolerance. The SN74HCT04PWR provides equivalent performance with Texas Instruments manufacturing support and is available in multiple packaging formats.

Secondary Recommendation: CD74HCT04PWR (Texas Instruments)

This part provides extended operating temperature range (-55°C to 125°C) with active product status. Propagation delay is specified at 4.5V rather than 5V, providing conservative timing margins for designs operating at lower supply voltages within the 4.5V to 5.5V range.

Avoid: SN74HCT04PWT is discontinued at DiGi Electronics and should not be selected for new designs despite technical compatibility.

All recommended substitutes are ROHS3 compliant, MSL Level 1, and maintain identical 14-TSSOP packaging geometry for direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can MC74HC04ADTR2G substitute for MM74HCT04MTC?

A: MC74HC04ADTR2G operates within a 2V to 6V supply range, which encompasses the MM74HCT04MTC 4.5V to 5.5V requirement. However, this part belongs to the 74HC logic family rather than 74HCT. While functionally similar, the 74HC family has different input logic level thresholds (0.5V to 1.8V low, 1.5V to 4.2V high) compared to the 74HCT family (0.8V low, 2V high). This difference may affect circuit behavior in applications with marginal input signal levels. Use only if your circuit design accommodates these threshold variations.

Q: What is the difference between 74HCT and 74HC logic families?

A: The 74HCT family is TTL-input compatible with input thresholds matching standard TTL levels (0.8V low, 2V high). The 74HC family has CMOS-level input thresholds. Both families operate at similar supply voltages and offer comparable propagation delays. The 74HCT family is preferred when interfacing with TTL-level signals or legacy TTL circuits.

Q: Are all substitute parts available in the same packaging?

A: All listed substitutes use 14-TSSOP surface mount packaging with identical physical dimensions (0.173" width, 4.40mm). However, packaging formats differ: the original MM74HCT04MTC is supplied in bulk, while substitutes are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. These format differences do not affect electrical performance or PCB compatibility.

Q: Which substitute offers the best performance improvement?

A: MC74HCT04ADTR2G provides the lowest quiescent current (1 µA vs. 2 µA) and fastest propagation delay (17ns vs. 20ns @ 5V, 50pF). It also offers the widest operating temperature range (-55°C to 125°C vs. -40°C to 85°C). These improvements make it suitable for power-sensitive or temperature-extreme applications.

Q: Is the extended temperature range (-55°C to 125°C) necessary for my application?

A: Extended temperature range is required only if your application operates outside the -40°C to 85°C range. If your design operates within standard industrial temperature limits, parts with standard temperature ranges (MM74HCT04MTC, SN74HCT04PWR, SN74HCT04PWT) are functionally equivalent and may offer cost advantages.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes. All listed 74HCT family substitutes are pin-compatible and electrically compatible within the specified parameter ranges. Direct PCB layout substitution is possible without design modifications. Verify that your circuit design does not depend on the specific quiescent current or propagation delay values of the original part.

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