74HC04DR2G Equivalent & Substitute Parts

Part Overview

The 74HC04DR2G is a 6-channel inverter logic IC manufactured by onsemi in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74HC04 series provides basic logic inversion functionality across six independent channels, suitable for general-purpose digital signal conditioning and logic level conversion applications.

Key Parameters

Parameter	Specification
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage Supply Range	2V to 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2 mA / 5.2 mA
Input Logic Level - Low	0.5V to 1.8V
Input Logic Level - High	1.5V to 4.2V
Max Propagation Delay @ 6V, 50pF	13 ns
Operating Temperature Range	-55°C to 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74HC04DR2G is determined by the following critical parameters:

Logic Function: All substitutes must provide 6-channel inverter functionality with single input per channel
Package Compatibility: All substitutes must use 14-SOIC surface mount package with identical pinout
Electrical Specifications: Supply voltage range (2V–6V), output current capability (5.2 mA), and input logic thresholds must be compatible
Propagation Delay: Maximum delay at 6V with 50pF load must not exceed application timing requirements
Operating Temperature: Extended range (-55°C to 125°C) or commercial range (-40°C to 85°C) based on application needs

Substitute parts are grouped into three categories:

Direct Equivalents (MC74HC04ADR2G, NLV74HC04ADR2G): Identical electrical performance and temperature range
Functional Equivalents (MM74HC04M, MM74HC04MX, SN74HC04D, SN74HC04DR): Same logic function and package with minor propagation delay variation (16 ns vs 13 ns) and reduced temperature range (-40°C to 85°C)
Series Variants (CD74HC04M, CD74HC04M96, CD74HC04MT, CD74HCU04M): Same base function with different manufacturers or logic family variants (74HCU has different input thresholds)

Parameter Comparison

Part Number	Manufacturer	Status	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temp Range	Package	RoHS Status
74HC04DR2G	onsemi	Obsolete	2V–6V	2 µA	13 ns	-55°C to 125°C	14-SOIC	REACH Unaffected
MC74HC04ADR2G	onsemi	Active	2V–6V	1 µA	13 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
NLV74HC04ADR2G	onsemi	Obsolete	2V–6V	1 µA	13 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
MM74HC04M	onsemi	Active	2V–6V	2 µA	16 ns	-40°C to 85°C	14-SOIC	ROHS3 Compliant
MM74HC04MX	onsemi	Active	2V–6V	2 µA	16 ns	-40°C to 85°C	14-SOIC	ROHS3 Compliant
CD74HC04M	Harris Corporation	Obsolete	2V–6V	2 µA	14 ns	-55°C to 125°C	14-SOIC	RoHS Non-Compliant
CD74HC04M96	Texas Instruments	Active	2V–6V	2 µA	14 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
CD74HC04MT	Texas Instruments	Discontinued at DiGi Electronics	2V–6V	2 µA	14 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
SN74HC04D	Texas Instruments	Discontinued at DiGi Electronics	2V–6V	2 µA	16 ns	-40°C to 85°C	14-SOIC	ROHS3 Compliant
SN74HC04DR	Texas Instruments	Active	2V–6V	2 µA	16 ns	-40°C to 85°C	14-SOIC	ROHS3 Compliant
CD74HCU04M	Texas Instruments	Last Time Buy	2V–6V	2 µA	12 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

For Extended Temperature Range Applications (-55°C to 125°C):

Select MC74HC04ADR2G as the primary replacement for 74HC04DR2G. Both parts maintain identical propagation delay (13 ns) and operating temperature range. MC74HC04ADR2G is currently active with ROHS3 compliance, providing superior long-term availability compared to the obsolete 74HC04DR2G. Quiescent current is improved at 1 µA versus 2 µA.

Alternative: CD74HC04M96 (Texas Instruments) offers equivalent performance with 14 ns propagation delay and active product status with ROHS3 compliance.

For Commercial Temperature Range Applications (-40°C to 85°C):

MM74HC04MX or SN74HC04DR provide functional equivalence with active product status. Both maintain 2V–6V supply compatibility and 5.2 mA output current. Propagation delay increases to 16 ns, which is acceptable for non-critical timing applications. MM74HC04MX offers higher inventory availability (17,822 pcs).

For Automotive or High-Reliability Applications:

NLV74HC04ADR2G includes AEC-Q100 qualification and automotive-grade designation, suitable for automotive and harsh environment applications requiring extended temperature operation (-55°C to 125°C).

Compliance Considerations:

All recommended active substitutes carry ROHS3 compliance. CD74HC04M (Harris Corporation) is RoHS non-compliant and should be avoided for new designs subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC04DR as a direct replacement for 74HC04DR2G?

A: SN74HC04DR is functionally compatible but with operational differences. It operates over -40°C to 85°C (versus -55°C to 125°C) and has 16 ns propagation delay (versus 13 ns). Use only if your application does not require extended temperature range or faster switching performance.

Q: What is the difference between 74HC04 and 74HCU04?

A: Both provide 6-channel inverter logic in 14-SOIC packages. The 74HCU04 variant (CD74HCU04M) has different input logic thresholds (0.3V–1.1V low, 1.7V–4.8V high) compared to standard 74HC04 (0.5V–1.8V low, 1.5V–4.2V high). Use 74HCU04 only if your design specifically requires these altered thresholds.

Q: Is MM74HC04M the same as MM74HC04MX?

A: Both are onsemi parts with identical electrical specifications and operating temperature range (-40°C to 85°C). The difference is packaging: MM74HC04M uses Tube packaging, while MM74HC04MX uses Cut Tape (CT) & Digi-Reel packaging. Select based on your procurement and assembly requirements.

Q: Why does MC74HC04ADR2G show lower quiescent current (1 µA vs 2 µA)?

A: Lower quiescent current indicates improved power efficiency in the MC74HC04ADR2G variant. This is a beneficial characteristic that does not affect functional compatibility. The part remains a direct electrical equivalent.

Q: Can I use parts with different propagation delays interchangeably?

A: Propagation delay differences (12–16 ns range) are acceptable for most general-purpose logic applications. However, if your circuit has critical timing requirements or operates at high frequencies, verify that the substitute's maximum delay meets your system specifications before substitution.

Q: What packaging options are available?

A: All listed substitutes use 14-SOIC surface mount packages with identical pinout and physical dimensions (0.154" width, 3.90mm). Packaging variations refer to supplier delivery format: Tube, Cut Tape (CT) & Digi-Reel, or bulk options. These do not affect electrical compatibility.

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