SN74HCU04D Equivalent & Substitute Parts

Part Overview

The SN74HCU04D is a 6-channel inverter logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is designated as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for production and field replacement applications.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage Supply Range	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2mA / 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.7V ~ 4.8V
Max Propagation Delay	14ns @ 6V, 50pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HCU04D is determined by the following criteria:

Primary Substitution Criteria:

Logic type: Inverter with 6 channels, 1 input per channel
Supply voltage range: 2V ~ 6V minimum
Output current capability: 5.2mA minimum for both high and low states
Propagation delay: 14ns or faster at 6V with 50pF load
Package: 14-SOIC surface mount form factor
Input logic levels: Compatible threshold ranges
Operating temperature: -40°C minimum to 85°C minimum

Substitution Categories:

Category A - Direct Equivalents (Identical Specifications): Parts with matching electrical characteristics, supply voltage, output current, propagation delay, and input logic thresholds. These provide pin-for-pin compatibility with no design modifications required.

Category B - Enhanced Performance (Superior Specifications): Parts with improved quiescent current, faster propagation delay, or extended operating temperature range. These are functionally compatible and provide performance benefits.

Category C - Compatible Alternatives (Different Series): Parts from different logic families (74HC vs 74HCU) that meet core functional requirements but may have different quiescent current specifications or input logic thresholds. Compatibility depends on specific circuit requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Packaging	Voltage Supply	Quiescent Current (Max)	Output Current H/L	Propagation Delay	Operating Temp	Product Status
SN74HCU04D	Texas Instruments	74HCU	Tube	2V ~ 6V	2 µA	5.2mA / 5.2mA	14ns @ 6V, 50pF	-40°C ~ 85°C	Last Time Buy
SN74HCU04DR	Texas Instruments	74HCU	Tape & Reel	2V ~ 6V	2 µA	5.2mA / 5.2mA	14ns @ 6V, 50pF	-40°C ~ 85°C	Active
MM74HCU04M	onsemi	74HCU	Tube	2V ~ 6V	2 µA	5.2mA / 7.8mA	14ns @ 6V, 50pF	-40°C ~ 85°C	Active
MM74HCU04MX	Fairchild Semiconductor	74HCU	Not Specified	2V ~ 6V	2 µA	5.2mA / 7.8mA	14ns @ 6V, 50pF	-40°C ~ 85°C	Active
74HC04S14-13	Diodes Incorporated	74HC	Tape & Reel	2V ~ 6V	20 µA	5.2mA / 5.2mA	15ns @ 6V, 50pF	-40°C ~ 125°C	Active
74HCU04S14-13	Diodes Incorporated	74HCU	Tape & Reel	2V ~ 6V	20 µA	5.2mA / 5.2mA	12ns @ 6V, 50pF	-40°C ~ 125°C	Active
MC74HCU04ADG	onsemi	74HCU	Tube	2V ~ 6V	1 µA	5.2mA / 5.2mA	12ns @ 6V, 50pF	-55°C ~ 125°C	Active
MC74HCU04ADR2G	onsemi	74HCU	Tape & Reel	2V ~ 6V	1 µA	5.2mA / 5.2mA	12ns @ 6V, 50pF	-55°C ~ 125°C	Active
MM74HC04M	onsemi	74HC	Tube	2V ~ 6V	2 µA	5.2mA / 5.2mA	16ns @ 6V, 50pF	-40°C ~ 85°C	Active
MM74HC04MX	onsemi	74HC	Cut Tape & Digi-Reel	2V ~ 6V	2 µA	5.2mA / 5.2mA	16ns @ 6V, 50pF	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Tier 1 - Recommended Direct Replacements (Active Status, Identical Specifications):

SN74HCU04DR is the primary recommended substitute. Manufactured by Texas Instruments, it provides identical electrical specifications to the SN74HCU04D with the only difference being packaging format (Tape & Reel vs. Tube). This part maintains full compatibility with existing designs and carries Active product status with ROHS3 compliance.

Tier 2 - Enhanced Performance Alternatives (Active Status, Improved Specifications):

MC74HCU04ADR2G and MC74HCU04ADG (onsemi) offer superior performance characteristics including reduced quiescent current (1 µA vs. 2 µA), faster propagation delay (12ns vs. 14ns), and extended operating temperature range (-55°C to 125°C vs. -40°C to 85°C). Both parts maintain 74HCU series compatibility and ROHS3 compliance. These are suitable for applications requiring lower power consumption or wider temperature operation.

74HCU04S14-13 (Diodes Incorporated) provides faster propagation delay (12ns) and extended temperature range (-40°C to 125°C) while maintaining 74HCU series specifications. Higher quiescent current (20 µA) may be a consideration in ultra-low-power applications.

Tier 3 - Compatible Alternatives (Different Series, Active Status):

MM74HCU04M and MM74HCU04MX (onsemi) are 74HCU series parts with slightly higher output low current (7.8mA vs. 5.2mA) and different input logic thresholds. These remain functionally compatible for standard inverter applications.

MM74HC04M and MM74HC04MX (onsemi) are 74HC series alternatives with higher quiescent current (2 µA) and slower propagation delay (16ns). These are suitable for applications where the 74HC family specifications are acceptable.

74HC04S14-13 (Diodes Incorporated) is a 74HC series part with higher quiescent current (20 µA) and extended temperature range. Compatibility depends on circuit tolerance for increased power consumption.

Compliance and Certification:

All recommended substitutes carry ROHS3 compliance, MSL rating of 1 (Unlimited), and REACH Unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use 74HC series parts as substitutes for the 74HCU04D?

A: Yes, with design verification. The 74HC series (MM74HC04M, MM74HC04MX, 74HC04S14-13) are functionally compatible inverter ICs in the same package. However, they have higher quiescent current (2-20 µA vs. 2 µA) and different input logic thresholds. Verify that your circuit can tolerate these differences before substitution.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is used for manual assembly and small-quantity applications, while Tape & Reel packaging is optimized for automated pick-and-place assembly. Both contain identical die and electrical specifications. Selection depends on your assembly process requirements.

Q: Why does the SN74HCU04D have Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing this part number. Existing inventory may be available, but no new production is planned. Substitution to an Active status part is recommended for new designs and long-term production planning.

Q: Are MC74HCU04ADR2G and MC74HCU04ADG interchangeable?

A: Yes. Both are onsemi 74HCU series parts with identical electrical specifications. The only difference is packaging: ADR2G is Tape & Reel format for automated assembly, while ADG is Tube format for manual assembly.

Q: What does MSL 1 (Unlimited) mean?

A: MSL (Moisture Sensitivity Level) 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitutes maintain this rating.

Q: Can I substitute a faster propagation delay part (12ns) for the original 14ns specification?

A: Yes. Faster propagation delay is a performance improvement that maintains backward compatibility. Parts like 74HCU04S14-13 and MC74HCU04ADR2G with 12ns delay are direct functional upgrades.

Q: What is the significance of the input logic level differences between parts?

A: Input logic thresholds determine the voltage levels at which the inverter recognizes a logic 0 or logic 1. The SN74HCU04D specifies 0.5V-1.8V for low and 1.7V-4.8V for high. Some substitutes (MM74HCU04M, MC74HCU04ADG) have different thresholds (0.3V-1.1V for low). Verify compatibility with your signal source voltage levels before substitution.

Q: Is the 74HCU04D,653 from NXP Semiconductors a suitable substitute?

A: The provided data for 74HCU04D,653 lacks complete electrical specifications (voltage supply, current ratings, propagation delay, operating temperature). Insufficient information is available to confirm substitution eligibility. Contact the supplier for complete technical specifications before use.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message