74HCU04N,652 Equivalent & Substitute Parts

Part Overview

The 74HCU04N,652 is a 6-channel inverter logic IC manufactured by NXP USA Inc. in a 14-DIP through-hole package. This component performs basic logic inversion operations across six independent channels, each with a single input. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repairs, and legacy design support. Substitute parts must maintain functional equivalence through matching logic type, channel configuration, electrical performance characteristics, and physical packaging.

Substiute Parts

74HCU04N,652

NXP USA Inc.In Stock: 313874HCU04N,652 Datasheet

Current PartRFQ

CD74HCU04E

Harris CorporationIn Stock: 2541CD74HCU04E Datasheet

DirectRFQ

SN74HCU04N

Texas InstrumentsIn Stock: 3303SN74HCU04N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCU04N,652 are qualified based on the following criteria:

Functional Equivalence: All substitute parts must be 6-channel inverter logic ICs (74HCU series) with single-input configuration, ensuring identical logic operation.

Electrical Compatibility: Supply voltage range (2V ~ 6V), quiescent current (2 µA maximum), and output current specifications (5.2mA) must be maintained or exceeded. Propagation delay and input logic level thresholds determine signal timing and noise margin performance.

Physical Compatibility: All parts must use 14-DIP through-hole packaging with identical pin spacing (0.300", 7.62mm) to ensure direct socket compatibility without PCB redesign.

Thermal and Environmental Ratings: Operating temperature range must support the application's thermal requirements. Parts with extended or equivalent temperature ranges are acceptable.

The following parts meet these substitution criteria:

• CD74HCU04E (Harris Corporation)
• SN74HCU04N (Texas Instruments)

Parameter Comparison

Engineering Selection Recommendations

SN74HCU04N (Texas Instruments) is the preferred substitute for new designs and ongoing production. This part maintains active product status, ensuring long-term availability and supply chain stability. It is ROHS3 compliant and carries REACH Unaffected certification, meeting modern environmental and regulatory requirements. The SN74HCU04N operates within the -40°C ~ 85°C temperature range, which covers standard industrial and commercial applications. Propagation delay of 14ns at 6V and 50pF load is marginally higher than the original part but remains within acceptable performance parameters for most inverter logic applications.

CD74HCU04E (Harris Corporation) is an alternative substitute for legacy system maintenance where the extended operating temperature range (-55°C ~ 125°C) is required. This part is obsolete and RoHS non-compliant, making it suitable only for repair and replacement of existing systems that cannot be redesigned. The CD74HCU04E maintains identical propagation delay (12ns) and electrical specifications to the original 74HCU04N,652.

Both substitute parts are electrically and physically compatible with the original 74HCU04N,652 and require no PCB modifications for direct replacement in 14-DIP through-hole sockets.

Frequently Asked Questions (FAQ)

Q: Can the SN74HCU04N directly replace the 74HCU04N,652 without PCB modifications?

A: Yes. Both parts use identical 14-DIP through-hole packaging with 0.300" (7.62mm) pin spacing. Direct socket substitution is possible without PCB redesign.

Q: What is the difference in propagation delay between the original and substitute parts?

A: The 74HCU04N,652 and CD74HCU04E both specify 12ns maximum propagation delay at 6V with 50pF load. The SN74HCU04N specifies 14ns under the same conditions. This 2ns difference is negligible for most logic applications and does not affect functional compatibility.

Q: Why is the SN74HCU04N recommended over the CD74HCU04E?

A: The SN74HCU04N has active product status, ensuring continued availability and supply chain support. It is also ROHS3 compliant and REACH Unaffected, meeting current environmental regulations. The CD74HCU04E is obsolete and RoHS non-compliant, limiting its use to legacy system repairs.

Q: Are there temperature range limitations when substituting the SN74HCU04N?

A: The SN74HCU04N operates from -40°C ~ 85°C, which is narrower than the original part's -40°C ~ 125°C range. Applications requiring operation above 85°C must use the CD74HCU04E (-55°C ~ 125°C) or verify that the SN74HCU04N's upper limit meets system requirements.

Q: Do input logic level thresholds differ between substitute parts?

A: Minor variations exist. The 74HCU04N,652 specifies low input logic level at 0.3V ~ 1.2V, while the SN74HCU04N specifies 0.5V ~ 1.8V. The CD74HCU04E specifies 0.3V ~ 1.1V. These differences are within standard CMOS logic tolerances and do not affect compatibility in typical applications.

Q: What compliance certifications apply to each part?

A: The 74HCU04N,652 and SN74HCU04N are ROHS3 compliant and REACH Unaffected. The CD74HCU04E is RoHS non-compliant and should be used only in legacy system repairs where regulatory compliance is not required.