74HCT32N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT32N,652 is a 4-channel 2-input OR Gate logic integrated circuit manufactured by NXP USA Inc. in a 14-DIP through-hole package. This component is classified as obsolete, with 12,400 units currently in stock. The part operates within the 74HCT logic family standard, providing basic OR gate functionality for digital logic applications. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, procurement flexibility, and long-term supply chain management.

Substiute Parts

74HCT32N,652

NXP USA Inc.In Stock: 1243074HCT32N,652 Datasheet

Current PartRFQ

CD74HCT32E

Harris CorporationIn Stock: 2264CD74HCT32E Datasheet

DirectRFQ

74HCT32D,653

NXP SemiconductorsIn Stock: 3845074HCT32D,653 Datasheet

MFR RecommendedRFQ

SN74HCT32N

Texas InstrumentsIn Stock: 2494SN74HCT32N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCT32N,652 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Functional Equivalence Criteria:

• Logic Type: OR Gate
• Number of Circuits: 4
• Number of Inputs: 2
• Voltage Supply Range: 4.5V ~ 5.5V
• Input/Output Logic Levels: Matching thresholds
• Propagation Delay: Within acceptable performance envelope

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Pin configuration: Identical to base product number 74HCT32

Compliance Criteria:

• RoHS and REACH compliance status
• Moisture Sensitivity Level
• Product availability and status

All substitute parts listed below meet these criteria and are drawn from the 74HCT32 base product family across multiple manufacturers.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HCT32N (Texas Instruments)

The SN74HCT32N is the preferred substitute for new designs and procurement. It maintains active product status, ensuring long-term availability and manufacturer support. This part is ROHS3 compliant and meets all functional and mechanical requirements of the 74HCT32N,652. The propagation delay of 22ns at 5.5V is superior to the original specification, providing improved performance margins. Operating temperature range of -40°C to 85°C covers standard industrial applications.

Secondary Recommendation: 74HCT32D,653 (NXP Semiconductors)

The 74HCT32D,653 is an active NXP product offering the highest inventory availability (38,349 units). As a product from the original manufacturer, it ensures design continuity and compatibility. This option is suitable for applications requiring bulk quantities and long-term supply assurance.

Alternative Option: CD74HCT32E (Harris Corporation)

The CD74HCT32E provides functional equivalence with identical electrical specifications to the original part. However, this substitute is obsolete and RoHS non-compliant, making it suitable only for legacy system maintenance or applications where RoHS compliance is not required. Inventory is limited to 2,200 units.

Not Recommended for New Designs:

The original 74HCT32N,652 is obsolete. While 12,400 units remain in stock, new designs should transition to active products (SN74HCT32N or 74HCT32D,653) to ensure supply chain continuity beyond current inventory depletion.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HCT32N as a direct replacement for 74HCT32N,652?

A: Yes. The SN74HCT32N is a direct functional and mechanical substitute. Both parts share identical logic configuration (4-channel 2-input OR gate), voltage supply range (4.5V ~ 5.5V), input/output logic levels, and 14-DIP package dimensions. The SN74HCT32N offers superior propagation delay performance (22ns vs. 24ns) and maintains active product status.

Q: What is the difference between the packaging options (Tube, Bulk)?

A: Packaging refers to the quantity and container format for procurement. Tube packaging typically contains smaller quantities suitable for component-level orders, while Bulk packaging accommodates larger volume purchases. Electrical and functional specifications remain identical regardless of packaging format.

Q: Is the CD74HCT32E suitable for new product designs?

A: The CD74HCT32E is not recommended for new designs. Although functionally equivalent, it is obsolete and RoHS non-compliant. Use this substitute only for legacy system repairs or applications where RoHS compliance is not a requirement.

Q: Why does the SN74HCT32N have a narrower operating temperature range (-40°C to 85°C) compared to the original (-40°C to 125°C)?

A: Operating temperature range is a manufacturer specification that reflects the tested and guaranteed performance envelope. The SN74HCT32N's range covers standard industrial and commercial applications. If extended temperature operation beyond 85°C is required, verify application requirements against the original 74HCT32N,652 specifications or consult the Texas Instruments datasheet.

Q: Are all substitute parts ROHS3 compliant?

A: No. The SN74HCT32N and 74HCT32N,652 are ROHS3 compliant. The CD74HCT32E is RoHS non-compliant. The 74HCT32D,653 compliance status is not specified in available data. Verify RoHS compliance requirements for your application before final part selection.

Q: Can I mix different manufacturers' parts in the same circuit board?

A: Yes. All substitute parts meet identical functional and mechanical specifications for the 74HCT32 logic gate. Mixing manufacturers (NXP, Texas Instruments, Harris) in the same design is electrically valid. However, for manufacturing consistency and traceability, single-source procurement is recommended where possible.

Q: What is the Moisture Sensitivity Level (MSL), and why does it matter?

A: MSL indicates the component's sensitivity to moisture absorption during storage and handling. MSL 1 (Unlimited) means the part has no moisture sensitivity restrictions and requires no special storage conditions. This applies to the 74HCT32N,652 and CD74HCT32E, simplifying inventory management and reducing handling costs.