74HCT4075N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT4075N,652 is a 3-channel OR gate logic IC manufactured by NXP USA Inc. in a 14-DIP package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74HCT series provides CMOS logic functionality with TTL-compatible input/output levels, suitable for digital logic applications requiring OR gate operations across three independent channels.

Substiute Parts

74HCT4075N,652

NXP USA Inc.In Stock: 99774HCT4075N,652 Datasheet

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CD74HCT4075E

Harris CorporationIn Stock: 23333CD74HCT4075E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT4075N,652 is determined by the following critical parameters:

• Logic Function: OR gate with 3 channels and 3 inputs per channel
• Voltage Supply Range: 4.5V ~ 5.5V
• Input/Output Logic Levels: TTL-compatible thresholds (0.8V low, 2V high)
• Propagation Delay: 24ns @ 4.5V, 50pF
• Package Type: 14-DIP through-hole mounting
• Quiescent Current: 2 µA maximum
• Output Drive Current: 4mA high and low

The CD74HCT4075E qualifies as a direct substitute based on matching all functional and electrical parameters within the 74HCT logic family. Both parts share identical logic specifications, supply voltage requirements, and propagation delay characteristics. Package compatibility is maintained through the 14-DIP form factor.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT4075E manufactured by Harris Corporation is a direct functional equivalent to the 74HCT4075N,652. Both parts are classified as obsolete and share identical electrical specifications across all critical parameters including logic function, supply voltage, propagation delay, and output drive characteristics.

Selection between these parts should consider the following factors:

RoHS Compliance: The 74HCT4075N,652 is ROHS3 compliant, while the CD74HCT4075E is RoHS non-compliant. Applications subject to RoHS regulations must use the NXP part or identify alternative modern logic gate solutions.

Operating Temperature Range: The CD74HCT4075E supports an extended lower temperature range (-55°C vs. -40°C). Applications requiring operation below -40°C must use the Harris part.

Packaging: Both parts use identical 14-DIP through-hole packaging, ensuring mechanical and electrical compatibility on PCB layouts designed for either component.

Availability: Inventory levels differ between manufacturers. The CD74HCT4075E shows significantly higher stock availability (23,242 pcs) compared to the 74HCT4075N,652 (903 pcs).

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT4075E replace the 74HCT4075N,652 in all applications?

A: The CD74HCT4075E is electrically and functionally equivalent for applications operating within the -40°C to 125°C temperature range. Applications requiring RoHS compliance must use the 74HCT4075N,652. Applications requiring operation below -40°C must use the CD74HCT4075E.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the 74HCT4075N,652 and CD74HCT4075E use the 14-DIP package with 0.300" (7.62mm) spacing. PCB footprints and through-hole mounting are directly compatible.

Q: What is the significance of the obsolete product status?

A: Both parts are classified as obsolete, indicating they are no longer in active production. Procurement should prioritize available inventory. For new designs, consider modern logic gate alternatives from current product lines.

Q: How do the propagation delay specifications compare?

A: Both parts specify identical propagation delay of 24ns at 4.5V with 50pF load. Timing-critical applications can use either part interchangeably within the specified electrical parameters.

Q: What are the key electrical parameters that determine substitutability?

A: Substitutability is determined by matching logic function (3-channel OR gate), supply voltage range (4.5V ~ 5.5V), input/output logic levels (TTL-compatible), propagation delay (24ns), quiescent current (2 µA), and output drive current (4mA). Both parts meet all these criteria.