CD74ACT02EG4 Equivalent & Substitute Parts

Part Overview

The CD74ACT02EG4 is a 4-channel NOR gate logic integrated circuit manufactured by Texas Instruments, housed in a 14-pin DIP package. This component is discontinued at DiGi Electronics and classified as a legacy logic device. Finding equivalent and substitute parts is necessary due to product discontinuation and the need for continued supply chain access for maintenance, repair, and legacy system support.

Substiute Parts

CD74ACT02EG4

Texas InstrumentsIn Stock: 1284CD74ACT02EG4 Datasheet

Current PartRFQ

CD74ACT02E

Harris CorporationIn Stock: 5584CD74ACT02E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74ACT02EG4 is determined by strict equivalence across the following critical parameters:

• Logic configuration: 4-channel NOR gate with 2 inputs per channel
• Electrical specifications: 4.5V to 5.5V supply voltage, 24mA output current capability, 12.2ns maximum propagation delay at 5V with 50pF load
• Thermal range: -55°C to 125°C operating temperature
• Physical form factor: 14-pin DIP package with 0.300" (7.62mm) pitch
• Base product series: 74ACT02

The CD74ACT02E from Harris Corporation meets all these criteria and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The CD74ACT02E is a direct functional equivalent to the CD74ACT02EG4. Both parts share identical electrical characteristics, logic configuration, and physical packaging. Selection between these parts depends on regulatory and compliance requirements:

For applications requiring RoHS3 compliance, the CD74ACT02EG4 is the appropriate choice, though it is currently discontinued at DiGi Electronics. For legacy system maintenance where RoHS compliance is not mandated, the CD74ACT02E from Harris Corporation provides functional equivalence with available inventory.

Both parts operate within the same voltage range, deliver identical output current, and maintain the same propagation delay specifications. The 14-DIP through-hole package ensures mechanical and electrical compatibility in existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT02E replace the CD74ACT02EG4 in my circuit?

A: Yes. The CD74ACT02E is electrically and functionally equivalent. Both parts are 4-channel NOR gates with identical supply voltage (4.5V–5.5V), output current (24mA), propagation delay (12.2ns @ 5V, 50pF), and operating temperature range (-55°C to 125°C). The 14-DIP package dimensions are identical, ensuring direct PCB compatibility.

Q: What is the difference between these two parts?

A: The primary differences are manufacturer (Texas Instruments vs. Harris Corporation), product status (discontinued vs. obsolete), and RoHS compliance (ROHS3 compliant vs. non-compliant). Functionally and electrically, they are equivalent.

Q: Does the packaging difference matter?

A: The CD74ACT02EG4 is supplied in standard packaging, while the CD74ACT02E is supplied in tube packaging. Both use the same 14-DIP (0.300", 7.62mm) case. Tube packaging affects handling and storage but does not impact electrical performance or PCB mounting.

Q: Are there any compatibility concerns with the 74ACT02 base product number?

A: No. Both parts share the 74ACT02 base product number, confirming they are part of the same logic family with identical functional specifications. This designation ensures compatibility across the 74ACT series ecosystem.

Q: Which part should I select for new designs?

A: Selection depends on compliance requirements. For RoHS3-compliant applications, source the CD74ACT02EG4 if available. For applications without RoHS mandates, the CD74ACT02E provides equivalent functionality with current inventory availability.