MC74ACT05NG Equivalent & Substitute Parts

Part Overview

The MC74ACT05NG is a 6-channel inverter IC with open drain outputs in a 14-pin DIP package, manufactured by onsemi. This logic component operates at 4.5V to 5.5V supply voltage and features a maximum propagation delay of 8.5ns at 5V with 50pF load. The product is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

MC74ACT05NG

onsemiIn Stock: 1147MC74ACT05NG Datasheet

Current PartRFQ

CD74ACT05E

Harris CorporationIn Stock: 1847CD74ACT05E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC74ACT05NG is determined by the following critical parameters:

• Logic type and function: 6-channel inverter with open drain output
• Electrical specifications: 4.5V to 5.5V supply voltage, 4 µA maximum quiescent current, 24mA maximum output low current
• Input logic levels: 0.8V low threshold, 2V high threshold
• Propagation delay performance: Maximum 8.5ns at 5V with 50pF load
• Package compatibility: 14-pin DIP through-hole mounting
• Base product series: 74ACT05

The CD74ACT05E from Harris Corporation meets all these substitution criteria, maintaining identical logic configuration, electrical performance within acceptable margins, and physical package compatibility.

Parameter Comparison

Engineering Selection Recommendations

The CD74ACT05E serves as a direct functional equivalent to the MC74ACT05NG. Both parts are classified as obsolete products within the 74ACT05 logic family. The CD74ACT05E demonstrates extended operating temperature range (-55°C to 125°C versus -40°C to 85°C) and slightly higher propagation delay (10.8ns versus 8.5ns), both acceptable variations for most applications requiring 74ACT05 functionality.

The CD74ACT05E is RoHS non-compliant, which may impact procurement decisions in regulated environments. The MC74ACT05NG carries REACH Unaffected status. Both parts share identical electrical specifications for supply voltage, quiescent current, output current, and input logic levels, ensuring pin-for-pin compatibility in 14-DIP through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT05E directly replace the MC74ACT05NG in existing designs?

A: Yes. Both parts are 14-DIP through-hole packages with identical pin configurations, logic function, supply voltage range (4.5V to 5.5V), quiescent current (4 µA max), output current (24mA max), and input logic thresholds (0.8V low, 2V high). The CD74ACT05E propagation delay of 10.8ns is within acceptable tolerance for most applications using the 8.5ns specification.

Q: What are the differences between these two parts?

A: The CD74ACT05E operates across a wider temperature range (-55°C to 125°C) compared to the MC74ACT05NG (-40°C to 85°C). The CD74ACT05E exhibits slightly higher propagation delay (10.8ns versus 8.5ns at 5V, 50pF load). The CD74ACT05E is RoHS non-compliant, while the MC74ACT05NG is REACH Unaffected.

Q: Are there any package compatibility concerns?

A: No. Both parts use identical 14-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical compatibility on standard PCB layouts designed for 14-pin DIP components.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. The CD74ACT05E offers extended temperature range suitable for industrial environments. The MC74ACT05NG provides faster propagation delay for timing-critical applications. Both are obsolete products; availability should be verified with component suppliers before design commitment.

Q: Do these parts require different supply voltage configurations?

A: No. Both parts operate identically within the 4.5V to 5.5V supply voltage range and share identical quiescent current specifications (4 µA maximum).