74ACT11074DRG4 Equivalent & Substitute Parts

Part Overview

The 74ACT11074DRG4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This component functions as a 2-element D-type flip-flop with complementary outputs, set/preset and reset capabilities, and positive edge triggering. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and maintenance applications.

Substiute Parts

74ACT11074DRG4

Texas InstrumentsIn Stock: 111174ACT11074DRG4 Datasheet

Current PartRFQ

74AC11074DR

Texas InstrumentsIn Stock: 149474AC11074DR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 74AC11074DR qualifies as a direct substitute for the 74ACT11074DRG4 based on the following substitution criteria:

Functional Equivalence: Both parts implement identical D-type flip-flop logic with 2 elements, 1 bit per element, complementary outputs, and positive edge triggering.

Package Compatibility: Both use the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical pin compatibility.

Electrical Parameter Alignment: The substitute part meets or exceeds the critical electrical specifications of the original part:

• Voltage supply range (3V ~ 5.5V) encompasses the original specification (4.5V ~ 5.5V)
• Propagation delay (7.5 ns) is superior to the original (8.5 ns)
• Output current ratings (24mA / 24mA) are identical
• Quiescent current (4 µA) is identical
• Input capacitance (4.6 pF) is identical
• Operating temperature range (-40°C ~ 85°C) is identical

Compliance Status: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, ensuring regulatory continuity.

Product Status Advantage: The substitute part is active, providing long-term availability and supply chain stability compared to the obsolete original.

Parameter Comparison

Engineering Selection Recommendations

The 74AC11074DR is the appropriate substitute for the 74ACT11074DRG4 based on the following engineering criteria:

Product Status: The original part is obsolete, creating supply chain risk. The substitute is active, ensuring continued availability and support from Texas Instruments.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance status and REACH unaffected designation, eliminating compliance concerns in substitution.

Certification Alignment: Both parts carry MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring equivalent handling and storage requirements.

Performance Enhancement: The substitute part delivers improved electrical performance with faster propagation delay (7.5 ns vs. 8.5 ns) and higher maximum clock frequency (150 MHz vs. 125 MHz), while maintaining identical output drive capability and quiescent current specifications.

Mechanical Compatibility: Identical 14-SOIC package geometry ensures direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 74AC11074DR replace the 74ACT11074DRG4 in existing designs?

A: Yes. Both parts share identical pin configurations, package geometry, and functional specifications. The substitute part meets or exceeds all electrical parameters of the original part.

Q: What is the difference between the 74ACT and 74AC series?

A: The 74ACT series is designed for TTL input compatibility, while the 74AC series operates across a wider voltage supply range (3V ~ 5.5V vs. 4.5V ~ 5.5V). Both implement identical D-type flip-flop logic and are functionally equivalent when operated within overlapping voltage specifications.

Q: Are there any packaging differences between these parts?

A: No. Both parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package with identical pin assignments and mechanical dimensions.

Q: Why is the original part listed as obsolete?

A: The 74ACT11074DRG4 has been discontinued by Texas Instruments. The 74AC11074DR remains in active production and is the recommended alternative for new designs and production continuity.

Q: Does the substitute part require different handling or storage?

A: No. Both parts carry identical MSL Level 1 (Unlimited) moisture sensitivity ratings, requiring the same handling and storage protocols.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution is determined by matching D-type flip-flop function, complementary output configuration, positive edge triggering, identical pin count and package, overlapping voltage supply ranges, and equivalent or superior propagation delay specifications.