74ACT11074DR Equivalent & Substitute Parts

Part Overview

The 74ACT11074DR 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 74ACT11074DR is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain functional equivalence through matching logic type, package form factor, and electrical operating parameters.

Substiute Parts

74ACT11074DR

Texas InstrumentsIn Stock: 109874ACT11074DR Datasheet

Current PartRFQ

74AC11074DR

Texas InstrumentsIn Stock: 149474AC11074DR Datasheet

DirectRFQ

MC74ACT74DG

onsemiIn Stock: 2049MC74ACT74DG Datasheet

MFR RecommendedRFQ

MC74ACT74DR2G

onsemiIn Stock: 6226MC74ACT74DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT11074DR is determined by the following critical parameters:

• Logic Function: D-type flip-flop with 2 elements, 1 bit per element, complementary outputs, set/preset and reset capability
• Package Form Factor: 14-SOIC surface mount package (0.154", 3.90mm width)
• Trigger Type: Positive edge triggering
• Voltage Supply Compatibility: Operating range must encompass or be compatible with 4.5V ~ 5.5V
• Output Drive Capability: 24mA minimum for both high and low states
• Temperature Range: -40°C ~ 85°C operating specification
• Compliance: RoHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories: direct functional equivalents from alternative manufacturers and active-status alternatives that maintain electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

74AC11074DR (Texas Instruments, Active Status): This part maintains the same manufacturer lineage and 14-SOIC package as the obsolete 74ACT11074DR. The 74AC series variant operates across an extended voltage supply range (3V ~ 5.5V) and delivers improved propagation delay performance (7.5ns versus 8.5ns). Both parts share identical output drive capability (24mA), quiescent current (4 µA), and operating temperature range. RoHS3 compliance and REACH unaffected status are maintained. This substitute is suitable for direct replacement in applications where the extended lower voltage threshold does not conflict with system requirements.

MC74ACT74DG (onsemi, Active Status, Tube Packaging): This onsemi-manufactured part maintains the 74ACT series designation and 14-SOIC package footprint. It delivers higher clock frequency capability (210 MHz versus 125 MHz) and is available in active production status. Packaging is supplied in tube format rather than tape and reel. Voltage supply range, output drive capability, quiescent current, and operating temperature specifications are identical to the main part. Input capacitance is slightly elevated (4.5 pF versus 4.6 pF). RoHS3 compliance and REACH unaffected status apply. This substitute accommodates applications requiring higher frequency operation and is suitable for designs where tube packaging is acceptable.

MC74ACT74DR2G (onsemi, Active Status, Tape & Reel Packaging): This onsemi-manufactured part is functionally equivalent to MC74ACT74DG but supplied in tape and reel format, matching the original packaging specification of the 74ACT11074DR. Clock frequency, propagation delay, voltage supply range, output drive capability, quiescent current, and operating temperature specifications are identical to MC74ACT74DG. RoHS3 compliance and REACH unaffected status are maintained. This substitute provides the highest frequency capability (210 MHz) with packaging continuity for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 74AC11074DR be used as a direct replacement for the 74ACT11074DR?

A: The 74AC11074DR is functionally compatible as a substitute. Both parts are D-type flip-flops in 14-SOIC packages with identical output drive capability, quiescent current, and operating temperature range. The 74AC variant operates across a wider voltage supply range (3V ~ 5.5V) and exhibits faster propagation delay (7.5ns). Compatibility depends on whether your circuit design requires the specific voltage supply range of the original part.

Q: What is the difference between the onsemi MC74ACT74DG and MC74ACT74DR2G?

A: Both parts are functionally identical onsemi D-type flip-flops with 14-SOIC packages and 210 MHz clock frequency capability. The primary difference is packaging format: MC74ACT74DG is supplied in tube packaging, while MC74ACT74DR2G is supplied in tape and reel format. Select based on your assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 74AC11074DR, MC74ACT74DG, and MC74ACT74DR2G are all RoHS3 compliant with REACH unaffected status, matching the compliance profile of the original 74ACT11074DR.

Q: What is the significance of the different clock frequency ratings?

A: Clock frequency indicates the maximum operating speed of the flip-flop. The 74ACT11074DR operates at 125 MHz, the 74AC11074DR at 150 MHz, and both onsemi parts at 210 MHz. Higher frequency capability provides design margin for timing-critical applications but does not affect compatibility in lower-frequency circuits.

Q: Does the slightly higher input capacitance of the onsemi parts affect circuit design?

A: The onsemi parts (MC74ACT74DG and MC74ACT74DR2G) have input capacitance of 4.5 pF compared to 4.6 pF for the Texas Instruments parts. This difference is minimal and does not typically affect circuit functionality in standard logic applications. Verify compatibility in high-frequency or noise-sensitive designs.

Q: Which substitute part should I select for new designs?

A: For new designs, select from the active-status parts: 74AC11074DR (Texas Instruments), MC74ACT74DG (onsemi, tube packaging), or MC74ACT74DR2G (onsemi, tape and reel). All three maintain functional equivalence and full compliance. Choose based on manufacturer preference, packaging requirements, and frequency performance needs.