74AC11074D Equivalent & Substitute Parts

Part Overview

The 74AC11074D is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component functions as a 2-element D-type flip-flop with complementary outputs, positive edge triggering, and set/reset capability. The device is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for applications requiring this logic function.

Substiute Parts

74AC11074D

Texas InstrumentsIn Stock: 98174AC11074D Datasheet

Current PartRFQ

74AC11074DR

Texas InstrumentsIn Stock: 149474AC11074DR Datasheet

MFR RecommendedRFQ

MC74AC74DG

onsemiIn Stock: 2540MC74AC74DG Datasheet

MFR RecommendedRFQ

MC74AC74DR2G

onsemiIn Stock: 2964MC74AC74DR2G Datasheet

MFR RecommendedRFQ

NLV74AC74DR2G

onsemiIn Stock: 3631NLV74AC74DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AC11074D is determined by strict equivalence across the following critical parameters:

• Functional Architecture: Dual D-type flip-flop with 2 elements, 1 bit per element, complementary outputs, positive edge triggering, and set/reset function
• Package Compatibility: 14-SOIC (0.154", 3.90mm Width) surface mount package
• Electrical Specifications: Supply voltage range, output current capability, propagation delay, and quiescent current
• Environmental Compliance: RoHS3 compliance, MSL rating, and operating temperature range

Substitute parts must maintain functional equivalence within the 74AC logic family while accommodating minor variations in electrical performance parameters that remain within acceptable design margins.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 74AC11074DR (Texas Instruments)

The 74AC11074DR is the manufacturer-recommended substitute for the 74AC11074D. Both parts share identical electrical specifications, including 150 MHz clock frequency, 7.5ns propagation delay, and 4 µA quiescent current. The primary difference is packaging format: the 74AC11074DR is supplied in Tape & Reel (TR) format versus Tube for the original part. Both maintain Active product status or equivalent availability. This substitute is preferred for direct functional replacement with no design modifications required.

Secondary Substitutes: MC74AC74DG and MC74AC74DR2G (onsemi)

The onsemi MC74AC74DG and MC74AC74DR2G parts provide functional equivalence with minor electrical parameter variations. These devices operate at 160 MHz clock frequency (versus 150 MHz) and exhibit 10ns maximum propagation delay (versus 7.5ns). The supply voltage range is expanded to 2V ~ 6V, providing broader operating margin. Both parts maintain Active product status and ROHS3 compliance. These substitutes are suitable where the relaxed propagation delay and expanded voltage range are acceptable within design specifications.

Not Recommended: NLV74AC74DR2G (onsemi)

The NLV74AC74DR2G is classified as Obsolete and exhibits degraded electrical performance, including 12.5ns propagation delay and 40 µA quiescent current (10× higher than the original part). This part should not be selected for new designs or critical applications requiring the original performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can I use 74AC11074DR as a direct replacement for 74AC11074D?

A: Yes. The 74AC11074DR is electrically and functionally identical to the 74AC11074D. The only difference is the packaging format (Tape & Reel versus Tube). Both parts are pin-compatible, have identical electrical specifications, and require no circuit modifications.

Q: What is the difference between the Texas Instruments and onsemi substitutes?

A: Texas Instruments 74AC11074DR maintains identical electrical specifications to the original part. The onsemi MC74AC74DG and MC74AC74DR2G variants operate at slightly higher clock frequency (160 MHz) and have relaxed propagation delay (10ns versus 7.5ns) and expanded supply voltage range (2V ~ 6V versus 3V ~ 5.5V). These differences are within typical design margins for 74AC logic applications.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package. PCB layout and footprints are identical across all listed substitutes.

Q: Why is the NLV74AC74DR2G not recommended?

A: The NLV74AC74DR2G is classified as Obsolete and exhibits significantly degraded performance, including 12.5ns propagation delay and 40 µA quiescent current. These parameters deviate substantially from the original 74AC11074D specifications and may not meet timing-critical applications.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the environmental compliance profile of the original 74AC11074D.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-quantity applications. Tape & Reel (TR) packaging supplies components on continuous tape for automated pick-and-place assembly. Both formats contain identical components; the difference is in supply and handling method.