SN74ACT74DE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT74DE4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The device provides two independent D-type flip-flops with Set and Reset functions, operating at a maximum clock frequency of 210 MHz with complementary outputs.

Substiute Parts

SN74ACT74DE4

Texas InstrumentsIn Stock: 1187SN74ACT74DE4 Datasheet

Current PartRFQ

SN74ACT74DR

Texas InstrumentsIn Stock: 2228SN74ACT74DR Datasheet

DirectRFQ

MC74ACT74DR2G

onsemiIn Stock: 6226MC74ACT74DR2G Datasheet

DirectRFQ

SN74ACT74D

Texas InstrumentsIn Stock: 3013SN74ACT74D Datasheet

MFR RecommendedRFQ

MC74ACT74DG

onsemiIn Stock: 2049MC74ACT74DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ACT74DE4 is determined by strict equivalence in the following parameters:

• Base Product Number: All substitutes must be 74ACT74 series devices
• Package Type: All substitutes must use 14-SOIC (0.154", 3.90mm Width) surface mount packaging
• Functional Characteristics: D-Type flip-flop with 2 elements, 1 bit per element, complementary outputs, Set/Reset function
• Electrical Specifications: Clock frequency 210 MHz, supply voltage 4.5V ~ 5.5V, operating temperature -40°C ~ 85°C
• Compliance: ROHS3 compliant, MSL 1 rating

The following parts meet these substitution criteria and are available as direct replacements:

1. SN74ACT74DR (Texas Instruments) - Direct substitute, active product status
2. MC74ACT74DR2G (onsemi) - Direct substitute, active product status
3. SN74ACT74D (Texas Instruments) - Manufacturer recommended substitute, discontinued at DiGi Electronics
4. MC74ACT74DG (onsemi) - Manufacturer recommended substitute, active product status

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74ACT74DR

The SN74ACT74DR is the preferred substitute for the discontinued SN74ACT74DE4. Both are Texas Instruments products with identical electrical specifications and packaging. The SN74ACT74DR maintains active product status and is available in higher inventory quantities (2200 pcs). This part offers improved propagation delay performance (7.5ns versus 11ns) while maintaining full electrical and thermal compatibility.

Secondary Recommendation: MC74ACT74DG

The MC74ACT74DG from onsemi is an active product alternative that meets all functional and electrical requirements. This part is suitable for applications where Texas Instruments sourcing is constrained. The onsemi device exhibits slightly higher quiescent current (4 µA versus 2 µA) and input capacitance (4.5 pF versus 3 pF), which remain within acceptable operating margins for standard 74ACT74 applications.

Alternative: MC74ACT74DR2G

The MC74ACT74DR2G provides equivalent functionality with onsemi manufacturing. This variant is available in Tape & Reel packaging and maintains the same electrical performance as the MC74ACT74DG with identical quiescent current and input capacitance specifications.

Discontinued Alternative: SN74ACT74D

The SN74ACT74D is a Texas Instruments product with manufacturer recommendation status but is discontinued at DiGi Electronics. This part should be selected only when existing inventory is available and active product alternatives are unavailable.

Frequently Asked Questions (FAQ)

Q: Can I use SN74ACT74DR as a direct replacement for SN74ACT74DE4?

A: Yes. Both parts are Texas Instruments 74ACT74 devices in 14-SOIC packaging with identical functional specifications, supply voltage range, operating temperature range, and output drive capabilities. The SN74ACT74DR offers improved propagation delay performance.

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

A: Both manufacturers produce functionally equivalent 74ACT74 devices that meet the same logic family specifications. The primary differences are quiescent current (2 µA for Texas Instruments versus 4 µA for onsemi) and input capacitance (3 pF versus 4.5 pF). These variations remain within acceptable operating parameters for standard 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, ensuring direct PCB compatibility without layout modifications.

Q: Does packaging format (Cut Tape, Tape & Reel, Tube) affect electrical performance?

A: No. Packaging format affects only procurement and handling. The electrical and functional specifications remain identical regardless of packaging format. Selection should be based on assembly requirements and inventory management.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original SN74ACT74DE4 specifications.

Q: Which substitute should I choose if I need the lowest quiescent current?

A: Select either SN74ACT74DR or SN74ACT74D from Texas Instruments, both rated at 2 µA quiescent current. The SN74ACT74DR is preferred due to active product status and higher availability.