SN74ACT74PW Equivalent & Substitute Parts

Part Overview

The SN74ACT74PW is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 14-TSSOP surface mount package. This component provides two independent D-type flip-flops with set and reset functionality, operating at a maximum clock frequency of 210 MHz. The part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements. Substitute parts must maintain identical electrical characteristics and package specifications to ensure direct compatibility in existing circuit designs.

Substiute Parts

SN74ACT74PW

Texas InstrumentsIn Stock: 3149SN74ACT74PW Datasheet

Current PartRFQ

SN74ACT74PWR

Texas InstrumentsIn Stock: 3913SN74ACT74PWR Datasheet

DirectRFQ

MC74ACT74DTR2G

onsemiIn Stock: 10251MC74ACT74DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74ACT74PW are qualified based on the following critical parameters that determine functional and physical compatibility:

Electrical Compatibility Criteria:

• Type: D-Type Flip-Flop with dual elements
• Number of Elements: 2
• Number of Bits per Element: 1
• Clock Frequency: 210 MHz minimum
• Max Propagation Delay: 11 ns @ 5V, 50pF maximum
• Trigger Type: Positive Edge
• Output Type: Complementary
• Current - Output High/Low: 24 mA minimum
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)

Physical Compatibility Criteria:

• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must meet or exceed all electrical parameters and maintain identical package specifications. Packaging format (Tube, Cut Tape, or Tape & Reel) does not affect electrical compatibility but may impact procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT74PWR (Texas Instruments)

This part is the direct Texas Instruments equivalent to the SN74ACT74PW, differing only in packaging format (Cut Tape & Digi-Reel versus Tube). All electrical parameters are identical to the main part. Product status is Active, ensuring long-term availability and supply chain stability. This substitute is recommended for applications requiring continuity with the original Texas Instruments product line while maintaining identical performance characteristics.

MC74ACT74DTR2G (onsemi)

This part is a manufacturer-recommended substitute from onsemi, meeting all critical electrical specifications. Quiescent current is 4 µA (versus 2 µA for the main part) and input capacitance is 4.5 pF (versus 3 pF), both within acceptable operational margins for D-type flip-flop applications. Product status is Active, providing reliable long-term availability. This substitute is suitable for applications where cross-manufacturer sourcing is acceptable and offers alternative supply chain options.

Both substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT74PWR be used as a direct replacement for SN74ACT74PW?

A: Yes. SN74ACT74PWR is electrically identical to SN74ACT74PW. The only difference is packaging format: SN74ACT74PW is supplied in Tube packaging, while SN74ACT74PWR is supplied in Cut Tape & Digi-Reel format. Both are manufactured by Texas Instruments and meet identical electrical specifications.

Q: What are the differences between MC74ACT74DTR2G and the Texas Instruments parts?

A: MC74ACT74DTR2G is manufactured by onsemi and meets all critical electrical parameters. Quiescent current is 4 µA (compared to 2 µA for Texas Instruments parts) and input capacitance is 4.5 pF (compared to 3 pF). These differences are within acceptable operational margins for D-type flip-flop applications and do not affect functional compatibility.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tube, Cut Tape, or Tape & Reel) affects only procurement, handling, and storage procedures. Electrical performance and functional characteristics remain identical across all packaging formats for the same part number base.

Q: Are all substitute parts RoHS compliant?

A: Yes. All parts listed—SN74ACT74PW, SN74ACT74PWR, and MC74ACT74DTR2G—are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting current environmental and manufacturing standards.

Q: Can I use MC74ACT74DTR2G in a design originally specified for SN74ACT74PW?

A: Yes. MC74ACT74DTR2G meets all critical electrical specifications and operates within the same temperature range and supply voltage range. The slightly higher quiescent current and input capacitance do not affect functional compatibility in standard D-type flip-flop applications.

Q: Why is the original SN74ACT74PW discontinued?

A: Product discontinuation is determined by manufacturer production decisions. Active substitute parts (SN74ACT74PWR and MC74ACT74DTR2G) provide equivalent functionality and are recommended for new designs and ongoing production requirements.