SN74ACT564DW Equivalent & Substitute Parts

Part Overview

The SN74ACT564DW is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit positive edge triggering in a 20-SOIC surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. Substitute parts must maintain compatibility across electrical specifications, package dimensions, and operational characteristics to ensure direct replacement capability in existing designs.

Substiute Parts

SN74ACT564DW

Texas InstrumentsIn Stock: 1756SN74ACT564DW Datasheet

Current PartRFQ

SN74ACT564DWR

Texas InstrumentsIn Stock: 1165SN74ACT564DWR Datasheet

DirectRFQ

MC74ACT374DWG

onsemiIn Stock: 2288MC74ACT374DWG Datasheet

MFR RecommendedRFQ

MC74ACT374DWR2G

onsemiIn Stock: 1886MC74ACT374DWR2G Datasheet

MFR RecommendedRFQ

MC74ACT377DWG

onsemiIn Stock: 794MC74ACT377DWG Datasheet

MFR RecommendedRFQ

MC74ACT377DWR2G

onsemiIn Stock: 2424MC74ACT377DWR2G Datasheet

MFR RecommendedRFQ

MC74ACT564DWR2G

onsemiIn Stock: 677MC74ACT564DWR2G Datasheet

MFR RecommendedRFQ

MC74ACT574DWG

onsemiIn Stock: 2128MC74ACT574DWG Datasheet

MFR RecommendedRFQ

MC74ACT574DWR2G

onsemiIn Stock: 2111MC74ACT574DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74ACT564DW are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Package / Case: 20-SOIC (0.295", 7.50mm Width) — ensures mechanical and electrical compatibility
• Mounting Type: Surface Mount — maintains PCB assembly compatibility
• Series: 74ACT — preserves logic family compatibility
• Type: D-Type Flip Flop — maintains functional architecture
• Number of Elements: 1 — ensures single-element configuration
• Number of Bits per Element: 8 — preserves 8-bit data width
• Voltage Supply Range: 4.5V – 5.5V — maintains power supply compatibility
• Trigger Type: Positive Edge — ensures clock edge compatibility
• Current Output High/Low: 24 mA / 24 mA — preserves drive capability

Secondary Compatibility Parameters:

• Output Type: Tri-State, Inverted (primary) or Tri-State, Non-Inverted (functional alternative)
• Clock Frequency: 90 MHz or higher (backward compatible)
• Max Propagation Delay: 10.5 ns or lower (backward compatible)
• Operating Temperature: -40°C to +85°C (standard industrial range)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitutes are classified into two categories: direct packaging equivalents (same packaging format) and functional alternatives (different output logic or performance characteristics).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

SN74ACT564DWR is the direct equivalent to SN74ACT564DW, differing only in packaging format (Tape & Reel versus Tube). Both are manufactured by Texas Instruments, maintain identical electrical specifications, and are ROHS3 compliant. SN74ACT564DWR is currently Active in product status, making it the preferred choice for new designs or immediate replacement requirements.

Functional Alternatives with Output Logic Differences:

MC74ACT374DWR2G and MC74ACT574DWR2G are functionally compatible alternatives manufactured by onsemi. Both maintain the 20-SOIC package, 8-bit configuration, and tri-state output capability. Key differences include non-inverted output logic (versus inverted on the original part) and improved clock frequency specifications (160 MHz and 100 MHz respectively, compared to 90 MHz). These parts are Active in product status and ROHS3 compliant. Circuit design must account for inverted versus non-inverted output logic when implementing these substitutes.

Functional Alternatives with Output Configuration Differences:

MC74ACT377DWR2G is a non-tri-state alternative with non-inverted output logic. While maintaining the 20-SOIC package and 8-bit configuration, this part lacks tri-state output capability. This substitute is suitable only for designs that do not require tri-state output functionality. Product status is Active and ROHS3 compliant.

Obsolete Parts (Not Recommended):

MC74ACT564DWR2G and MC74ACT377DWG are marked as Obsolete and should not be selected for new designs or long-term production requirements.

Moisture Sensitivity Consideration:

The original SN74ACT564DW carries MSL Rating 1 (Unlimited), while all substitute parts carry MSL Rating 3 (168 Hours). This indicates stricter moisture handling requirements for substitute parts during storage and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT564DWR directly replace SN74ACT564DW without circuit modifications?

A: Yes. SN74ACT564DWR is electrically and mechanically identical to SN74ACT564DW. The only difference is packaging format (Tape & Reel versus Tube). No circuit modifications are required.

Q: What is the difference between inverted and non-inverted output types?

A: Inverted output (SN74ACT564DW) produces logic levels opposite to the input state. Non-inverted output (MC74ACT374DWR2G, MC74ACT574DWR2G) produces logic levels matching the input state. Circuit design must account for this difference when substituting parts with different output logic.

Q: Are MC74ACT374DWR2G and MC74ACT574DWR2G interchangeable with SN74ACT564DW?

A: These parts are functionally compatible but not pin-for-pin identical due to output logic differences (non-inverted versus inverted). Circuit design modifications are required. Both maintain the same 20-SOIC package, 8-bit configuration, and tri-state output capability.

Q: Why do substitute parts have higher quiescent current (8 µA versus 4 µA)?

A: Quiescent current differences reflect manufacturing process variations between Texas Instruments and onsemi. The 8 µA specification remains within acceptable limits for most applications and does not indicate functional incompatibility.

Q: What does MSL Rating 3 (168 Hours) mean for substitute parts?

A: MSL Rating 3 indicates the part must be used within 168 hours of package opening in standard humidity conditions. Longer storage requires controlled humidity environments or baking procedures. Original SN74ACT564DW carries MSL Rating 1 (Unlimited), requiring no special moisture handling.

Q: Can I use MC74ACT377DWR2G as a substitute?

A: MC74ACT377DWR2G is compatible only if your circuit does not require tri-state output functionality. This part provides non-inverted, non-tri-state output, making it unsuitable for designs dependent on tri-state capability.

Q: Which substitute offers the best performance improvement?

A: MC74ACT374DWR2G provides the highest clock frequency (160 MHz versus 90 MHz) and fastest propagation delay (10 ns versus 10.5 ns). However, output logic is non-inverted, requiring circuit design modifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the regulatory compliance of the original SN74ACT564DW.