SN74AC564PW Equivalent & Substitute Parts

Part Overview

The SN74AC564PW is a Logic category D-Type flip-flop integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit positive edge triggering in a 20-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this flip-flop architecture.

Substiute Parts

SN74AC564PW

Texas InstrumentsIn Stock: 920SN74AC564PW Datasheet

Current PartRFQ

SN74AC564PWR

Texas InstrumentsIn Stock: 2242SN74AC564PWR Datasheet

DirectRFQ

MC74AC374DTR2G

onsemiIn Stock: 3574MC74AC374DTR2G Datasheet

MFR RecommendedRFQ

MC74AC377DTG

onsemiIn Stock: 782MC74AC377DTG Datasheet

MFR RecommendedRFQ

MC74AC377DTR2G

onsemiIn Stock: 3640MC74AC377DTR2G Datasheet

MFR RecommendedRFQ

MC74AC574DTR2G

onsemiIn Stock: 17818MC74AC574DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74AC564PW are identified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Criteria:

• Series: 74AC logic family
• Type: D-Type flip-flop architecture
• Number of Elements: 1
• Number of Bits per Element: 8
• Trigger Type: Positive Edge
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• Voltage Supply Range: 2V to 6V
• Operating Temperature Range: -40°C to 85°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitution Categories:

Direct Equivalent (Packaging Variant): SN74AC564PWR differs only in packaging format (Tape & Reel vs. Tube), maintaining identical electrical specifications and active product status.

Functional Alternatives (Output Configuration Variants): MC74AC374DTR2G, MC74AC377DTG, MC74AC377DTR2G, and MC74AC574DTR2G are functionally related parts within the 74AC series that share the same core architecture but differ in output type (inverted vs. non-inverted, tri-state configuration) and performance characteristics. These parts maintain compatibility with the 20-TSSOP package and supply voltage requirements but offer different propagation delays and quiescent current specifications.

Parameter Comparison

Engineering Selection Recommendations

SN74AC564PWR is the primary direct substitute for SN74AC564PW. Both parts are manufactured by Texas Instruments, share identical electrical specifications, and maintain ROHS3 compliance and MSL 1 rating. The distinction is packaging format: SN74AC564PWR is supplied in Tape & Reel format with active product status, whereas SN74AC564PW is supplied in Tube format and is discontinued. SN74AC564PWR is recommended for new designs and ongoing production requiring the inverted tri-state output configuration.

MC74AC574DTR2G is an active substitute manufactured by onsemi. It maintains the tri-state output capability and 95 MHz clock frequency of the original part but provides non-inverted output logic. This part offers improved propagation delay (9.5 ns vs. 10.5 ns) and is available in high inventory quantities. Selection of this part requires circuit-level verification that non-inverted output logic is compatible with the application.

MC74AC377DTR2G and MC74AC377DTG are active onsemi alternatives featuring non-inverted output without tri-state capability. These parts offer higher clock frequency (140 MHz) and comparable propagation delay (10 ns). Selection requires confirmation that the absence of tri-state output does not conflict with circuit requirements.

MC74AC374DTR2G is an active onsemi alternative with the highest clock frequency (155 MHz) and fastest propagation delay (9.5 ns) among available substitutes. It features non-inverted tri-state output. This part is suitable for applications requiring enhanced speed performance.

All substitute parts maintain compliance with ROHS3 and MSL 1 specifications, ensuring regulatory and environmental compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74AC564PWR be used as a direct replacement for SN74AC564PW?

A: Yes. SN74AC564PWR is a direct electrical equivalent with identical specifications. The only difference is packaging format: SN74AC564PWR is supplied in Tape & Reel format and maintains active product status, while SN74AC564PW is supplied in Tube format and is discontinued. Both parts feature inverted tri-state output and 95 MHz clock frequency.

Q: What is the key difference between SN74AC564PW and MC74AC574DTR2G?

A: The primary difference is output logic polarity. SN74AC564PW provides inverted tri-state output, while MC74AC574DTR2G provides non-inverted tri-state output. Both maintain 95 MHz clock frequency and tri-state capability. MC74AC574DTR2G offers slightly faster propagation delay (9.5 ns vs. 10.5 ns) and is manufactured by onsemi with active product status.

Q: Are MC74AC377DTR2G and MC74AC377DTG interchangeable?

A: MC74AC377DTR2G and MC74AC377DTG are electrically identical but differ in packaging format. MC74AC377DTR2G is supplied in Tape & Reel format, while MC74AC377DTG is supplied in Tube format. Both feature non-inverted output without tri-state capability and 140 MHz clock frequency. Selection depends on packaging requirements for assembly and handling.

Q: Can I use a non-inverted output part as a substitute for the inverted output SN74AC564PW?

A: Substitution of non-inverted output parts (MC74AC574DTR2G, MC74AC377DTR2G, MC74AC377DTG, MC74AC374DTR2G) for the inverted output SN74AC564PW requires circuit-level analysis. The inverted logic must be accounted for in downstream signal processing. Direct pin-for-pin substitution without logic verification will result in inverted signal states.

Q: What is the significance of tri-state vs. non-inverted output in these parts?

A: Tri-state output allows the part to drive or release a shared bus line, enabling multiple devices to share a common signal line. Non-tri-state output continuously drives the output regardless of bus conditions. MC74AC377DTR2G and MC74AC377DTG feature non-tri-state output and are suitable only for applications where dedicated output lines are available. MC74AC564PW, SN74AC564PWR, MC74AC574DTR2G, and MC74AC374DTR2G all feature tri-state output for bus-oriented applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed—SN74AC564PW, SN74AC564PWR, MC74AC374DTR2G, MC74AC377DTG, MC74AC377DTR2G, and MC74AC574DTR2G—are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), ensuring regulatory compliance and environmental compatibility.

Q: Which substitute part offers the best performance in terms of propagation delay?

A: MC74AC374DTR2G and MC74AC574DTR2G both offer the fastest propagation delay at 9.5 ns (compared to 10.5 ns for SN74AC564PW). MC74AC374DTR2G additionally features the highest clock frequency at 155 MHz. Selection depends on whether non-inverted output logic is compatible with the application circuit.