DM74ALS564AN Equivalent & Substitute Parts

Part Overview

The DM74ALS564AN is a Flip Flop 1 Element D-Type 8 Bit Positive Edge logic integrated circuit manufactured by onsemi in a 20-DIP (0.300", 7.62mm) through-hole package. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates within the 74ALS logic family standard, providing tri-state, non-inverted output configuration suitable for digital logic applications requiring edge-triggered data capture and storage.

Substiute Parts

DM74ALS564AN

onsemiIn Stock: 960DM74ALS564AN Datasheet

Current PartRFQ

SN74ALS564BN

Texas InstrumentsIn Stock: 2285SN74ALS564BN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM74ALS564AN is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Logic Family: 74ALS
• Type: D-Type Flip Flop
• Number of Elements: 1
• Number of Bits per Element: 8
• Trigger Type: Positive Edge
• Clock Frequency: 30 MHz (minimum)
• Max Propagation Delay: 14 ns @ 5V, 50pF (maximum)
• Voltage Supply Range: 4.5V ~ 5.5V
• Current Ratings: Output High 2.6 mA, Output Low 24 mA
• Quiescent Current: 18 mA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Allowable Variation:

• Output Type: Tri-State configuration (inverted or non-inverted output acceptable based on circuit design requirements)
• Manufacturer: Different manufacturers within 74ALS family
• Product Status: Active status preferred for new designs and ongoing availability
• Packaging Format: Tube or alternative standard packaging acceptable

The SN74ALS564BN from Texas Instruments meets all mandatory parameters and represents a direct functional substitute with improved product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS564BN from Texas Instruments is a direct functional equivalent to the DM74ALS564AN. Selection between these parts should be based on the following engineering criteria:

For Obsolete Component Replacement: The DM74ALS564AN's Obsolete status creates supply chain risk. The SN74ALS564BN's Active product status ensures continued availability, documented support, and compliance with current manufacturing standards. Texas Instruments maintains active production and distribution channels for this component.

For Compliance and Certification: The SN74ALS564BN carries ROHS3 Compliant certification, meeting current environmental and regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 export classification.

Output Configuration Consideration: The primary electrical difference is output polarity: DM74ALS564AN provides non-inverted tri-state output, while SN74ALS564BN provides inverted tri-state output. Circuit design must accommodate this output inversion through appropriate logic gating or signal conditioning if direct pin-for-pin substitution is required.

Packaging and Mounting: Both parts utilize identical 20-DIP (0.300", 7.62mm) through-hole packaging, enabling direct mechanical substitution on existing PCB layouts without modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS564BN replace the DM74ALS564AN in existing designs?

A: Yes, the SN74ALS564BN is electrically and mechanically compatible. The inverted output configuration of the SN74ALS564BN requires circuit design verification to ensure output polarity matches system requirements. If non-inverted output is mandatory, additional logic gating may be necessary.

Q: What is the primary reason to substitute the DM74ALS564AN?

A: The DM74ALS564AN is classified as Obsolete, creating supply availability and long-term support concerns. The SN74ALS564BN maintains Active product status with established manufacturing and distribution infrastructure.

Q: Are the timing specifications identical between these parts?

A: Yes. Both parts specify 30 MHz clock frequency and 14 ns maximum propagation delay at 5V with 50 pF load. Timing performance is equivalent across all specified operating conditions.

Q: Do these parts require different power supply configurations?

A: No. Both parts operate within the identical 4.5V to 5.5V supply voltage range with matching quiescent current specifications of 18 mA.

Q: Can these parts be used interchangeably in high-speed applications?

A: Both parts support 30 MHz operation with 14 ns propagation delay. Application-specific timing analysis is required to confirm suitability for particular high-speed requirements. Output polarity differences must be evaluated within the complete system context.

Q: What packaging options are available for the SN74ALS564BN?

A: The SN74ALS564BN is supplied in Tube packaging format. The 20-DIP (0.300", 7.62mm) through-hole package remains consistent with the original DM74ALS564AN specification.

Q: Are there environmental or compliance differences between these parts?

A: The SN74ALS564BN carries ROHS3 Compliant certification, meeting current environmental standards. Both parts maintain REACH Unaffected status. For new designs, the SN74ALS564BN's compliance certifications align with current regulatory requirements.