DM74ALS564AWM Equivalent & Substitute Parts

Part Overview

The DM74ALS564AWM is a single-element D-type flip-flop logic integrated circuit with 8-bit capacity, designed for digital logic applications requiring edge-triggered data storage and tri-state output control. Manufactured by onsemi in a 20-SOIC surface mount package, this component operates at 30 MHz clock frequency with 14ns maximum propagation delay at 5V supply voltage.

The DM74ALS564AWM is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

DM74ALS564AWM

onsemiIn Stock: 1049DM74ALS564AWM Datasheet

Current PartRFQ

SN74ALS564BDW

Texas InstrumentsIn Stock: 1043SN74ALS564BDW Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS564AWM are identified based on strict equivalence across the following critical parameters:

• Logic Function: D-type flip-flop with identical element count (1) and bit capacity (8)
• Package Compatibility: 20-SOIC surface mount package with matching physical dimensions (0.295", 7.50mm width)
• Electrical Performance: Clock frequency of 30 MHz, propagation delay of 14ns @ 5V with 50pF load
• Trigger Mechanism: Positive edge triggering
• Supply Voltage: 4.5V to 5.5V operating range
• Operating Temperature: 0°C to 70°C specification
• Output Configuration: Tri-state output capability

The SN74ALS564BDW from Texas Instruments meets all functional and physical substitution criteria. Both components share the 74ALS logic family designation, identical package specifications, and equivalent electrical performance parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS564BDW from Texas Instruments is a direct functional substitute for the DM74ALS564AWM. Both components share identical electrical specifications, package dimensions, and logic performance characteristics within the 74ALS family.

The primary distinction is product status: the DM74ALS564AWM is obsolete, while the SN74ALS564BDW maintains active production status. The Texas Instruments part carries ROHS3 compliance certification, supporting modern environmental and regulatory requirements.

A secondary consideration exists regarding output polarity: the DM74ALS564AWM provides non-inverted tri-state outputs, while the SN74ALS564BDW provides inverted tri-state outputs. Circuit design must account for this output inversion when implementing the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS564BDW directly replace the DM74ALS564AWM in existing designs?

A: The SN74ALS564BDW is electrically and physically compatible with the DM74ALS564AWM across all specified parameters. However, the output polarity differs: the substitute provides inverted outputs while the original provides non-inverted outputs. Circuit logic must be evaluated to determine if output inversion requires design modification.

Q: Are the package dimensions identical between these components?

A: Yes. Both the DM74ALS564AWM and SN74ALS564BDW use the 20-SOIC package with identical physical dimensions of 0.295" × 7.50mm width, ensuring mechanical compatibility in PCB layouts.

Q: What is the significance of the product status difference?

A: The DM74ALS564AWM is classified as obsolete, indicating onsemi has discontinued production. The SN74ALS564BDW maintains active production status from Texas Instruments, ensuring long-term availability and supply chain reliability for new designs or production runs.

Q: Do both components meet current environmental compliance standards?

A: The SN74ALS564BDW carries ROHS3 compliance certification. The DM74ALS564AWM compliance status is not specified in available documentation. Both components are REACH Unaffected and carry EAR99 export classification.

Q: Are the electrical performance specifications identical?

A: Yes. Both components operate at 30 MHz clock frequency with 14ns maximum propagation delay at 5V supply with 50pF load. Supply voltage range, quiescent current, output current ratings, and operating temperature specifications are identical.