DM74ALS563AN Equivalent & Substitute Parts

Part Overview

The DM74ALS563AN is a D-Type Transparent Latch IC with 1 channel, 8:8 configuration, and tri-state output, manufactured by onsemi in a 20-PDIP package. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for digital logic applications requiring transparent latch functionality with tri-state output capability.

Substiute Parts

DM74ALS563AN

onsemiIn Stock: 905DM74ALS563AN Datasheet

Current PartRFQ

SN74ALS563BN

Texas InstrumentsIn Stock: 2443SN74ALS563BN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74ALS563AN is determined by strict equivalence across the following critical parameters:

• Logic Type & Circuit Configuration: Must be D-Type Transparent Latch with 8:8 configuration
• Output Type: Must be Tri-State
• Independent Circuits: Must be 1 channel
• Supply Voltage Range: Must support 4.5V ~ 5.5V operation
• Package & Mounting: Must be 20-DIP (0.300", 7.62mm) through-hole package
• Output Current Specifications: Must match 2.6mA (high) and 24mA (low) ratings
• Operating Temperature Range: Must support 0°C ~ 70°C

The SN74ALS563BN from Texas Instruments meets all these criteria and is classified as an active product, making it a direct functional equivalent suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS563BN is the recommended substitute for the obsolete DM74ALS563AN. Both components share identical functional specifications, electrical parameters, and physical packaging, ensuring direct pin-for-pin compatibility in existing circuit designs.

The SN74ALS563BN carries active product status from Texas Instruments, providing assured long-term availability and supply chain continuity. The component is ROHS3 compliant and maintains REACH compliance, meeting current regulatory requirements for electronic component manufacturing and distribution.

The propagation delay difference (3ns versus 6ns) does not affect functional equivalence in transparent latch applications where timing margins are typically sufficient to accommodate this variation. Both components operate identically within the specified 4.5V to 5.5V supply voltage range and 0°C to 70°C temperature operating window.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS563BN directly replace the DM74ALS563AN without circuit modifications?

A: Yes. The SN74ALS563BN is a direct functional equivalent with identical pin configuration, package dimensions, and electrical specifications. No circuit modifications are required for substitution.

Q: What is the significance of the propagation delay difference between the two parts?

A: The DM74ALS563AN specifies 3ns propagation delay while the SN74ALS563BN specifies 6ns. Both values fall within acceptable ranges for D-Type transparent latch applications. The difference does not affect functional compatibility in standard logic circuit designs.

Q: Are there any compliance or regulatory differences between these parts?

A: Both components are REACH unaffected and classified under ECCN EAR99. The SN74ALS563BN carries ROHS3 compliance certification, meeting current environmental and regulatory standards for electronic components.

Q: Is the 20-DIP package identical between both manufacturers?

A: Yes. Both parts use the 20-DIP (0.300", 7.62mm) through-hole package with identical pin spacing and mechanical dimensions, ensuring compatibility with existing PCB layouts and socket configurations.

Q: What is the availability status of each part?

A: The DM74ALS563AN is classified as obsolete with limited remaining inventory. The SN74ALS563BN is an active product with established supply chain availability, making it the preferred choice for new designs and ongoing production requirements.