DS80C323-END Equivalent & Substitute Parts

Part Overview

The DS80C323-END is an 8051-based 8-bit microcontroller IC manufactured by Analog Devices Inc./Maxim Integrated. This ROMless device operates at 18MHz with a 44-TQFP surface mount package and is designed for embedded applications requiring external program memory. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations.

Substiute Parts

DS80C323-END

Analog Devices Inc./Maxim IntegratedIn Stock: 735DS80C323-END Datasheet

Current PartRFQ

DS80C323-END+

Analog Devices Inc./Maxim IntegratedIn Stock: 1786DS80C323-END+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DS80C323-END is determined by strict equivalence across the following critical parameters:

• Core Architecture: 8051-compatible processor
• Memory Configuration: ROMless design with 256 x 8 RAM
• Operating Frequency: 18MHz clock speed
• Electrical Specifications: 2.7V to 5.5V supply voltage range
• I/O Count: 32 I/O pins
• Interface Connectivity: EBI/EMI, SIO, UART/USART support
• Integrated Peripherals: Power-Fail Reset and Watchdog Timer
• Package Compatibility: 44-TQFP (10x10) surface mount form factor
• Temperature Range: -40°C to 85°C operating specification

The DS80C323-END+ qualifies as a direct substitute based on identical electrical, functional, and mechanical parameters. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The DS80C323-END+ is the direct functional equivalent of the DS80C323-END. Selection between these parts should be based on the following criteria:

For New Designs and Active Production: The DS80C323-END+ is the appropriate choice. This part carries Active product status, ensuring long-term availability and supply chain stability. The DS80C323-END+ meets ROHS3 compliance requirements, satisfying regulatory mandates for new product development and export to regulated markets.

For Legacy System Support: The DS80C323-END remains available in limited inventory (685 units) for maintenance and repair of existing systems. However, transition to the DS80C323-END+ is recommended where feasible to align with current compliance standards and ensure future component availability.

Compliance Considerations: The DS80C323-END+ provides ROHS3 compliance and maintains REACH Unaffected status, identical to the original part. Both devices carry EAR99 export classification and identical HTSUS coding (8542.31.0001).

Frequently Asked Questions (FAQ)

Q: Can the DS80C323-END+ be used as a direct replacement for the DS80C323-END in existing designs?

A: Yes. The DS80C323-END+ is electrically and functionally identical to the DS80C323-END across all specified parameters. Pin configuration, electrical characteristics, memory organization, and peripheral functionality are equivalent. The 44-TQFP package dimensions and pinout are identical, enabling direct PCB substitution.

Q: What is the difference between the DS80C323-END and DS80C323-END+ packaging?

A: The DS80C323-END is supplied in tube packaging, while the DS80C323-END+ is supplied in tray packaging. This distinction affects handling and storage procedures but does not impact device functionality or electrical performance.

Q: Why is the DS80C323-END classified as obsolete?

A: The DS80C323-END has reached end-of-life status within the manufacturer's product portfolio. The DS80C323-END+ represents the active continuation of this product line, offering identical functionality with current compliance certifications and assured long-term availability.

Q: Are there any compatibility concerns when substituting the DS80C323-END+ for the DS80C323-END?

A: No compatibility concerns exist. Both parts share identical core architecture, memory configuration, I/O specifications, and peripheral integration. Firmware and hardware designs developed for the DS80C323-END require no modification for operation with the DS80C323-END+.

Q: What is the significance of ROHS3 compliance on the DS80C323-END+?

A: ROHS3 compliance indicates the DS80C323-END+ meets current Restriction of Hazardous Substances directives, restricting lead, cadmium, mercury, and other hazardous materials. This certification is required for product sales in the European Union and many other regulated markets. The original DS80C323-END does not carry this certification.

Q: Can both parts be used interchangeably in the same production run?

A: Yes. The electrical and functional equivalence of both parts permits interchangeable use within the same production environment. However, documentation and traceability records should reflect the specific part number used in each unit for compliance and support purposes.