DS80C323-QCD Equivalent & Substitute Parts

Part Overview

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

Substiute Parts

DS80C323-QCD

Analog Devices Inc./Maxim IntegratedIn Stock: 846DS80C323-QCD Datasheet

Current PartRFQ

DS80C323-QCD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1376DS80C323-QCD+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Core Architecture: 8051-based processor
• Memory Configuration: ROMless architecture 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 Standards: EBI/EMI, SIO, UART/USART connectivity
• Integrated Peripherals: Power-Fail Reset and Watchdog Timer
• Package Compatibility: 44-LCC (J-Lead) surface mount configuration
• Temperature Range: 0°C to 70°C operating specification

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

Parameter Comparison

Engineering Selection Recommendations

The DS80C323-QCD+ is the direct equivalent for the obsolete DS80C323-QCD. Selection between these parts should be based on the following criteria:

For New Designs and Ongoing Production: The DS80C323-QCD+ is the appropriate choice. This part maintains active product status with full electrical and functional equivalence to the original. The DS80C323-QCD+ achieves ROHS3 compliance, meeting current environmental and regulatory requirements. Tube packaging provides standard handling and storage compatibility for production environments.

For Legacy System Support: The DS80C323-QCD remains available in limited inventory (769 units) for direct replacement in existing applications where the original part number must be maintained. However, transition to the DS80C323-QCD+ is recommended for long-term supply chain stability.

Compliance Considerations: The DS80C323-QCD+ satisfies ROHS3 and REACH compliance requirements, whereas the original DS80C323-QCD does not meet current RoHS standards. This distinction is material for applications subject to environmental regulations or customer compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the DS80C323-QCD+ be used as a direct replacement for the DS80C323-QCD?

A: Yes. The DS80C323-QCD+ is electrically and functionally identical to the DS80C323-QCD across all specified parameters, including processor architecture, clock speed, memory configuration, I/O count, voltage range, and peripheral set. Both parts use the 44-LCC (J-Lead) surface mount package with identical pinout and electrical characteristics.

Q: What is the primary difference between these two parts?

A: The DS80C323-QCD is classified as obsolete, while the DS80C323-QCD+ maintains active product status. Additionally, the DS80C323-QCD+ achieves ROHS3 compliance, whereas the original does not. Functionally and electrically, the parts are equivalent.

Q: Are there any package or handling differences?

A: The DS80C323-QCD+ is supplied in Tube packaging, which is standard for production environments. The original DS80C323-QCD packaging specification is not provided. Both parts use identical 44-LCC (J-Lead) surface mount packages with the same physical dimensions (16.59x16.59mm).

Q: What parameters determine substitution eligibility for this microcontroller?

A: Substitution is valid only when the following parameters match: 8051 core processor, 8-bit architecture, 18MHz operating frequency, ROMless memory configuration, 256 x 8 RAM, 2.7V to 5.5V supply voltage, 32 I/O pins, EBI/EMI and UART/USART connectivity, Power-Fail Reset and Watchdog Timer peripherals, 0°C to 70°C operating temperature range, and 44-LCC surface mount package.

Q: Is the DS80C323-QCD+ suitable for applications requiring RoHS compliance?

A: Yes. The DS80C323-QCD+ is ROHS3 compliant and REACH unaffected, making it suitable for applications subject to environmental and regulatory compliance requirements. The original DS80C323-QCD is RoHS non-compliant.