DS80C390-FCR Equivalent & Substitute Parts

Part Overview

The DS80C390-FCR is an 8051-based 8-bit microcontroller IC manufactured by Analog Devices Inc./Maxim Integrated. This ROMless device operates at 40MHz with a 64-LQFP (10x10) surface mount package and integrates 4K x 8 RAM, CANbus connectivity, and watchdog timer functionality. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

DS80C390-FCR

Analog Devices Inc./Maxim IntegratedIn Stock: 2143DS80C390-FCR Datasheet

Current PartRFQ

DS80C390-FCR+

Analog Devices Inc./Maxim IntegratedIn Stock: 1548DS80C390-FCR+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS80C390-FCR is determined by strict equivalence across the following critical parameters:

• Core Architecture: 8051 processor family
• Memory Configuration: ROMless design with 4K x 8 RAM
• Clock Speed: 40MHz operation
• Electrical Specifications: 3.85V ~ 5.5V supply voltage range
• I/O Count: 32 I/O pins
• Connectivity Suite: CANbus, EBI/EMI, SIO, UART/USART support
• Integrated Peripherals: Power-Fail Reset and Watchdog Timer
• Package Footprint: 64-LQFP (10x10) surface mount

The DS80C390-FCR+ qualifies as a direct substitute based on identical electrical, functional, and mechanical specifications. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DS80C390-FCR+ is the direct functional equivalent of the DS80C390-FCR. Selection between these parts should be based on the following criteria:

For New Designs: The DS80C390-FCR+ is the appropriate choice. This part maintains active product status with Analog Devices Inc./Maxim Integrated and carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and distribution.

For Legacy System Maintenance: The DS80C390-FCR+ provides identical electrical and functional performance, enabling direct substitution in existing applications. The obsolete status of the original part makes the active DS80C390-FCR+ the only viable long-term sourcing option.

Compliance Considerations: The DS80C390-FCR+ satisfies ROHS3 and REACH compliance requirements, whereas the original DS80C390-FCR does not carry RoHS certification. This distinction is material for applications subject to environmental or regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the DS80C390-FCR+ be used as a direct replacement for the DS80C390-FCR?

A: Yes. Both parts are electrically and functionally identical across all specified parameters, including processor architecture, clock speed, memory configuration, I/O count, connectivity interfaces, and package footprint. Pin-for-pin compatibility is maintained.

Q: What is the difference between DS80C390-FCR and DS80C390-FCR+?

A: The primary differences are product status and compliance certification. The DS80C390-FCR is obsolete and RoHS non-compliant. The DS80C390-FCR+ is an active product with ROHS3 compliance. Electrical and functional specifications are identical.

Q: Are there packaging differences between these parts?

A: Both parts use the 64-LQFP (10x10) surface mount package. The DS80C390-FCR is supplied in standard packaging, while the DS80C390-FCR+ is supplied in Tray packaging. Both are suitable for automated assembly processes.

Q: What is the moisture sensitivity level, and does it affect handling?

A: Both parts carry MSL 3 (168 Hours) rating. This indicates the component can be exposed to ambient conditions of 30°C / 85% RH for up to 168 hours before soldering. Standard moisture control procedures during storage and assembly are required.

Q: Is the DS80C390-FCR+ suitable for applications requiring RoHS compliance?

A: Yes. The DS80C390-FCR+ carries ROHS3 compliance certification and is suitable for applications with RoHS requirements. The original DS80C390-FCR does not meet RoHS standards.