Rabbit 2000 Microprocessor IC 668-0003-C Equivalent & Substitute Parts

Part Overview

The Digi Rabbit 2000 Microprocessor (668-0003-C) is an 8-bit embedded processor operating at 30MHz in a 100-pin PQFP surface mount package. This component is classified as obsolete and is no longer recommended for new designs. Finding equivalent or substitute parts is necessary for legacy system maintenance, repair, and continued production support where original inventory is depleted or unavailable.

Substiute Parts

668-0003-C

DigiIn Stock: 1124668-0003-C Datasheet

Current PartRFQ

20-668-0003

DigiIn Stock: 1016720-668-0003 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Rabbit 2000 Microprocessor is determined by strict alignment of the following core parameters:

• Core Processor Architecture: Rabbit 2000 (identical instruction set and pinout compatibility)
• Bus Width & Core Count: 1 Core, 8-Bit configuration
• Operating Frequency: 30MHz
• I/O Voltage: 5.0V
• Package Type: 100-PQFP (20x14) form factor
• Mounting Configuration: Surface Mount
• Temperature Range: -55°C ~ 85°C (TA)
• Interface Support: SPI capability

The substitute part 20-668-0003 maintains identical electrical and mechanical specifications across all critical parameters, ensuring functional and physical compatibility with existing designs and PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 20-668-0003 is electrically and mechanically equivalent to 668-0003-C across all functional parameters. Both components share identical core processor architecture, operating frequency, voltage specifications, package geometry, and interface capabilities.

The primary distinction between these parts is packaging format and regulatory compliance status. The substitute part 20-668-0003 is supplied in Tray packaging and carries RoHS Compliant certification, whereas the main part 668-0003-C is RoHS non-compliant. For applications requiring RoHS compliance or where tray packaging is acceptable, 20-668-0003 is the appropriate selection.

Both parts carry "Not For New Designs" or "Obsolete" status, indicating these are legacy components suitable only for maintenance, repair, and support of existing systems. Neither part should be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can 20-668-0003 be used as a direct replacement for 668-0003-C?

A: Yes. Both parts implement the Rabbit 2000 processor core with identical electrical specifications (30MHz, 5.0V I/O, 8-bit architecture), operating temperature range (-55°C ~ 85°C), and 100-PQFP (20x14) package geometry. Pin-for-pin compatibility is maintained, and no circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format and RoHS compliance status. Part 668-0003-C uses standard packaging with RoHS non-compliant status. Part 20-668-0003 is supplied in Tray packaging and is RoHS Compliant. Electrical and mechanical specifications are identical.

Q: Are these parts suitable for new designs?

A: No. Both parts carry legacy product status (Obsolete or Not For New Designs). These components are intended only for maintenance and repair of existing systems. New product development should utilize current-generation embedded processors.

Q: What is the MSL rating and why does it matter?

A: Both parts have MSL 3 (168 Hours) rating. This indicates the component can be exposed to moisture for up to 168 hours at specified humidity levels before soldering. Proper storage in dry conditions and adherence to moisture handling procedures is required during assembly.

Q: Are there any compliance differences between these parts?

A: Yes. Part 20-668-0003 is RoHS Compliant, while 668-0003-C is RoHS non-compliant. If your application or market requires RoHS compliance, 20-668-0003 is the appropriate selection. Both parts are REACH Unaffected.