RN-270FDTV Equivalent & Substitute Parts

Part Overview

The RN-270FDTV is a Bluetooth v2.1 RF adapter with RS-232 interface, designed for serial communication applications requiring Bluetooth connectivity. This adapter features a female DB9 connector and supports data rates up to 232kbps. The product is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

RN-270FDTV

Microchip TechnologyIn Stock: 1097RN-270FDTV Datasheet

Current PartRFQ

RN4678-V/RM122

Microchip TechnologyIn Stock: 1149RN4678-V/RM122 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RN4678-V/RM122 serves as the manufacturer-recommended substitute for the obsolete RN-270FDTV. Substitution is based on the following critical parameters:

Protocol Compatibility: Both parts are Bluetooth-based wireless communication modules manufactured by Microchip Technology. The substitute operates on Bluetooth v5.0, which maintains backward compatibility with Bluetooth v2.1 legacy systems while providing enhanced performance.

Data Rate Capability: The RN4678-V/RM122 supports 1Mbps data rate, exceeding the RN-270FDTV's 232kbps maximum, ensuring adequate bandwidth for equivalent or enhanced functionality.

Compliance and Certification: Both parts maintain ROHS3 compliance and MSL Level 1 rating, meeting identical environmental and regulatory requirements.

Manufacturer Continuity: Both components are sourced from Microchip Technology, ensuring consistent design philosophy and technical support.

Parameter Comparison

Engineering Selection Recommendations

The RN4678-V/RM122 is the designated substitute for the obsolete RN-270FDTV based on manufacturer recommendation and active product status. Selection of this substitute is supported by:

Product Lifecycle Status: The RN-270FDTV is obsolete with no continued manufacturing. The RN4678-V/RM122 maintains active status with confirmed inventory availability (1134 units in stock), ensuring long-term supply chain viability.

Regulatory Compliance: Both components satisfy ROHS3 compliance requirements and maintain identical MSL Level 1 ratings, permitting direct substitution in applications with equivalent environmental specifications.

Protocol Advancement: Bluetooth v5.0 in the substitute provides enhanced performance characteristics while maintaining compatibility with legacy Bluetooth v2.1 systems, supporting both existing and future application requirements.

Technical Specifications: The substitute's 1Mbps data rate capability exceeds the original 232kbps specification, providing performance margin for system operation.

Frequently Asked Questions (FAQ)

Q: Can the RN4678-V/RM122 directly replace the RN-270FDTV in existing designs?

A: The RN4678-V/RM122 is the manufacturer-recommended substitute. However, design integration requires evaluation of interface requirements. The RN-270FDTV features RS-232 interface with female DB9 connector, while the RN4678-V/RM122 is a surface-mount transceiver module with UART serial interface. Interface adaptation may be necessary depending on system architecture.

Q: What are the key differences in packaging between these parts?

A: The RN-270FDTV is an adapter with connector-based interface. The RN4678-V/RM122 is a 33-SMD surface-mount module requiring PCB integration. System redesign may be required to accommodate the different form factors.

Q: Is Bluetooth v5.0 backward compatible with Bluetooth v2.1 systems?

A: Bluetooth v5.0 maintains backward compatibility with earlier Bluetooth versions including v2.1. The RN4678-V/RM122 can communicate with legacy Bluetooth v2.1 devices.

Q: What is the inventory status for the substitute part?

A: The RN4678-V/RM122 has 1134 units in stock as new original inventory, confirming availability for immediate procurement.

Q: Are both parts compliant with the same regulatory standards?

A: Both the RN-270FDTV and RN4678-V/RM122 are ROHS3 compliant and carry MSL Level 1 ratings, meeting identical environmental and regulatory requirements.