DA14581-00AT2 Equivalent & Substitute Parts

Part Overview

The DA14581-00AT2 is an integrated RF transceiver with microcontroller (TxRx + MCU) designed for Bluetooth v4.1 applications operating in the 2.4GHz frequency band. This device integrates a complete Bluetooth stack with embedded processing capabilities in a 40-VFQFN surface mount package. The DA14581-00AT2 carries a "Not For New Designs" product status, indicating that Renesas Electronics Corporation has transitioned this component to end-of-life phase. For new product development and long-term supply assurance, identifying qualified substitute components is essential.

Substiute Parts

DA14581-00AT2

Renesas Electronics CorporationIn Stock: 5778DA14581-00AT2 Datasheet

Current PartRFQ

DA14585-00000AT2

Renesas Electronics CorporationIn Stock: 30813DA14585-00000AT2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The DA14585-00000AT2 qualifies as a direct substitute for the DA14581-00AT2 based on the following critical parameters:

Substitution Criteria:

• Identical RF Family/Standard classification (Bluetooth protocol family)
• Identical operating frequency (2.4GHz)
• Identical component type (TxRx + MCU integrated architecture)
• Identical serial communication interfaces (I2C, SPI, UART)
• Identical package form factor (40-VFQFN Exposed Pad, 5x5mm)
• Identical mounting technology (Surface Mount)
• Identical RoHS compliance status (ROHS3 Compliant)
• Identical MSL rating (3, 168 Hours)
• Identical current consumption specifications (Receiving: 3.7mA, Transmitting: 3.4mA)
• Identical receiver sensitivity (-93dBm)

The DA14585-00000AT2 represents an enhanced variant within the same product family, offering improved specifications while maintaining full electrical and mechanical compatibility with the DA14581-00AT2 footprint and interface requirements.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (DA14581-00AT2): The DA14581-00AT2 remains functional for applications already in production. However, the "Not For New Designs" status indicates limited future support and potential supply constraints. Existing inventory of 5,749 units is available through current distribution channels.

For New Designs: The DA14585-00000AT2 is the recommended selection for new product development. This component carries "Active" product status, ensuring long-term availability and manufacturer support. The DA14585-00000AT2 provides enhanced specifications including Bluetooth v5.0 protocol support, increased memory capacity (64kB OTP vs. 32kB, 128kB ROM vs. 84kB, 96kB SRAM vs. 50kB), and one additional GPIO pin (25 vs. 24). Current inventory of 30,704 units demonstrates strong supply availability.

Compliance Considerations: Both components maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent handling and storage requirements. The DA14585-00000AT2 carries EAR99 export classification compared to the DA14581-00AT2's 5A992C classification, which may affect regulatory documentation requirements depending on destination markets.

Frequently Asked Questions (FAQ)

Q: Can the DA14585-00000AT2 directly replace the DA14581-00AT2 in existing PCB designs?

A: Yes. Both components share identical package geometry (40-VFQFN Exposed Pad, 5x5mm), pin count (40 pins), and interface specifications (I2C, SPI, UART). The pinout compatibility and electrical interface requirements are equivalent, allowing direct PCB substitution without layout modifications.

Q: What are the key differences between these two components?

A: The primary differences are: (1) Bluetooth protocol version (v4.1 vs. v5.0), (2) Memory capacity (DA14585-00000AT2 provides double the OTP, ROM, and SRAM), (3) GPIO availability (25 vs. 24 pins), (4) Power output (0dBm vs. -1dBm), (5) Voltage supply range (DA14585-00000AT2 fixed at 3.3V vs. DA14581-00AT2 range of 2.35V-3.3V), and (6) Product lifecycle status (Active vs. Not For New Designs).

Q: Are there any firmware or software compatibility concerns?

A: Firmware compatibility depends on application-specific implementation. Both components support identical serial communication interfaces and GPIO architecture. However, applications leveraging Bluetooth v5.0-specific features available on the DA14585-00000AT2 would not be compatible with the DA14581-00AT2 hardware.

Q: What is the impact of the voltage supply difference?

A: The DA14581-00AT2 accepts a wider supply voltage range (2.35V-3.3V), while the DA14585-00000AT2 requires a fixed 3.3V supply. Designs currently operating the DA14581-00AT2 at voltages below 3.3V would require power supply modification to accommodate the DA14585-00000AT2.

Q: How do the memory specifications affect application capacity?

A: The DA14585-00000AT2 provides significantly larger memory resources: 2x OTP capacity, 1.5x ROM capacity, and 1.9x SRAM capacity. Applications with substantial firmware or data storage requirements benefit from the enhanced memory architecture of the DA14585-00000AT2.

Q: Are there any export or regulatory differences?

A: The DA14585-00000AT2 carries EAR99 export classification, while the DA14581-00AT2 carries 5A992C classification. Depending on destination markets and end-use applications, export documentation requirements may differ. Consult compliance documentation for specific jurisdictional requirements.

Q: What is the current availability status?

A: The DA14581-00AT2 shows 5,749 units in stock (Not For New Designs status). The DA14585-00000AT2 shows 30,704 units in stock (Active status), indicating substantially higher availability and supply continuity for new procurement.