CYRF6936B-40LTXC

RF Transceiver ICS Overview

The CYRF6936B-40LTXC is a WirelessUSB™ LP 2.4 GHz Radio System on Chip (SoC) manufactured by Infineon Technologies. It integrates an RF transceiver with an 8-bit microcontroller in a 40-QFN package. The device operates within the 2.4 GHz to 2.497 GHz frequency range, supporting DSSS and GFSK modulation formats. Key electrical parameters include a maximum data rate of 250 kb/s, a transmit output power of 4 dBm, and a receive sensitivity of -97 dBm. It functions on a supply voltage between 2.4 V and 3.6 V, with receive current at 18.4 mA and transmit current at 21 mA. The component utilizes an SPI interface and is rated for operating temperatures from 0°C to +70°C.

RF Transceiver ICS Feature Summary

• Integrates a 2.4 GHz radio transceiver with an 8-bit microcontroller on a single chip
• Supports DSSS and GFSK modulation protocols for wireless communication
• Features a low-power design suitable for battery-operated applications
• Includes a serial peripheral interface (SPI) for host connectivity

RF Transceiver ICS Applications

• Residential automation systems
• Security and alarm systems
• Smart home appliances
• Industrial, Scientific, and Medical (ISM) band devices

RF Transceiver ICS Procurement Notes

This specific part number is officially listed as obsolete or discontinued by the manufacturer. Verification of availability should focus on surplus distributors or secondary market suppliers rather than direct OEM channels. Buyers must confirm the authenticity of stock through authorized reverse distribution networks. Ensure that any sourced units match the original Infineon specifications and packaging standards to maintain system reliability.

RF Transceiver ICS Selection Notes

Engineers selecting this component should note its integration of both RF and MCU capabilities, which reduces bill-of-materials complexity. The device is designed for interoperability with first-generation CYWUSB69xx products. Selection requires consideration of the 40-QFN package constraints and the specific 2.4 GHz ISM band regulatory requirements for the target region. Verify that the required data rates and sensitivity meet the application's link budget needs.

RF Transceiver ICS Part Context

The CYRF6936B-40LTXC belongs to the WirelessUSB™ LP series, originally developed by Cypress Semiconductor before its acquisition by Infineon Technologies. This series targets low-power wireless applications requiring simple integration. The 'B' suffix typically denotes a specific revision or variant within the family. It serves as a complete solution for short-range wireless control, replacing discrete RF and MCU combinations in legacy designs.

RF Transceiver ICS Replacement Considerations

As the part is obsolete, no direct official substitute is confirmed in public documentation. Engineers may need to evaluate newer generations from the same product family or alternative SoCs with compatible pinouts and protocol support. Cross-referencing with current Infineon WirelessUSB offerings is recommended.