CC2500RTK — 2.4 GHz ISM transceiver, now obsolete
The Texas Instruments CC2500RTK is a 2.4 GHz low-power ISM-band transceiver designed for short-range wireless links in the 2400–2483.5 MHz band. It supports multiple modulation formats — 2FSK, GFSK, MSK, and OOK — making it flexible for proprietary protocols in consumer, industrial, and home-automation applications.
Supply range and interface fit
The SPI serial interface handles all configuration and data transfer, keeping the host MCU pin count low. Current draw ranges from 13.3 mA to 19.6 mA in receive and 11.1 mA to 21.5 mA in transmit, which is typical for this generation of 2.4 GHz radios.
Buyers filling a BOM line for this order code will need to source through the independent distribution channel, where remaining stock — new and surplus — is available. Date-code provenance matters: given the EOL status, verify the stock is genuine and within acceptable date-code windows for your reliability requirements.
20-QFN package and thermal pad
The MSL rating should be confirmed from the date-code trace;