TMS37157 RFID Reader The Texas Instruments TMS37157 RFID reader combines a low frequency transponder interface with an SPI interface and power management for a connected microcontroller. The TI TMS37157 RFID reader is ideal for configuration, data logger, sensor, or remote control applications and uses the low frequency band to ensure communication in a defined direction and harsh environments. The TI TMS37157 RFID reader manages the transponder communication and push-button interaction. During sleep state, the device enters a low-power mode with only 60 nA current consumption.