T5743

• Two Different IF Receiving Bandwidth Versions Are Available (BIF = 300 kHz or 600 kHz)
• 5 V to 20 V Automotive Compatible Data Interface
• IC Condition Indicator, Sleep or Active Mode
• Low Power Consumption Due to Configurable Self Polling with a Programmable Timeframe Check
• High Sensitivity, Especially at Low Data Rates
• Data Clock Available for Manchester- and Bi-phase-coded Signals
• Minimal External Circuitry Requirements, no RF Components on the PC Board Except Matching to the Receiver Antenna
• Sensitivity Reduction Possible Even While Receiving
• Fully Integrated VCO
• SO20 Package
• Supply Voltage 4.5 V to 5.5 V, Operating Temperature Range -40°C to +105°C
• Single-ended RF Input for Easy Adaptation to /4 Antenna or Printed Antenna on PCB
• Low-cost Solution Due to High Integration Level
• ESD Protection According to MIL-STD. 883 (4KV HBM)
• High Image Frequency Suppression Due to 1 MHz IF in Conjunction with a SAW Frontend Filter. Up to 40 dB is Thereby Achievable With State-of-the-art SAWs.
• Communication to Microcontroller Possible Via a Single, Bi-directional Data Line
• Power Management (Polling) Is Also Possible by Means of a Separate Pin Via the Microcontroller
• Programmable Digital Noise Suppression

The T5743 is a multi-chip PLL receiver device supplied in an SO20 package. It has been especially developed for the demands of RF low-cost data transmission systems with data rates from 1 kBaud to 10 kBaud in Manchester or Bi-phase code. The receiver is well suited to operate with Atmel's PLL RF transmitter U2741B. Its main applications are in the areas of telemetering, security technology and keyless-entry systems. T5743 can be used in the frequency receiving range of f0 = 300 MHz to 450 MHz for ASK or FSK data transmission. All the statements made below refer to 433.92 MHz and 315 MHz applications.