The U3742BM 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 (1 kBaud to 3.2 kBaud for FSK) in Manchester or Bi-phase code. The receiver is well suited to operate with Atmel's PLL RF transmitter IC U2741B. Its main applications in the area of wireless control are telemetering, security technology, tire-pressure monitoring and keyless-entry systems. It 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 in this data sheet refer both to 433.92 MHz and 315 MHz applications.