View mc3374re datasheet:

Order this document by MC3374/D MC3374 Advance Information Low Voltage FM Narrowband Receiver LOW VOLTAGE . . . with single conversion circuitry including oscillator, mixer, IF amplifiers, SINGLE CONVERSION limiting IF circuitry, and quadrature discriminator. The MC3374 is perfect for FM RECEIVER narrowband audio and data applications up to 75 MHz which require extremely low power consumption. Battery powered applications down to SEMICONDUCTOR VCC = 1.1 V are possible. The MC3374 also includes an on–board voltage TECHNICAL DATA regulator, low battery detection circuitry, a receiver enable allowing a power down SLEEPMODE?, two undedicated buffer amplifiers to allow simultaneous audio and data reception, and a comparator for enhancing FSK (Frequency Shift Keyed) data recept