Found 3 alternatives for SI4356-B1A-FMR by Silicon Labs. Rf Receivers — 20-VFQFN Exposed Pad.
RF RCVR FSK 142MHZ-1.05GHZ 20QFN
RF RX FSK/GFSK 283-350MHZ 20QFN
RF RX FSK/GFSK 315/433MHZ 20VQFN