IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC20, 3 X 3 MM, 0.75 MM HEIGHT, PLASTIC, QFN-20, Power Management Circuit

LTC4557 - Dual SIM/Smart Card Power Supply and Interface; Package: QFN; Pins: 16; Temperature Range: -40°C to 85°C

LTC487 - Quad Low Power RS485 Driver; Package: PDIP; Pins: 16; Temperature Range: 0°C to 70°C