EXAR
接口, UART, 4通道, 3 Mbps, 3 V, 3.6 V, TQFP, 48 引脚
NXP
接口, UART, 2通道, 1 Mbps, 2.97 V, 3.63 V, QFP, 44 引脚
TEXAS INSTRUMENTS
接口, UART, 2通道, 3 Mbps, 1.62 V, 5.5 V, TQFP, 48 引脚