 | CH438Q | 4Mbps 3.3V~5V transceiver 4/5 LQFP-44(10x10) RS232 ICs ROHS | WCH | +1 $2.39335 +50 $2.23083 +100 $2.19390 | Min Qty:1 Multiple: 1 | 100 Ship immediately | - | - | - | - |
 | WK2124-ISSG | SPI interface four channel universal asynchronous transceiver lead-free packaging | 成都为开 | +1 $3.30840 +30 $2.71313 +67 $2.28020 | Min Qty:1 Multiple: 1 | 67 Ship immediately | 2.5V~5V | SPI | SMT | SSOP20_208MIL |
 | SC16IS752IPW,128 | Dual UART with I2C-bus/SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support TSSOP28_9.7X4.4MM | NXP | +1 $3.87705 +10 $3.75513 +500 $3.29185 | Min Qty:1 Multiple: 1 | 100 Ship immediately | 2.5V,3.3V | I²C,SPI,UART | SMT | TSSOP28_9.7X4.4MM |
 | CH432T | - | WCH | | Min Qty:1 Multiple: 1 | 3 Ship in 4-7Days | - | - | - | - |