 | CH438Q | 4Mbps 3.3V~5V transceiver 4/5 LQFP-44(10x10) RS232 ICs ROHS | WCH | +1 $4.10744 +10 $3.48143 +30 $3.10789 | Min Qty:1 Multiple: 1 | 150 Ship immediately | - | - | - | - |
 | MAX3100EEE+T | IC UART SPI COMPAT 16-QSOP | ADI | +1 $6.50836 +10 $6.26731 +100 $5.68879 +500 $5.39953 more | Min Qty:1 Multiple: 1 | 10 Ship immediately | - | - | - | - |
 | WK2124-ISSG | SPI interface four channel universal asynchronous transceiver lead-free packaging | 成都为开 | +1 $3.54935 +10 $3.06803 +30 $2.78160 +100 $2.32981 more | Min Qty:1 Multiple: 1 | 155 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 $3.06212 +10 $2.59852 +30 $2.32391 +100 $2.04486 more | Min Qty:1 Multiple: 1 | 100 Ship immediately | 2.5V,3.3V | I²C,SPI,UART | SMT | TSSOP28_9.7X4.4MM |
 | CH432T | - | WCH(南京沁恒) | +1 $2.35928 +10 $1.97691 +30 $1.73773 +69 $1.49204 more | Min Qty:1 Multiple: 1 | 181 Ship in 4-7Days | - | - | - | - |