产品资料 The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available. These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5μW. The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical. MAX232是市面上最为常见的RS232芯片，亦是用量最大的RS232芯片，性价比高，优质，供货稳定是大部分厂家采用它的主要原因。 说明：MAX232A与MAX232的外围电路相同，但，主要有以下属性不同： 名称 速率 外部电容 MAX232 120Kbps 1 uF MAX232A 200Kbps 0.1 uF