The MAX3222/MAX3232/MAX3237/MAX3241 transceivers have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a

　　3.0V to 5.5V supply with a dual charge pump. The

　　devices require only four small 0.1μF external chargepump capacitors. The MAX3222， MAX3232， and

　　MAX3241 are guaranteed to run at data rates of

　　120kbps while maintaining RS-232 output levels. The

　　MAX3237 is guaranteed to run at data rates of 250kbps

　　in the normal operating mode and 1Mbps in the

　　MegaBaud? operating mode， while maintaining RS-232

　　output levels.

　　The MAX3222/MAX3232 have 2 receivers and 2

　　drivers. The MAX3222 features a 1μA shutdown mode

　　that reduces power consumption and extends battery

　　life in portable systems. Its receivers remain active in

　　shutdown mode， allowing external devices such as

　　modems to be monitored using only 1μA supply current. The MAX3222 and MAX3232 are pin， package，

　　and functionally compatible with the industry-standard

　　MAX242 and MAX232， respectiv