ZHCSO02B July 2007 – July 2021 TRSF3221E
PRODUCTION DATA
The power block increases, inverts, and regulates voltage at V+ and V– pins using a charge pump that requires four external capacitors. Auto-power-down feature for driver is controlled by FORCEON and FORCEOFF inputs. Receiver is controlled by EN input. When MAX3221E is unpowered, it can be safely connected to an active remote RS-232 device.
The driver interfaces the standard logic level to RS232 voltage levels. The DIN input must be valid high or low.