For proper operation:

• DIN, FORCEOFF and FORCEON inputs must be connected to valid low or high logic levels
• Select capacitor values based on VCC level for best performance

ROUT and DIN connect to UART or general purpose logic lines. FORCEON and FORCEOFF may be connected general purpose logic lines or tied to ground or VCC. INVALID may be connected to a general purpose logic line or left unconnected. RIN and DOUT lines connect to a RS232 connector or cable. DIN, FORCEON, and FORCEOFF inputs must not be left unconnected.