View max3241cai-te2 datasheet:

MAX3241CAI-TE2(1/2) IL08D C-MOS 3.0 V TO 5.5 V POWERED RA-232 DRIVER / RECEIVER —TOP VIEW— C2+ 1 28 C1+ C2_ 2 27 V+ V_ 3 VDD 26 R1 IN 4 GND 25 R2 IN 5 24 C1_ R3 IN 6 23 IN EN R4 IN 7 22 IN SHDN R5 IN 8 21 R1 OUT OUT 9 20 R2 OUT T1 OUT 10 R1 T2 19 OUT OUT 11 R2 T3 18 OUT T3 IN 12 17 OUT R3 T2 IN 13 16 OUT R4 EN ; RECEIVER ENABLE R ; RS-232 RECEIVER T1 IN 14 15 OUT R5 SHDN ; SHUTDOWN CONTROL T ; RS-232 TRANSMITTER MAX3241CAI-TE2(2/2) 26 VDD 27 20 C1+ V+ 24 C1_ 3 1 C2+ V_ 2 C2_ 14 T1 T1 9 TTL/CMOS RS-232 13 T2 T2 10 TRANSMITTER TRANSMITTER OUTPUTS OUTPUTS 12 T3 T3 11 R1 21 R2 20 4 R1 R1 19 TTL/CMOS 5 R2 R2 18 RECEIVER OUTPUTS 6 R3 R3 17 RS-232 RECEIVER 7 R4 R4 16 INPUTS 8 R5 R5 15 RECEIVER 23 EN