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— TOP VIEW —
MC145407F IL22
C-MOS RS-232C DRIVER/RECEIVER
C2+ 1 2 GND C2– 3 4 VSS RX1 IN 5 TX1 OUT 6 RX2 IN 7 TX2 OUT 8 RX3 IN 9 TX3 OUT 10
R R R
20 C1+ VCC 19 18 C1– VDD (+5V) 17 16 DO1 OUT
D
15 DI1 IN 14 DO2 OUT
D
13 DI2 IN
12 DO3 OUT
D
INPUT DI1 - DI3 RX1 - RX3
w
w
w
OUTPUT DO1 - DO3 TX1 - TX3
t a .D
S a
D = DRIVER R = RECIVER
...
