REV. 0
ADM2209E
–4–
PIN FUNCTION DESCRIPTION
Pin Number Mnemonic Function
1R5
OUT
A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
2R4
OUT
A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
3R3
OUT
A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
4R2
OUT
A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
5R1
OUT
A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
6T3
IN
A Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)
7T2
IN
A Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)
8T1
IN
A Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)
9 STBY 3.3 V/5 V Standby Power Supply for Receiver R5 in Ports A and B
10 V
DD
Positive Power Supply, Nominally +12 V
11 C+ Positive Terminal of C1 (If C1 is polarized capacitor.)
12 T1
IN
B Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)
13 T2
IN
B Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)
14 T3
IN
B Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)
15 R1
OUT
B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
16 R2
OUT
B Receiver Output (3 V/5 V TTL/CMOS Logic Levels)
17 R3
OUT
B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
18 R4
OUT
B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
19 R5
OUT
B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)
20 R5
IN
B Receiver Input (EIA-232 Signal Levels)
21 R4
IN
B Receiver Input (EIA-232 Signal Levels)
22 R3
IN
B Receiver Input (EIA-232 Signal Levels)
23 R2
IN
B Receiver Input (EIA-232 Signal Levels)
24 R1
IN
B Receiver Input (EIA-232 Signal Levels)
25 T3
OUT
B Driver Output (EIA-232 Signal Levels)
26 T2
OUT
B Driver Output (EIA-232 Signal Levels)
27 T1
OUT
B Driver Output (EIA-232 Signal Levels)
28 GND Ground Pin. Must Be Connected to 0 V
29 C– Negative Terminal of C1 (If C1 is polarized capacitor.)
30 V– Inverter Output (–12 V Nominal)–Terminal of C2 (If C2 is polarized capacitor.)
31 T1
OUT
A Driver Output (EIA-232 Signal Levels)
32 T2
OUT
A Driver Output (EIA-232 Signal Levels)
33 T3
OUT
A Driver Output (EIA-232 Signal Levels)
34 R1
IN
A Receiver Input (EIA-232 Signal Levels)
35 R2
IN
A Receiver Input (EIA-232 Signal Levels)
36 R3
IN
A Receiver Input (EIA-232 Signal Levels)
37 R4
IN
A Receiver Input (EIA-232 Signal Levels)
38 R5
IN
A Receiver Input (EIA-232 Signal Levels)