39
39
AVR-3805 / AVC-3890
LMS202IMX
LMS202IMX Terminal Function
Pin Number
Pin Name
Pin Function
1, 3
C1+, C1−
External capacitor connection pins. Recommended external capacitor C1 = 0.1µF (6.3V)
2
V+
Positive supply for TIA/EIA-232E drivers. Recommended external capacitor C4 = 0.1µF (6.3V)
4, 5
C2+, C2−
External capacitor connection pins. Recommended external capacitor C2 = 0.1µF (16V)
6
V−
Negative supply for TIA/EIA-232E drivers. Recommended external capacitor C3 = 0.1µF (16V)
7, 14
T1out, T2out
Transmitter output pins conform to TIA/EIA-232E levels. The typical transmitter output swing is
±
8V when loaded 3k
Ω
load to ground. The open-circuit output voltage swings from (V+ − 0.6V)
to V−
8,13
R1in, R2in
Receiver inputs accept TIA/EIA-232
9, 12
R1out and R2out Receiver output pins are TTL/CMOS compatible
10, 11
Tin1, Tin2
Transmitter input pins are TTL/CMOS compatible. Inputs of transmitter do not have pull-up
resistors. Connect all unused transmitter inputs to ground
15
GND
Ground pin
16
V
S
Power supply pin for the device, +5V (
±
10%)
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