GD65232, GD75232
MULTIPLE RS 232 DRIVERS AND RECEIVERS
SLLS206J − MAY 1995 − REVISED NOVEMBER 2004
APPLICATION INFORMATION
Diodes placed in series with the V
DD
and V
SS
leads protect the GD65232 and GD75232 in the fault condition in which
the device outputs are shorted to
±15
V and the power supplies are at low and provide low-impedance paths to ground
(see Figure 15).
VDD
VDD
GD65232,
GD75232
VSS
VSS
GD65232,
GD75232
±15
V
Output
Figure 15. Power-Supply Protection to Meet Power-Off Fault Conditions of TIA/EIA-232-F
TL16C450
ACE
RI
DTR
CTS
SO
RTS
SI
DSR
DCD
43
37
40
13
36
11
41
42
5V
−12 V
11
12
13
14
15
16
17
18
19
20
GND
RY5
DA3
RY4
DA2
DA1
RY3
RY2
RY1
VCC
GD65232,
GD75232
VSS
RA5
DY3
RA4
DY2
DY1
RA3
RA2
RA1
VDD
10
9
8
7
6
5
4
3
2
1
RI
DTR
CTS
TX
RTS
RX
DSR
DCD
12 V
1
C1
6
C2
C3
TIA/EIA-232-F
DB9S
Connector
5
9
Figure 16. Typical Connection
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
11
TI [ TEXAS INSTRUMENTS ]
