GD75232
MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS206C – MAY 1995 – REVISED JULY 1998
APPLICATION INFORMATION
Diodes placed in series with the V
DD
and V
SS
leads protect the 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
±
15 V
GD75232
Output
VDD
GD75232
VSS
VSS
Figure 15. Power-Supply Protection to Meet Power-Off Fault Conditions of TIA/EIA-232-F
TL16C450
ACE
RI 43
DTR 37
CTS 40
SO 13
RTS 36
SI 11
DSR 41
DCD 42
– 12 V
11
12
13
14
15
16
17
18
19
20
5V
GND
RY5
DA3
RY4
DA2
DA1
RY3
RY2
RY1
VCC
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
1
12 V
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 ]
