GD65232_16 Datasheet, PDF (11/23 Pages) Texas Instruments – MULTIPLE RS-232 DRIVERS AND RECEIVERS

ą
GD65232, GD75232
MULTIPLE RSĆ232 DRIVERS AND RECEIVERS
ą
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
GD65232,
GD75232
VDD
Output
±15 V
GD65232,
GD75232
VSS
VSS
Figure 15. Power-Supply Protection to Meet Power-Off Fault Conditions of TIA/EIA-232-F
TL16C450
ACE
43
RI
37
DTR
40
CTS
13
SO
36
RTS
SI ¹¹
41
DSR
42
DCD
11
GND
−12 V
10
VSS
5
12
RY5
9 RI
RA5
9
13
DA3
8 DTR
DY3
14
RY4
15
DA2
16
DA1
17
RY3
GD65232,
GD75232
7
RA4
6
DY2
5
DY1
4
RA3
CTS
TX
RTS
RX
C3
C2
C1
TIA/EIA-232-F
DB9S
Connector
18 _RY2
3 DSR
RA2
6
19 _RY1
2 DCD
RA1
1
20
5V
VCC
1
VDD
12 V
Figure 16. Typical Connection
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
11