Datasheet

SN75C188
QUADRUPLE LOW-POWER LINE DRIVERS
SLLS033F – JANUARY 1988 – REVISED MARCH 1997
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
SN75C188 SN75C188
Output
+15 V
V
CC +
V
CC –
V
CC –
V
CC +
NOTE A: External diodes placed in series with the V
CC+
and V
CC–
leads protect the SN75C188 in the fault condition where the device outputs
are shorted to ±15 V and the power supplies are at low voltage and provide low-impedance paths to GND.
Figure 13. Power Supply Protection to Meet Power-Off Fault Conditions of Standard EIA/TIA-232-E