SP3243 SIPEX [Sipex Corporation], SP3243 Datasheet - Page 13

• Manufacturer Part Number: SP3243
• Description: Intelligent +3.0V to +5.5V RS-232 Transceivers
• Manufacturer: SIPEX [Sipex Corporation]

Since both V
from V
be symmetrical. Older charge pump approaches
that generate V
the magnitude of V
inherent inefficiencies in the design.
Rev. 6/30/03
Figure 15. AUTO ON-LINE
CC
, in a no–load condition V
+
and V
–
RS-232 OUTPUT
from V
RS-232 INPUT
VOLTAGES
RECEIVER
–
VOLTAGES
–
compared to V
STATUS
are separately generated
DRIVER
+
®
will show a decrease in
Timing Waveforms
+2.7V
-2.7V
+5V
V
-5V
0V
CC
0V
0V
+
+
and V
SP3223 +3.0V to +5.5V RS-232 Transceivers
due to the
–
t
STSL
will
13
t
ONLINE
The clock rate for the charge pump typically
operates at 250kHz. The external capacitors can
be as low as 0.1µF with a 16V breakdown
voltage rating.
t
STSH
W
S
H
U
D
O
N
T
© Copyright 2003 Sipex Corporation