SP3222B Datasheet, PDF (12/18 Pages) Sipex Corporation – True +3.0V to +5.5V RS-232 Transceivers

[
T
]
+6V
a) C2+
GND 1
T
GND ²
b) C2-
T
-6V
Ch1 2.00V Ch2 2.00V M 1.00µs Ch1 5.48V
Figure 15. Charge Pump Waveforms
V_CC = +5V
+
C_{1 –}
–5V
+5V
+
C_{2 –}
–5V
C₄
+ – _{VDD Storage Capacitor}
– + _{VSS Storage Capacitor}
C₃
Figure 16. Charge Pump — Phase 3
V_CC = +5V
+
C_{1 –}
Figure 17. Charge Pump — Phase 4
RR_CC
+10V
+
C_{2 –}
C₄
+ – _{VDD Storage Capacitor}
– + _{VSS Storage Capacitor}
C₃
RR_SS
DC Power
Source
SSWW11
CC_SS
SSWW22
Device
Under
Test
Figure 18. ESD Test Circuit for Human Body Model
Rev. 6/30/03
SP3222B/3232B True +3.0 to +5.5V RS-232 Transceivers
12
© Copyright 2003 Sipex Corporation