sp3223ebcy-tr Exar Corporation, sp3223ebcy-tr Datasheet - Page 13

• Manufacturer Part Number: sp3223ebcy-tr
• Description: Sp3223eb -intelligent +3.0v To +5.5v Rs-232 Transceivers
• Manufacturer: Exar Corporation

Figure 17. Charge Pump — Phase 1
Figure 19. Charge Pump Waveforms
Figure 20. Charge Pump — Phase 3
Figure 21. Charge Pump — Phase 4
Date: 10/06/06
Figure 18. Charge Pump — Phase 2
2
a) C
b) C
1
2
C
C
C
2+
2
C
1
1
-
1
1
–5V
+
–
Ch1 2.00V
+
–
–5V
+
–
+
–
V
V
V
V
CC
CC
CC
CC
= +5V
= +5V
= +5V
= +5V
SP3223 +3.0V to +5.5V RS-232 Transceivers
[
Ch2
C
C
C
2
2
C
2
+10V
+5V
–5V
+
+
–
2
–
+5V
–5V
+
–10V
–
+
–
2.00V M 1.00µs Ch1 1.96V
13
T
T
T
+
–
C
+
–
C
C
4
+
–
C
3
C
4
+
–
C
+
3
–
+
–
4
C
3
+
–
C
V
V
4
+
3
V
V
DD
SS
–
V
V
DD
SS
]
DD
SS
Storage Capacitor
Storage Capacitor
V
V
Storage Capacitor
Storage Capacitor
DD
SS
Storage Capacitor
Storage Capacitor
Storage Capacitor
Storage Capacitor
+6V
-6V
0V
0V
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