SP3249E Datasheet, PDF (9/14 Pages) Sipex Corporation – Intelligent +3.0V to +5.5V RS-232 Transceivers

V_CC = +5V
+
C_{1 –}
–5V
+5V
+
C_{2 –}
–5V
C₄
+ – _{VDD Storage Capacitor}
– + _{VSS Storage Capacitor}
C₃
Figure 13. Charge Pump — Phase 3
V_CC = +5V
+
C_{1 –}
+10V
+
C_{2 –}
C₄
+ – _{VDD Storage Capacitor}
– + _{VSS Storage Capacitor}
C₃
Figure 14. Charge Pump — Phase 4
VCC
+
C5 0.1µF
22
24
VCC
+
C1+
C1 0.1µF
21 _C1-
V+
+
1 _{C2+ SP3249E}
C2 0.1µF
3 _C2-
V-
17 R₁OUT
16 R₂OUT
14 ^R3^OUT
20 T₁IN
19 T₂IN
18 T₃IN
15 T₄IN
13 T₅IN
R₁IN
5kΩ
R₂IN
5kΩ
R₃IN
5kΩ
T₁OUT
T₂OUT
T₃OUT
T₄OUT
T₅OUT
23
+
C3 0.1µF
4
C4 0.1µF
+
8
9
11
5
6
7
10
12
DB-9
Connector
6
GND
7
8
2
9
DB-9 Connector Pins:
1. Received Line Signal Detector
2. Received Data
3. Transmitted Data
4. Data Terminal Ready
5. Signal Ground (Common)
6. DCE Ready
7. Request to Send
8. Clear to Send
9. Ring Indicator
Figure 15. Circuit for the connectivity of the SP3249E with a DB-9 connector
Rev.4/08/02
SP3249E Intelligent +3.0V to +5.5V RS-232 Transceivers
9
1
2
3
4
5
© Copyright 2002 Sipex Corporation