SP3238 Datasheet, PDF (13/19 Pages) Sipex Corporation – Intelligent +3.0V to +5.5V RS-232 Transceiver

VCC
+
C5 0.1µF
28
+
C1+
C1 0.1µF
25 _C1-
+
C2 0.1µF
1 _C2+
3 _C2-
16 ^R₁^OUT
21 ^R₁^OUT
20 ^R₂^OUT
18 ^R3^OUT
24 ^T1^IN
26
VCC
V+
SP3238
V-
R₁IN
5kΩ
R₂IN
5kΩ
R₃IN
5kΩ
T₁OUT
27
+
C3 0.1µF
4
C4 0.1µF
+
8
9
11
5
23 T₂IN
T₂OUT ₆
22 T₃IN
T₃OUT ₇
19 T₄IN
T₄OUT ₁₀
VCC
To µP Supervisor
Circuit
17 T₅IN
14
SHUTDOWN
13 _ONLINE
15 _STATUS
GND
2
T₅OUT ₁₂
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
DB-9
Connector
6
7
8
9
1
2
3
4
5
Figure 16. Circuit for the connectivity of the SP3238 with a DB-9 connector
Rev. 6/30/03
SP3238 Intelligent +3.0V to +5.5V RS-232 Transceiver
13
© Copyright 2003 Sipex Corporation