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SP3238ECA-L/TR Datasheet(PDF) 11 Page - Exar Corporation

Part # SP3238ECA-L/TR
Description  Intelligent 3.0V to 5.5V RS-232 Transceiver
PDF  21 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP3238ECA-L/TR Datasheet(HTML) 11 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3238E_100_020111
11
Figure 15. Circuit for the connectivity of the SP3238E with a DB-9 connector
6. DCE Ready
7. Request to Send
8. Clear to Send
9. Ring Indicator
DB-9 Connector Pins:
1. Received Line Signal Detector
2. Received Data
3. Transmitted Data
4. Data Terminal Ready
5. Signal Ground (Common)
6
7
8
9
1
2
3
4
5
DB-9
Connector
26
VCC
0.1µF
C5
+
VCC
GND
2
To µP Supervisor
Circuit
8
9
11
5kΩ
5kΩ
5kΩ
16
21
20
18
5
6
7
R1OUT
R1IN
R1OUT
R2IN
R3IN
R2OUT
R3OUT
10
12
24
23
22
T1IN
T2OUT
T2IN
T3IN
T3OUT
T1OUT
19
17
T4OUT
T4IN
T5IN
T5OUT
SP3238E
28
25
3
1
27
4
C3
C4
+
+
C1+
C1-
C2+
C2-
V+
V-
+
C2
C1
+
13
14
15
VCC
ONLINE
SHUTDOWN
STATUS
0.1µF
0.1µF
0.1µF
0.1µF



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