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SP3249E 데이터 시트보기 (PDF) - Exar Corporation
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SP3249E
Intelligent +3.0V to +5.5V RS-232 Transceiver
Exar Corporation
SP3249E Datasheet PDF : 16 Pages
First
Prev
11
12
13
14
15
16
V
CC
+
C5 0.1µF
+
24
C1+
C1 0.1µF
21
C1-
1
C2+
+
C2 0.1µF
3
C2-
22
V
CC
SP3249E
V+
23
+
C3 0.1µF
V-
4
C4 0.1µF
+
17
R
1
OUT
R
1
IN
8
16
R
2
OUT
5kΩ
R
2
IN
9
14
R
3
OUT
5kΩ
R
3
IN
11
5kΩ
20
T
1
IN
T
1
OUT
5
19
T
2
IN
T
2
OUT
6
18
T
3
IN
T
3
OUT
7
15
T
4
IN
T
4
OUT
10
13
T
5
IN
T
5
OUT
12
DB-9
Connector
GND
2
6
7
8
9
1
2
3
4
5
DB-9 Connector Pins:
1. Received Line Signal Detector 6. DCE Ready
2. Received Data
7. Request to Send
3. Transmitted Data
8. Clear to Send
4. Data Terminal Ready
9. Ring Indicator
5. Signal Ground (Common)
Figure 15. Circuit for the connectivity of the SP3249E with a DB-9 connector
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
11
SP3249E_100_013111
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