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SP3238ECA-L-TR

更新时间： 2024-01-21 13:52:43
品牌 Logo 应用领域
艾科嘉 - EXAR /
页数 文件大小 规格书
21页 854K
描述
Intelligent 3.0V to 5.5V RS-232 Transceiver

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中文翻译

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SP3238ECA-L-TR 数据手册

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SP3238E  
Intelligent +3.0V to +5.5V RS-232 Transceiver  
FEATURES  
1
2
3
4
5
6
7
28  
27  
26  
25  
24  
23  
C2+  
GND  
C2-  
V-  
C1+  
V+  
■ Meets true EIA/TIA-232-F Standards  
from a +3.0V to +5.5V power supply  
■ Interoperable with EIA/TIA-232 and  
adheres to EIA/TIA-562 down to a +2.7V  
power source  
VCC  
C1-  
T IN  
1
T OUT  
1
■ AUTO ON-LINE® circuitry automatically  
wakes up from a 1µA shutdown  
■ Minimum 250Kbps data rate under load  
■ Regulated Charge Pump Yields Stable  
RS-232 Outputs Regardless of VCC  
Variations  
SP3238E  
T
IN  
T OUT  
2
2
22  
T
OUT  
T
IN  
3
3
R IN  
8
9
21 R OUT  
1
1
R
IN  
20  
19  
18  
17  
R
OUT  
2
2
10  
T OUT  
T IN  
4
4
R
IN 11  
R
T
OUT  
IN  
3
3
■ Enhanced ESD Specifications:  
+15kV Human Body Model  
T
OUT  
12  
5
5
ONLINE 13  
16 R OUT  
1
+15kV IEC61000-4-2 Air Discharge  
+8kV IEC61000-4-2 Contact Discharge  
SHUTDOWN 14  
15  
STATUS  
Now Available in Lead Free Packaging  
DESCRIPTION  
The SP3238E device is an RS-232 transceiver solution intended for portable or hand-held applications  
such as notebook and palmtop computers.The SP3238E uses an internal high-efficiency, charge-pump  
power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Exar's driver  
architecture allow the SP3238E device to deliver compliant RS-232 performance from a single power  
supply ranging from +3.0V to +5.5V. The SP3238E is a 5-driver / 3-receiver device that is ideal for laptop  
/ notebook computer and PDA applications. The SP3238E includes one complementary receiver that  
remains alert to monitor an external device's Ring Indicate signal while the device is shutdown.  
The AUTO ON-LINE® feature allows the device to automatically "wake-up" during a shutdown state  
when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise, the device  
automatically shuts itself down drawing less than 1µA.  
SELECTION TABLE  
Device  
Power  
RS-232  
RS-232  
External  
Auto  
TTL 3-State  
# of  
Supplies  
Drivers Receivers Components On-Line  
Pins  
Circuitry  
SP3220E  
SP3223E  
SP3243E  
SP3238E  
+3.0V to +5.5V  
+3.0V to +5.5V  
+3.0V to +5.5V  
+3.0V to +5.5V  
1
2
3
5
1
2
5
3
4 Capacitors  
4 Capacitors  
4 Capacitors  
4 Capacitors  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
16  
20  
28  
28  
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com  
SP3238E_100_020111  
1
1234567...21

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