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ST3241E Datasheet(PDF) 4 Page - STMicroelectronics

Part No. ST3241E
Description  ±15kV ESD Protected 3 to 5.5V, 400kbps, RS-232 transceiver with auto-powerdown
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST3241E Datasheet(HTML) 4 Page - STMicroelectronics

 
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Pin configuration
ST3241E
4/17
18
R2OUT
Second receiver output voltage
19
R1OUT
First receiver output voltage
20
R2OUTB
Non-inverting complementary receiver output, always active for wake-up
21
R1OUTB
Non-inverting complementary receiver output, always active for wake-up
22
SHDN
Shutdown control. Active low.
23
EN
Receiver enable. Active low
24
C1-
Negative terminal of voltage- charge pump capacitor
25
GND
Ground
26
VCC
Supply voltage
27
V+
5.5V Generated by the charge pump
28
C1+
Positive terminal of voltage- Charge pump capacitor
Table 1.
Pin description
Pin n°
Symbol
Name and function
Table 2.
Shutdown and enable control truth table
SHDN
EN
TOUT
ROUT
ROUTB
0
0
HIGH Z
ACTIVE
ACTIVE
0
1
HIGH Z
HIGH Z
ACTIVE
1
0
ACTIVE
ACTIVE
ACTIVE
1
1
ACTIVE
HIGH Z
ACTIVE


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