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ST3243B bảng dữ liệu(PDF) 5 Page - STMicroelectronics

tên linh kiện ST3243B
Giải thích chi tiết về linh kiện  3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3243B bảng dữ liệu(HTML) 5 Page - STMicroelectronics

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ST3243B ST3243C
Pin configuration
Doc ID 7539 Rev 10
5/17
14
T1IN
First transmitter input voltage
15
R5OUT
Fifth receiver output voltage
16
R4OUT
Fourth receiver output voltage
17
R3OUT
Third receiver output voltage
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
INVALID
Output of the valid signal detector. Indicates if a valid RS-232 level is present
on receiver inputs logic “1”
22
FORCEOFF
Drive low to shut down transmitters and on-board power supply. This
overrides all automatic circuitry and FORCEON
23
FORCEON
Drive high to override automatic circuitry keeping transmitters on
(FORCEOFF must be high)
24
C1-
Negative terminal of voltage-charge pump capacitor
25
GND
Ground
26
VCC
Supply voltage
27
V+
5.5 V generated by the charge pump
28
C1+
Positive terminal of voltage-charge pump capacitor
Table 2.
Pin description (continued)
Pin n°
Symbol
Name and function
Table 3.
Truth table
FORCEOFF
TOUT
ROUT
R2OUTB
0
HIGH Z
HIGH Z
ACTIVE(1)
1ACTIVE(1)
ACTIVE(1)
ACTIVE(1)
1.
If the part is in auto-power-down mode (FORCEOFF = VCC, FORCEON = GND) it is shutdown, if no valid RS-232 levels
are present on all receiver input.


Số phần tương tự - ST3243B_11

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