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ST75C185 数据表(PDF) 6 Page - STMicroelectronics

部件名 ST75C185
功能描述  LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
PDF  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST75C185 数据表(HTML) 6 Page - STMicroelectronics

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APPLICATION CIRCUITS
To CPU BUS
RI
5
1
2
3
4
9
6
7
8
GND
DCD
DSR
RXD
RTS
TXD
CTS
DTR
Rin1
Rin5
Rin4
Rin3
Rin2
Dout3
Dout2
Dout1
Rout1
Rout5
Rout4
Rout3
Rout2
Din1
Din3
Din2
1
Vss
GND
2
Vcc
Vdd
ST75C185
20
19
9
7
6
5
4
3
14
13
8
10
18
11
12
17
16
15
Vcc
+5 V
Vdd
+12 V
Vss
-12V
DB9S EIA232-E
Serial Port
Connector
RS232 LEVEL
TTL LEVEL
PC Serial Port
100nF
100nF
100nF
CL
CL
CL
UART
(16550)
DCD 38
DSR 37
DTR 33
TXD 11
RXD 21
CTS 36
RTS 32
RI
39
FIGURE 1: Driver Test Circuit for VOH,VOL,
ISO(H) and ISO(L)
FIGURE 2: Driver Test Circuit for IIH and IIL
ST75C185
6/13



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