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TOIM3232 Datasheet(PDF) 6 Page - Vishay Telefunken

Part No. TOIM3232
Description  High-Performance gate array package using dual metal layer CMOS technology
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Maker  TFUNK [Vishay Telefunken]
Homepage  http://www.vishay.com
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 6 page
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TOIM3232
Vishay Telefunken
Not for new designs
Rev. A1.1, 02-Apr-01
6 (9)
www.vishay.com
Document Number 82521
Recommended Circuit Diagram for Using TOIM3232 and TFDS4500 in IR Adapters at the Serial Port
RTS
VCC
RxD
VSS
RxD
TxD
TxD
DTR
+5V
VCC
RTS
VSS
+5V
DTR
LED 1
LED 2
R18
VB1
SUB–D 9
5
9
4
8
3
7
2
6
1
D5
+
C1
R13
R10
Q4
3
2
D6
C3
C4
Jumper
D7
+
C6
C5
R17
R11
U2
TFDS4500
3
4
5
6
7
8
1
2
Vcc
Gnd
Sensitivity
NC (AGCopt.)
Txd
IRED anode
IRED cathode
Rxd
R5
R1
Q2
R2
R12/1
IRED1
D8
D1
Q1
1
R12/2
R3
D2
Q3
QZ1
R6
IREDO3
IREDO2
IREDO1
TO1
+
C02
R02
TOIM3232 U1
1
2
3
4
5
6
7
8
9
15
14
13
12
11
10
16
Reset
BR/Data
RD 232
TD 232
Vcc SD
X1
X2
GND
TD LED
RD IR
TD IR
S2
S1
NC
RD LED
VCC
DO1
DO2
D03
R01
R9
D4
1
CO1
RXD
RTS
TXD
DTR
When VCC is used,
leave off Jumper.
When VCC SD from U1 is used,
place Jumper and leave off
R11 and C6
–10V
+
C2
Due to the very limited power to be drawn out of the RS232 port, it is recommended to operate the LEDs for displaying
the state of transmission (D3, D4) with lowest possible current or not to use this function without external power supply.
PCB layout, Gerber plots, component list, and control software are available on request.
Figure 3. Discrete solution for the interface to the RS232 port




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