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ISO7842 Arkusz danych(PDF) 21 Page - Texas Instruments

Numer części ISO7842
Szczegółowy opis  ISO7842x High-Performance, 8000VPK Reinforced Quad-Channel Digital Isolator
PDF  39 Pages
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Producent  TI2 [Texas Instruments]
Strona internetowa  https://www.ti.com
Logo TI2 - Texas Instruments

ISO7842 Arkusz danych(HTML) 21 Page - Texas Instruments

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VCC1
VCC2
GND1
GND2
16
14
12
2, 8
9, 15
P3.1
P3.0
UCA0TXD
UCA0RXD
11
15
16
12
4
XOUT
XIN
5
6
2
MSP430F2132
INA
OUTD
1
3
5
4
6
ISO7842
DVss
DVcc
0.1 F
0.1 F
0.1 F
EN1
EN2
7
10
INB
13
11
OUTB
INC
IND
16
0.1 F
OUTC
Vcc
GND
15
T1IN
9
11
12
10
C2–
3
R1OUT
T2IN
14
13
5
7
8
VS–
6
4
2
1
R2OUT
VS+
C1+
C1–
C2+
TRS232
4.7k
4.7k
R1IN
T1OUT
R2IN
T2OUT
1 F
1 F
1 F
1 F
TxD
RxD
RST
CST
ISOGND
10 F
0.1 F
MBR0520L
MBR0520L
1:2.1
0.1 F
3
1
D2
SN6501
D1
Vcc
4, 5
2
GND
3.3V
IN
ON
GND
OU
T
1
5
4
3
LP2985-50
3.3 F
10 F
Isolation
Barrier
VIN
5VISO
2
BP
10nF
OUTA
Figure 8-1. Isolated RS-232 Interface
8.2.1 Design Requirements
For this design example, use the parameters shown in Table 8-1.
Table 8-1. Design Parameters
PARAMETER
VALUE
Supply voltage
2.25V to 5.5V
Decoupling capacitor between VCC1 and GND1
0.1µF
Decoupling capacitor from VCC2 and GND2
0.1µF
8.2.2 Detailed Design Procedure
Unlike optocouplers, which require external components to improve performance, provide bias, or limit current,
the ISO7842 device only requires two external bypass capacitors to operate.
www.ti.com
ISO7842, ISO7842F
SLLSEJ0I – OCTOBER 2014 – REVISED JULY 2025
Copyright © 2025 Texas Instruments Incorporated
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Product Folder Links: ISO7842 ISO7842F



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