PSB21384HV13XT Infineon Technologies, PSB21384HV13XT Datasheet - Page 105
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PSB21384HV13XT
Manufacturer Part Number
PSB21384HV13XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PSB21384HV13XT.pdf
(270 pages)
Specifications of PSB21384HV13XT
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
- Current page: 105 of 270
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2.3.13.1.1 Protection Circuitry for Transmitter
Figure 59
External Circuitry for Transmitter
Figure 59 illustrates the secondary protection circuit recommended for the transmitter.
The external resistors (8 ... 10
pulse mask on the one hand and in order to meet the output impedance of minimum 20
(transmission of a binary zero according to ITU-T I.430) on the other hand.
Two mutually reversed diode paths protect the device against positive or negative
overvoltages on both lines.
An ideal protection circuit should limit the voltage at the SX pins from – 0.4 V to V
+ 0.4 V. With the circuit In figure 59 the pin voltage range is increased from – 1.4 V to
V
become active if the 96 kHz test signal is applied while no supply voltage is present.
2.3.13.1.2 Protection Circuitry for Receiver
Figure 60 illustrates the external circuitry used in combination with a symmetrical
receiver. Protection of symmetrical receivers is rather comfortable.
Data Sheet
DD
+ 0.7 V. The resulting forward voltage of 2.1 V will prevent the protection circuit to
SX1
SX2
GND
10
10
) are required in order to adjust the output voltage to the
95
VDD
1:1
diod_sx_s.vsd
S Bus
PSB 21381/2
PSB 21383/4
Interfaces
2001-03-12
DD
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