PSB21383H-V13TR Infineon Technologies, PSB21383H-V13TR Datasheet - Page 105

• Manufacturer Part Number: PSB21383H-V13TR
• Manufacturer: Infineon Technologies

Specifications of PSB21383H-V13TR

• Number Of Line Interfaces: 1
• Control Interface: HDLC
• Lead Free Status / Rohs Status: Supplier Unconfirmed

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