PSB3186FV1.4 Infineon Technologies, PSB3186FV1.4 Datasheet - Page 53

• Manufacturer Part Number: PSB3186FV1.4
• Description: ISDN Interface ISDN
• Manufacturer: Infineon Technologies

Specifications of PSB3186FV1.4

• Control Type: HDLC
• Data Rate: 192 Kbps
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V
• Package / Case: MQFP-64
• Lead Free Status / Rohs Status: Details

Protection Circuit for Transmitter
Figure 23
Figure 23
The external resistors (R = 5 ... 10
to the pulse mask on the one hand and in order to meet the output impedance of
minimum 20
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
V
becoming active if the 96 kHz test signal is applied while no supply voltage is present.
Data Sheet
DD
+ 0.7 V. The resulting forward voltage of 1.4 V will prevent the protection circuit from
illustrates the secondary protection circuit recommended for the transmitter.
SX1
SX2
External Circuitry for Transmitter
(transmission of a binary zero according to ITU-T I.430) on the other
Figure 23
R
R
) are required in order to adjust the output voltage
the pin voltage range is increased from – 1.4 V to
53
Vdd
Description of Functional Blocks
1:1
3186_23
S Bus
PSB 3186
PSF 3186
2000-08-23
DD