PEB 3081 H V1.4 Infineon Technologies, PEB 3081 H V1.4 Datasheet - Page 48

• Manufacturer Part Number: PEB 3081 H V1.4
• Description: IC S-BUS INTERFACE EXT MQFP44
• Manufacturer: Infineon Technologies

Specifications of PEB 3081 H V1.4

• Function: S / T Bus Interface Transceiver
• Interface: IOM-2, ISDN, SCI
• Number Of Circuits: 1
• Voltage - Supply: 3.3V
• Current - Supply: 30mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-QFP
• Includes: D-Channel Access Control, Monitor Channel Handler
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEB3081HV1.4XT; PEB3081HV14XP; SP000007583; SP000007584

Protection Circuit for Transmitter
Figure 24
Figure 24
The external resistors (R = 5 .... 10 W ) are required in order to adjust the output voltage
to the pulse mask on the one hand and in order to meet the output impedance of
minimum 20 W (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
V
becoming active if the 96 kHz test signal is applied while no supply voltage is present.
Protection Circuit for Receiver
Figure 25
receiver. Protection of symmetrical receivers is rather simple.
Figure 25
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.
illustrates the external circuitry used in combination with a symmetrical
Note: up to 10 pF capacitors are optional for noise reduction
SX1
SX2
External Circuitry for Transmitter
External Circuitry for Symmetrical Receivers
Figure 24
R
R
the pin voltage range is increased from – 1.4 V to
48
Vdd
Description of Functional Blocks
1:1
1:1
S Bus
3081_23
S Bus
PEB 3081
2003-02-04
SBCX-X
DD