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GS1T70-D540/1 Datasheet PDF - STMicroelectronics

Part NameDescriptionManufacturer
GS1T70-D540/1 ISDN DC-DC CONVERTER ST-Microelectronics
STMicroelectronics ST-Microelectronics
Other PDF  no available.
GS1T70-D540/1 Datasheet PDF : GS1T70-D540/1 pdf   
GS1T70-D540/1 image

DESCRIPTION
The GS1T70-D540/1 converter has been designed for the “U” interface of an ISDN-NTBA (Network Termination Basic Access) system with either 4B3T or 2B1Q standard trasmission.

It meets the requirements of the following specifications:
   EN 60950
   CCITT I.430
   CCITT G.960
   CCITT G.961
   ETS 300 002
   ETS 300 012
   ETS 300 047 (ISDN BASIC ACCESS, Safety and Protection)
  
Two isolated outputs, 5V/90mA and 40V/10.5mA are supplied. The converter offers short-circuit protection (short-circuit on 40V output doesn’t affect 5V output and the input power never exceeds the limit of the specification), input either voltage polarity, 80%minimum efficiency at maximum load, input and output filtering to meet very stringent noise requirements.
The input and the output 2 (40V) stages are protected against differential overvoltage up to 1kV (1.2/50µs) and 250V (10/700µs) respectively.
When the input voltage is below 18V, the converter offers a very high input impedance and a maximum quiescent current of 10µA.
These features allow the converter to operate directly connected to the telephone line without any external components.
In addition, the wide operating input voltage range allows it to operate within the whole range of LT (Line Termination) battery voltage and its relevant line resistance.
2000VRMS isolation voltage for 60 second is provided between input to outputs and between output 1 and output 2.

FEATURES
■ Wide operating line termination voltage Peak input overvoltage withstand: 1kV for 1.2/50µs
■ Peak overvoltage withstand on Output 2 (40V): 250V for 10/700µs
■ Positive or negative input voltage polarity Input and output filtering
■ Short-circuit protection on both outputs
■ Input power during shortcircuit within specification
■ Minimum current drain during stand-by condition: 10µA for Vi<18V
■ Input-output isolation voltage: 2000VRMS for 60 seconds
■ Output1-output2 isolation voltage: 2000VRMS for 60 seconds
■ Mechanical dimensions (L x W x H): 50.8 mm x 50.8 mm x 18 mm (2” x 2” x 0.71”)

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