TSI220B1RL STMicroelectronics, TSI220B1RL Datasheet - Page 4

• Manufacturer Part Number: TSI220B1RL
• Description: IC INTERFACE PROT DIO BRDG 8SOIC
• Manufacturer: STMicroelectronics

Specifications of TSI220B1RL

• Voltage - Clamping: 220V
• Technology: Mixed Technology
• Number Of Circuits: 1
• Applications: Telecommunications
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Voltage - Working: -

Typical application
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Typical application
Figure 3.
Telecom terminals have a diode bridge for polarity guard located at the line interface stage.
They also have above this diode bridge one crowbar protection device that is mandatory to
prevent atmospheric effects and AC mains disturbances from damaging the electronic
circuitry that follows the diode bridge.
STMicroelectonics proposes a single-chip device that includes both protection and the diode
bridge. This is the concept of the TSI devices.
Figure 4.
Ligne A
Ligne B
Central office
Exchange
Application schematic
Uses of the TSI in a conventional telecom network
PTC
Doc ID 5487 Rev 5
Modem
WLL
TSI
Answering
machine
PABX
Computer
Hook
Telephone set
Answering
machine
Telephone set
Speech
dialing
ringer
TSI