APPLICATIONS
HIGHLY INTEGRATED SUBSCRIBER LINE INTERFACE KIT FOR PABX AND KEY SYSTEM APPLICATIONS
IMPLEMENTS ALL KEY ELEMENTS OF THE BORSCHT FUNCTION INTEGRATED ZERO CROSSING BALANCED RINGING INJECTION ELIMINATES EXTERNAL RELAY AND CENTRALISED RINGING GENERATOR ZERO NOISE INJECTED ON ADJACENT LINES DURING RINGING SEQUENCE LOW POWER IN STANDBY AND ACTIVE MODES BATTERY FEED WITH PROGRAMMABLE LIMITING CURRENT PARALLEL LATCHED DIGITAL INTERFACE SIGNALLING FUNCTIONS (OFF HOOK, GND-KEY) LOW NUMBER OF EXTERNAL COMPONENTS INTEGRATED THERMAL PROTECTION INTEGRATED OVER CURRENT PROTECTION 0°C TO 70°C: L3234/L3235 -40°C TO 85°C: L3234T/L3235T HEPTAWATT ORDERING NUMBER: L3234 PLCC28 ORDERING NUMBER: L3235 DESCRIPTION
The L3234/L3235 is a highly integrated SLIC KIT targeted to PABX and key system applications The kit integrates the majority of functions required to interface a telephone line. The L3234/L3235 implements the main features of the broths function: - Battery Feed (Balanced Mode) - Ringing Injection - Signalling Detection - Hybrid Function The Kit comprises 2 devices, the L3234 ringing injector fabricated in Bipolar in 140V Technology.
STMicroelectronics
