L3235中文资料意法半导体数据手册PDF规格书

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.

■ 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