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參數資料
| 型號： | L3234T |
| 英文描述： | Telephone Ringer |
| 中文描述： | 電話鈴聲 |
| 文件頁數： | 1/26頁 |
| 文件大小： | 457K |
| 代理商： | L3234T |
This isadvanced information on anew product now in development or undergoing evaluation. Details are subject to change without notice.
Janauary 1995
HIGHLY INTEGRATED SUBSCRIBER LINE
INTERFACE KIT FOR PABX AND KEY SYS-
TEM APPLICATIONS
IMPLEMENTS ALL KEY ELEMENTS OF THE
BORSCHT FUNCTION
INTEGRATED ZERO CROSSING BALANCED
RINGING INJECTION ELIMINATES EXTER-
NAL 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
PARALLELLATCHED DIGITAL INTERFACE
SIGNALLING
FUNCTIONS
GND-KEY)
LOW NUMBER OF EXTERNAL COMPO-
NENTS
INTEGRATEDTHERMAL PROTECTION
INTEGRATED OVER CURRENT PROTEC-
TION
0
°
C TO70
°
C: L3234/L3235
-40
°
C TO 85
°
C: L3234T/L3235T
(OFF
HOOK,
DESCRIPTION
The L3234/L3235is a highly integrated SLIC KIT
targeted to PABX and key system applications
The kit integrates the majority of functions re-
quired
to
interface
a
L3234/L3235implements the main featuresof the
broths function:
- Battery Feed (BalancedMode)
- Ringing Injection
- SignallingDetection
- Hybrid Function
The Kit comprises 2 devices, the L3234 ringing
telephone
line.
The
injector fabricated in Bipolarin 140V Technology.
Its function is to amplify and inject in balanced
mode with zero crossing the ringing signal. The
device requires an external positive supply of
100V and a low level sinusoid of approx.
950mVrms. The L3235 Line Feeder is integrated
in 60V Bipolar Technology. The L3235 provides
batteryfeed to the line with programmablecurrent
limitation. The two to four wire voice frequency
signal conversion is implemented by the L3235
and line terminating and balance impedances are
externally programmable. The L3234/L3235kit is
designed for low power dissipation. In a short
loop conditionthe extra power is dissipated on an
external transistor. The Kit is
wire parallel bus and interfaces easily to all first
and programmable second generation COMBOS.
(seefigg. 1 and 2)
controlled by five
HEPTAWATT
ORDERING NUMBER:
L3234
PLCC28
ORDERING NUMBER:
L3235
L3234
L3235
HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX
AND KEY SYSTEM APPLICATIONS
1/26
相關PDF資料 |
PDF描述 |
|---|---|
| L3235T | Subscriber Line Interface Circuit |
| L3234 | CAP CER 1.5UF 50V 20% X7R 1812 |
| L3235N | HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX AND KEY SYSTEM APPLICATIONS |
| L3235 | CAP CER 1.5UF 100V 10% X7R 1812 |
| L34024 | Optoelectronic |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L3235 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX AND KEY SYSTEM APPLICATIONS |
| L3235-D2 | 功能描述:射頻無線雜項 SLIC PABX & Key Sys RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| L3235-D2/TR | 功能描述:電信集成電路 SLIC PABX & Key Sys RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| L3235N | 功能描述:電信集成電路 SLIC PABX & Key Sys RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| L3235N-TR | 制造商:STMicroelectronics 功能描述:SLIC 49DB 77MA 5V/100V 44TQFP - Tape and Reel |
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