音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

L3235 Datasheet

  • L3235

  • HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX AND KEY SYSTEM A...

  • 457.68KB

  • 26頁

  • STMICROELECTRONICS   STMICROELECTRONICS

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

L3234
L3235
HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX
AND KEY SYSTEM APPLICATIONS
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
PARALLEL LATCHED DIGITAL INTERFACE
SIGNALLING FUNCTIONS (OFF HOOK,
GND-KEY)
LOW NUMBER OF EXTERNAL COMPO-
NENTS
INTEGRATED THERMAL PROTECTION
INTEGRATED OVER CURRENT PROTEC-
TION
0擄C TO 70擄C: L3234/L3235
-40擄C TO 85擄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 re-
quired 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.
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
battery feed to the line with programmable current
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/L3235 kit is
designed for low power dissipation. In a short
loop condition the extra power is dissipated on an
external transistor. The Kit is controlled by five
wire parallel bus and interfaces easily to all first
and programmable second generation COMBOS.
(see figg. 1 and 2)
Janauary 1995
1/26
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

L3235相關(guān)型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！