Datasheet > HT18_07

HT18_07

更新时间： 2024-11-23 03:42:55

品牌	Logo	应用领域
超科 - SUPERTEX		开关电子电话
页数	文件大小	规格书
4页	369K
描述
Electronic Telephone Line Switch

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

HT18_07 数据手册

HT18/ HT19

Electronic Telephone Line Switch

Features

General Description

The Supertex HT18LG and HT19LG are electronic line switch

circuits that replace the mechanical hook switch contact or a

discrete hook switch in a telephone handset or modem. They

switch the positive side of the telephone line using control

inputs that are referenced to the negative side of the line. In

their off state, they can withstand 350V on the positive input.

In their on state, they have a maximum series resistance of

18Ω.

► 350V breakdown voltage

► 18Ω maximum switch resistance

► Current limiting protection

► Operates at 2.3V input

Applications

► Telephone handsets

► Modems

► Fax machines

► Answering machines

► Remote meter reading

► Telephone interface products

The devices provide current limiting determined by an

external resistor. There are three control inputs. The HKS

pin turns on the hook switch when connected to the TPG

pin. This can be accomplished by using a mechanical switch

which closes when the handset is physically off-hook. The

LS pin allows a logic signal to turn on the hook switch. The

dial pulse, Pin 6, is used to turn the hook switch off for pulse

dialing. For the HT18, the dial pulse is active high (DP),

whereas for the HT19, it is active low (DP).

Typical Application Circuit

TPG

HKS

Tip

R_SEN

HT18

HT19

Transient

Protection

Telecom

Circuit

15V

DP/DP

Ring

GND

12 3 4

中文翻译

下载PDF

与HT18_07相关器件

型号	品牌	获取价格	描述	数据表
HT18000000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT18002000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT18004000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT18005000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT18006000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT18008000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block,
HT18009000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT1800C000J0G	AMPHENOL	获取价格	Barrier Strip Terminal Block
HT1802L	HYES	获取价格	LCD MODULE (128 × RGB × 160 Dots)
HT181K	CDE	获取价格	Ceramic Capacitors