Datasheet > ATTL7581BAE

ATTL7581BAE

更新时间： 2024-09-20 22:39:19

品牌	Logo	应用领域
杰尔 - AGERE		/
页数	文件大小	规格书
16页	298K
描述
Ringing Access Switch

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ATTL7581BAE 数据手册

Data Sheet

November 1999

L7581 Ringing Access Switch

states: the idle talk state (line break switches closed,

ringing access switches open), the power ringing

state (line break switches open, ringing access

switches closed), and an all OFF state.

Features

■ Small size/surface-mount packaging

■ Monolithic IC reliability

The L7581 offers break-before-make or make-before-

break switching, with simple logic level input control.

Because of the solid-state construction, voltage tran-

sients generated when switching into an inductive

ringing load during ring cadence or ring trip are mini-

mized, possibly eliminating the need for external zero

cross switching circuitry. State control is via logic

level inputs, so no additional driver circuitry is

required.

■ Low impulse noise

■ Make-before-break, break-before-make operation

■ Clean, bounce-free switching

■ Low, matched ON-resistance

■ Built-in current limiting, thermal shutdown, and

SLIC protection

■ 5 V only operation, very low power consumption

■ Battery monitor, all OFF state upon loss of battery

■ No EMI

The line break switch is a linear switch that has

exceptionally low ON-resistance and an excellent

ON-resistance matching characteristic. The ringing

access switch has a breakdown voltage rating

>480 V which is sufficiently high, with proper protec-

tion, to prevent breakdown in the presence of a tran-

sient fault condition (i.e., passing the transient on to

the ringing generator).

■ Latched logic level inputs, no drive circuitry

■ Only one external protector required

Incorporated into the L7581Axx is a diode bridge/

SCR clamping circuit, current-limiting circuitry, and a

thermal shutdown mechanism to provide protection

to the SLIC device and subsequent circuitry during

fault conditions (see Figure 1). Positive and negative

lightning is reduced by the current-limiting circuitry

and steered to ground via diodes and the integrated

SCR. Power cross is also reduced by the current-

limiting and thermal shutdown circuits.

Applications

■ Central office

■ DLC

■ PBX

■ DAML

■ HFC/FITL

The L7581Bxx version provides only an integrated

diode bridge along with current limiting and thermal

shutdown, as shown in Figure 2. This will cause pos-

itive faults to be directed to ground and negative

faults to battery. In either polarity, faults are reduced

by the current-limit and/or thermal shutdown mecha-

nisms.

Description

The L7581 Ringing Access Switch is a monolithic

solid-state device that provides the switching func-

tionality of a 2 form C switch.

The L7581 is designed to provide power ringing

access to tip and ring in central office, digital loop

carrier, private branch exchange, digitally added

main line, and hybrid fiber coax/fiber-in-the-loop ana-

log line card applications. The L7581 has three

12 3 4 5 6 7...16

中文翻译

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与ATTL7581BAE相关器件

型号	品牌	获取价格	描述	数据表
ATTL7581BAE-TR	AGERE	获取价格	Ringing Access Switch
ATTL7581BC	AGERE	获取价格	Ringing Access Switch
ATTL7582AAE	AGERE	获取价格	Tip Ring Access Switch
ATTL7582AAE-TR	AGERE	获取价格	Tip Ring Access Switch
ATTL7582AC	AGERE	获取价格	Tip Ring Access Switch
ATTL7582AE	ETC	获取价格	Telecom Switching Circuit
ATTL7582BAE	AGERE	获取价格	Tip Ring Access Switch
ATTL7582BAE-TR	AGERE	获取价格	Tip Ring Access Switch
ATTL7582BC	AGERE	获取价格	Tip Ring Access Switch
ATTL7582BE	ETC	获取价格	Telecom Switching Circuit

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