Datasheet > L7583A

L7583A

更新时间： 2024-02-07 08:11:08

品牌	Logo	应用领域
杰尔 - AGERE		/
页数	文件大小	规格书
20页	470K
描述
Line Card Access Switch

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L7583A 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Base Number Matches：	1

L7583A 数据手册

Data Sheet

February 2001

L7583A/B/C/D Line Card Access Switch

The L7583A/B has seven states: the idle talk state

(line break switches closed, all other switches open),

the power ringing state (ringing access switches

closed, all other switches open), loop access state

(loop access switches closed, all switches open),

SLIC test state (test in switches closed, all other

switches open), simultaneous loop and SLIC

access state (loop and test in switches closed, all

others open), ringing generator test state (ring test

switches closed, all others open), and an all OFF

state. The seven states in the L7583A/B are also in

the L7583C/D, with an additional simultaneous test-

out and ring-test state, making the L7583C/D appro-

priate for digital loop carrier and other Bellcore TR-57

applications.

Features

■ Small size/surface-mount packaging

■ Monolithic IC reliability

■ 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 L7583 offers break-before-make or make-

before-break switching, with simple logic level input

control. Because of the solid-state construction, volt-

age transients generated when switching into an

inductive ringing lead during ring cadence or ring trip

are minimized, possibly eliminating the need for

external zero cross switching circuitry. State control

is via logic level inputs, so no additional driver cir-

cuitry is required.

■ Latched logic level inputs, no driver circuitry

■ Only one external protector required

Applications

■ Central office

■ DLC

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).

■ PBX

■ DAML

■ HFC/FITL

Incorporated into the L7583Axx and L7583Cxx is a

diode bridge/SCR clamping circuit, current-limiting

circuitry, and a thermal shutdown mechanism to pro-

vide protection to the SLIC device and subsequent

circuitry during fault conditions. This is shown in Fig-

ure 1 as version A. 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 ther-

mal shutdown circuits.

Description

The L7583A/B/C/D Line Card Access Switch is a

monolithic solid-state device providing the equivalent

switching functionality of three 2 form C switches.

The L7583 is designed to provide power ringing

access, line test access (test out), and SLIC test

access (test in) 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. An additional pair of solid-

state contacts are also available to provide access

for testing of the ringing generator.

12 3 4 5 6 7...20

中文翻译

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与L7583A相关器件

型号	品牌	获取价格	描述	数据表
L7583AAJ	ETC	获取价格	Telecomm/Datacomm
L7583AF	ETC	获取价格	Telecomm/Datacomm
L7583BAJ	ETC	获取价格	Telecomm/Datacomm
L7583BF	ETC	获取价格	Telecomm/Datacomm
L7583CAJ	ETC	获取价格	Telecomm/Datacomm
L7583CF	ETC	获取价格	Telecomm/Datacomm
L7583DAJ	ETC	获取价格	Telecomm/Datacomm
L7583DF	ETC	获取价格	Telecomm/Datacomm
L7585F	AGERE	获取价格	Full-Feature,Low-Power SLIC and Switch
L7585G	AGERE	获取价格	Full-Feature,Low-Power SLIC and Switch

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