Datasheet > LULC8583DAJ-DT

LULC8583DAJ-DT

更新时间： 2024-11-27 23:48:51

品牌	Logo	应用领域
其他 - ETC		开关
页数	文件大小	规格书
4页	101K
描述
Analog Switch

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LULC8583DAJ-DT 数据手册

Product Brief

June 2002

L8583D Line Card Access Switch

The L8583D has eight 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), simultaneous test-out and ring-test

state (ring and test out switches closed), and an all-

off state. The L8583D is appropriate for central office,

access, digital loop carrier, and other Telcordia Tech-

nologies™ 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 L8583D 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 circuitry

is required.

■ Latched logic level inputs, no driver circuitry

■ Only one external protector required

Applications

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).

■ Central office

■ DLC

■ PBX

■ DAML

■ HFC/FITL

The L8583D provides an integrated diode bridge

along with current limiting and thermal shutdown for

protection of the device itself and the subsequent

subscriber line integrated circuit (SLIC). For LCAS

protection, power cross is reduced by the current-

limiting and thermal shutdown circuits and lightning

reduced by the current-limit circuit. Residue faults are

shunted from the SLIC by the diode bridge.

Description

The Agere Systems Inc. L8583D line card access

switch is a monolithic solid-state device providing

the equivalent switching functionality of three 2-form

C switches. The L8583D 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 analog line card applications. An addi-

tional pair of solid-state contacts are also available to

provide access for testing of the ringing generator.

12 3 4

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