ATTL7583AAJ-DT datasheet, PDF - EEWORLD Datasheet

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ATTL7583AAJ-DT: DescriptionTelecom Circuit, 1-Func, PDSO28, PLASTIC, SOG-28; CategoryWireless rf/communication Telecom circuit; File Size398KB，21 Pages; ManufacturerMicrosemi; Websitehttps://www.microsemi.com

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ATTL7583AAJ-DT Overview

Telecom Circuit, 1-Func, PDSO28, PLASTIC, SOG-28

ATTL7583AAJ-DT Parametric

Parameter Name	Attribute value
Maker	Microsemi
Parts packaging code	SOIC
package instruction	SOP,
Contacts	28
Reach Compliance Code	compliant
Is Samacsys	N
JESD-30 code	R-PDSO-G28
Number of functions	1
Number of terminals	28
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Certification status	Not Qualified
Maximum seat height	2.67 mm
Nominal supply voltage	5 V
surface mount	YES
Telecom integrated circuit types	TELECOM CIRCUIT
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Base Number Matches	1

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L7583A/B/C/D Line Card Access Switch

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

Latched logic level inputs, no driver circuitry

Only one external protector required

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, mak-

ing the L7583C/D appropriate for digital loop carrier and

other Bellcore TR-57 applications.

The L7583 offers break-before-make or make-before-

break switching, with simple logic level input control.

Because of the solid-state construction, voltage 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 cir-

cuitry. State control is via logic level inputs, so no addi-

tional driver circuitry is required.

The line break switch is a linear switch that has exception-

ally 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 protection,

to prevent breakdown in the presence of a transient fault

condition (i.e., passing the transient on to the ringing gen-

erator).

Incorporated into the L7583Axx and L7583Cxx 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. This is shown in Figure 1 as version A. Posi-

tive and negative lightning is reduced by the current-limit-

ing circuitry and steered to ground via diodes and the

integrated SCR. Power cross is also reduced by the cur-

rent-limiting and thermal shutdown circuits.

Applications

Central office

DLC

PBX

DAML

HFC/FITL

Description

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

lithic 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 analog line card applications. An addi-

tional pair of solid-state contacts are also available to pro-

vide access for testing of the ringing generator.

Document ID#

080968

Rev:

Distribution:

Public

Date:

Version:

Oct 31, 2002

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