LE75183BSC8 datasheet, PDF - EEWORLD Datasheet

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LE75183BSC8: DescriptionTelecom Circuit, 1-Func, PDSO28, PLASTIC, SOIC-28; CategoryWireless rf/communication Telecom circuit; File Size378KB，24 Pages; ManufacturerMicrosemi; Websitehttps://www.microsemi.com

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LE75183BSC8 Overview

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

LE75183BSC8 Parametric

Parameter Name	Attribute value
Maker	Microsemi
Parts packaging code	SOIC
package instruction	SOP,
Contacts	28
Reach Compliance Code	unknown
JESD-30 code	R-PDSO-G28
length	17.9 mm
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	2.65 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
width	7.5 mm

LE75183BSC8 Preview

A D V A N C E D

D A T A

S H E E T

™

Le75183

Line Card Access Switch

VoiceEdge™ Family 75 Series of Line Card Access Switches

APPLICATIONS

Central office

DLC

PBX

DAML

HFC/FITL

DESCRIPTION

The VoiceEdge™ family 75 series of Line Card Access

Switches (LCAS), which includes the Le75181, Le75282 and

Le75183 devices, is a family of monolithic solid-state switches

that is designed to provide both power ringing access and test

access on the analog line card. These devices, while not a pin-

for-pin replacement for the traditional electromechanical relay

(EMR) solution, provide the equivalent switching functionality.

The VoiceEdge™ family 75 series of LCAS is meant as a solid-

state alternative to the EMRs.

The Le75183A/B/C/D devices are pin-for-pin compatible with

Legerity’s L7583A/B/C/D devices.

Legerity also offers a range of compatible SLIC devices and

codec/filters that can be used with the VoiceEdge™ family 75

series LCAS for complete line card solutions that can be used

worldwide in analog line card 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

Latched logic level inputs, no drive circuitry

Only one external protector required

TTL logic control compatible

Default power up state

BLOCK DIAGRAM

Le75183A/C

FGND

SCR

& Trip

Circuit

VBAT

SW1

SW2

TTESTin

TBAT

TLINE

SW3

SW5

SW4

SW6

RTESTin

RBAT

RLINE

RRINGING

RELATED LITERATURE

081123 Le75282 Dual Intelligent Line Card Access Switch Data

Sheet

081105 Le75181 Ringing Access Switch Data Sheet

080754 Le58QL061/063 QLSLAC Data Sheet

080676 Le5711 Dual SLIC Data Sheet

081047 Le5712 Dual SLIC Data Sheet

TRINGING

SW7

SW8

SW10

TTESTout

SW9

RTESTout

LATCH

VDD

TSD

DGND

Control

Logic

INTESTin

INRING

INTESTout

ORDERING INFORMATION

Device

Le75183ASC

Le75183BSC

Le75183CSC

Le75183DSC

Le75183AQC

Le75183BQC

Le75183CQC

Le75183DQC

Le75183ASC8

Le75183BSC8

Le75183CSC8

Le75183DSC8

28-pin SOIC (GULL)

VDD

Le75183B/D

Package

FGND

VBAT

20-Pin SOIC (GULL)

TTESTin

TBAT

TLINE

SW3

SW5

SW4

SW6

SW1

SW2

RTESTin

RBAT

RLINE

RRINGING

32-Pin QFN

TRINGING

SW7

SW8

TTESTout

SW9

SW10

RTESTout

LATCH

INTESTin

Control

TSD

Logic

INRING

DGND

INTESTout

Document ID#

081105 Date:

Sept 19, 2003

Rev:

Version: 1

Distribution:

Internal only

A D V A N C E D

D A T A

S H E E T

TABLE OF CONTENTS

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Related literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Pin Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Environmental Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Electrical Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Handling Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Summary of Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Supply Currents and Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Device Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Zero Cross Current Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Switching Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Loss of Battery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Impulse Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Integrated SLIC Device Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Physical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

28-Pin, Plastic SOIC (GULL) (Le75183AS8/BS8/CS8/DS8) . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

20-Pin, Plastic SOIC (GULL) (Le75183AS/BS/CS/DS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

32-Pin QFN (Le75183AQ/BQ/CQ/DQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Le75183 VoiceEdge™ Family 75 Series Data Sheet

A D V A N C E D

D A T A

S H E E T

PRODUCT DESCRIPTION

The Le75183A/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 Le75183 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 additional pair of solid-state contacts are also available to provide

access for testing of the ringing generator.

The Le75183A/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 (test out) state (loop access (test out) switches closed, all

other 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 Le75183A/B are also in the Le75183C/D, with an additional simultaneous test-out and

ring-test state, making the Le75183C/D appropriate for digital loop carrier and other Telcordia TR-57 applications.

The Le75183 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 circuitry. State control is via logic level inputs,

so no additional driver circuitry is required.

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 protection,

to prevent breakdown in the presence of a transient fault condition (i.e., passing the transient on to the ringing generator).

Incorporated into the Le75183A and Le75183C 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

block diagram as version A/C. 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.

The Le75183B and Le75183D versions provide only an integrated diode bridge along with current limiting and thermal shutdown

(see block diagram for version B/D). This will cause positive 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 mechanisms.

To protect the Le75183 from an overvoltage fault condition, use of a secondary protector is required. The secondary protector

must limit the voltage seen at the tip/ring terminals to prevent the breakdown voltage of the switches from being exceeded. To

minimize stress on the solid-state contacts, use of a foldback- or crowbar- type secondary protector is recommended. With proper

choice of secondary protection, a line card using the Le75183 will meet all relevant ITU-T, LSSGR, FCC, or UL* protection

requirements.

The Le75183 operates off of a 5-V supply only. This gives the device extremely low idle and active power dissipation and allows

use with virtually any range of battery voltage. This makes the Le75183 especially appropriate for remote power applications

such as DAML or FOC/FITL or other Telcordia TA 909 applications where power dissipation is particularly critical.

A battery voltage is also used by the Le75183, only as a reference for the integrated protection circuit. The Le75183 will enter an

all OFF state upon loss of battery.

During power ringing, to turn on and maintain the ON state, the ring access switch and ring test switch will draw a nominal 2 mA

from the ring generator.

The default power up state of Le75183 is in all OFF state, unless otherwise being overwritten by external controls.

The Le75183 device is packaged in a 20-pin, plastic SOIC (GULL) (Le75183ASC/BSC/CSC/DSC), a 32-pin QFN (Le75183AQC/

BQC/CQC/DQC), and a 28-pin, plastic SOIC (GULL) (Le75183ASC8/BSC8/CSC8/DSC8). The 28-pin package is available to

support existing designs. For new designs, it may be advantageous to use the other two packages for samller in size.

Le75183 VoiceEdge™ Family 75 Series Data Sheet

A D V A N C E D

D A T A

S H E E T

PIN INFORMATION

Connection Diagrams

(Preliminary on 32-pin QFN)

TTESTin

FGND

TBAT

TLINE

TRINGING

TTESTout

Top View

VBAT

RTESTin

RBAT

RLINE

RRINGING

RTESTout

32-pin QFN

EXPOSED PAD

DGND

INRING

INTESTout

INTESTin

FGND

TTESTin

TBAT

TLINE

TRINGING

TTESTout

VDD

TSD

DGND

VBAT

RTESTin

RBAT

RLINE

RRINGING

RTESTout

LATCH

INTESTin

INRING

INTESTout

FGND

TTESTin

TBAT

TLINE

LATCH

VDD

TSD

VBAT

RTESTin

RBAT

RLINE

RRINGING

RTESTout

LATCH

INTESTin

INRING

INTESTout

20-Pin SOIC

28-Pin SOIC

TRINGING

TTESTout

VDD

TSD

DGND

Le75183 VoiceEdge™ Family 75 Series Data Sheet

A D V A N C E D

D A T A

S H E E T

Pin Descriptions .

Pin Name

GND

INRING

INTESTIN

INTESTOUT

LATCH

BAT

LINE

RINGING

RTESTin

RTESTout

BAT

LINE

RINGING

TTESTin

TTESTout

Type

Ground

Input

—

Input/Output

Digital ground.

Fault ground.

Logic level switch input control. Internally 75 k

Ω

typical pull up.

Logic level switch input control. Internally 75 k

Ω

typical pull down.

Logic level switch input control. Internally 75 k

Ω

typical pull up.

Data input control, active-high, transparent low. Internally 75 k

Ω

typical pull down.

No connection.

Connect to RING on SLIC side.

Connect to RING on line side.

Connect to ringing generator.

Test (in) access on RING.

Test (out) access on RING.

Connect to TIP on SLIC side.

Connect to TIP on line side.

Connect to return ground for ringing generator.

Test (in) access on TIP.

Test (out) access on TIP.

Temperature shutdown pin. Can be used as a logic level input or an output. See Tables 12

and 13, Truth Tables, and the Switching Behavior section of this data sheet for input pin

description. As an output flag, will read HIGH when the device is in its operational mode

and LOW in the thermal shutdown mode. To disable the thermal shutdown mechanism, tie

this pin to HIGH (not recommended)

Battery voltage. Used as a reference for protection circuit.

5 V supply.

The exposed pad in QFN package is internally connected to digital ground.

Description

Input/Output

BAT

EPAD

Battery

Power

Ground

D: Internally 75 kΩ typical pull down.

U: Internally 75 kΩ typical pull up.

Le75183 VoiceEdge™ Family 75 Series Data Sheet

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