LE75183DFSC

LE75183DFSC Datasheet

- 081123 Le75282 Dual Intelligent Line Card Access Switch Data Sheet

Part	Datasheet
LE75183DFSC	LE75183DFSC (pdf)

Related Parts	Information
LE75183DDSC	LE75183DDSC
LE75183DFQC	LE75183DFQC
LE75183DFSCT	LE75183DFSCT
LE75183DDSCT	LE75183DDSCT
LE75183DFQCT	LE75183DFQCT

PDF Datasheet Preview
Voice Solution - Central office - DLC - PBX - DAML - HFC/FITL - 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 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 Le75183 Line Card Access Switch VE750 Series The VoiceEdge family VE750 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 pinfor-pin replacement for the traditional electromechanical relay EMR solution, provide the equivalent switching functionality. The VE750 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 VE750 series LCAS for complete line card solutions that can be used worldwide in analog line card applications. ORDERING INFORMATION Device Le75183ADSC Le75183BDSC Le75183CDSC Le75183DDSC LE75183AFQC Le75183BFQC Le75183CFQC Le75183DFQC Le75183AFSC Le75183BFSC Le75183CFSC Le75183CZFSC Le75183DFSC Package Type1 20-Pin SOIC GULL 32-Pin QFN 28-pin SOIC GULL Packing2 Tube Tray Tube The green package meets RoHS Directive 2002/95/EC of the European Council to minimize the environmental impact of electrical equipment. For delivery using a tape and reel packing system, add a "T" suffix to the OPN Ordering Part Number when placing an order. NOTE On August 3, 2007, Zarlink Semiconductor acquired the products and Document ID# 081105 Date Sep 18, 2007 technology of Legerity Holdings. Version 2 Distribution Public Document Le75183 Data Sheet TABLE OF CONTENTS Applications Features Related literature Ordering Information Description. Product Description Block Diagrams Connection Diagrams Pin Descriptions Absolute Maximum Ratings Operating Ranges Zarlink Semiconductor Inc. Le75183 Data Sheet 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 Le75183AESC/BESC/CESC/CZESC/DESC . The 28-pin package is available to support existing designs. For new designs, it may be advantageous to use the other two packages for smaller in size. Zarlink Semiconductor Inc. BLOCK DIAGRAMS Le75183 FGND Figure Le75183A/C Le75183A/C SCR & Trip Circuit VBAT TTESTin TBAT TLINE TRINGING SW3 SW5 TTESTout VDD TSD DGND RTESTin SW4 SW6 RBAT RLINE RRINGING SW8 SW10 RTESTout LATCH Control Logic INTESTin INRING INTESTout Figure Le75183B/D • Added green package OPNs in Ordering Information, on page 1 removed non-green OPNs. • Added notes to table in Ordering Information, on page • Added Package Assembly, on page 7 • Enhanced format of package drawings in Physical Dimensions, on page 22 • Added new headers/footers due to Zarlink purchase of Legerity on August 3, 2007 Zarlink Semiconductor Inc. For more information about all Zarlink products visit our Web Site at: Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries collectively “Zarlink” is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink. This publication is issued to provide information only and unless agreed by Zarlink in writing may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user’s responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink’s conditions of sale which are available on request. Purchase of Zarlink’s I2C components conveys a licence under the Philips I2C Patent rights to use these components in an I2C System, provided that the system conforms to the I2C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo are trademarks, and Legerity, the Legerity logo and combinations thereof are registered trademarks of Zarlink Semiconductor Inc. All other trademarks and registered trademarks are the property of their respective owners. 2007 Zarlink Semiconductor Inc. All Rights Reserved. TECHNICAL DOCUMENTATION - NOT FOR RESALE

PDF Datasheet Preview

Voice Solution
- Central office - DLC - PBX - DAML - HFC/FITL
- 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

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

Le75183

Line Card Access Switch VE750 Series

The VoiceEdge family VE750 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 pinfor-pin replacement for the traditional electromechanical relay EMR solution, provide the equivalent switching functionality. The VE750 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 VE750 series LCAS for complete line card solutions that can be used worldwide in analog line card applications.
ORDERING INFORMATION

Device Le75183ADSC Le75183BDSC Le75183CDSC Le75183DDSC LE75183AFQC Le75183BFQC Le75183CFQC Le75183DFQC Le75183AFSC Le75183BFSC Le75183CFSC Le75183CZFSC Le75183DFSC

Package Type1 20-Pin SOIC GULL
32-Pin QFN
28-pin SOIC GULL

Packing2 Tube Tray

Tube

The green package meets RoHS Directive 2002/95/EC of the European Council to minimize the environmental impact of electrical equipment.
For delivery using a tape and reel packing system, add a "T" suffix to the OPN Ordering Part Number when placing an order.

NOTE On August 3, 2007, Zarlink Semiconductor acquired the products and Document ID# 081105 Date Sep 18, 2007
technology of Legerity Holdings.

Version 2

Distribution Public Document

Le75183

Data Sheet

TABLE OF CONTENTS
Applications Features Related literature Ordering Information Description. Product Description Block Diagrams Connection Diagrams

Pin Descriptions Absolute Maximum Ratings Operating Ranges

Zarlink Semiconductor Inc.

Le75183

Data Sheet

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 Le75183AESC/BESC/CESC/CZESC/DESC . The 28-pin package is available to support existing designs. For new designs, it may be advantageous to use the other two packages for smaller in size.

Zarlink Semiconductor Inc.

BLOCK DIAGRAMS

Le75183

FGND

Figure Le75183A/C

Le75183A/C

SCR & Trip Circuit

VBAT

TTESTin

TBAT TLINE TRINGING

SW3 SW5

TTESTout

VDD TSD DGND

RTESTin

SW4 SW6

RBAT RLINE

RRINGING

SW8 SW10

RTESTout LATCH

Control Logic

INTESTin INRING

INTESTout

Figure Le75183B/D
• Added green package OPNs in Ordering Information, on page 1 removed non-green OPNs.
• Added notes to table in Ordering Information, on page
• Added Package Assembly, on page 7
• Enhanced format of package drawings in Physical Dimensions, on page 22
• Added new headers/footers due to Zarlink purchase of Legerity on August 3, 2007

Zarlink Semiconductor Inc.

For more information about all Zarlink products visit our Web Site at:

Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries collectively “Zarlink” is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink.

This publication is issued to provide information only and unless agreed by Zarlink in writing may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user’s responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink’s conditions of sale which are available on request.

Purchase of Zarlink’s I2C components conveys a licence under the Philips I2C Patent rights to use these components in an I2C System, provided that the system conforms to the I2C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo are trademarks, and Legerity, the Legerity logo and combinations thereof are registered trademarks of Zarlink Semiconductor Inc. All other trademarks and registered trademarks are the property of their respective owners. 2007 Zarlink Semiconductor Inc. All Rights Reserved.

TECHNICAL DOCUMENTATION - NOT FOR RESALE

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived LE75183DFSC Datasheet file may be downloaded here without warranties.

Datasheet ID: LE75183DFSC 648978