LE75181CBSC

™ Le75181 Ringing Access Switch VE750 Series APPLICATIONS DESCRIPTION „ „ „ „ „ The VoiceEdge™ family VE750 series of Line Card Access Switches (LCAS) 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 LCAS is meant as a solid-state alternative to the EMRs. Central office DLC PBX DAML HFC/FITL FEATURES The Le75181A/B device is pin-for-pin compatible with Zarlink’s L7581A/B device, and the Le75181C device is pinfor-pin compatible with Zarlink’s L8581A device. „ „ „ „ „ „ „ Small size/surface-mount packaging „ „ „ „ „ „ „ 5 V only operation, very low power consumption 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 Battery monitor, all OFF state upon loss of battery Zarlink 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. BLOCK DIAGRAM Le75181A/C FGND VBAT SCR & Trip Circuit No EMI Latched logic level inputs, no drive circuitry TBAT Only one external protector required TTL logic control compatible RBAT TLINE SW1 SW2 RLINE Default power up state TRINGING RRINGING SW3 RELATED LITERATURE SW4 LATCH „ 081123 Le75282 Dual Intelligent Line Card Access VDD Switch Data Sheet „ „ „ „ INPUT 081126 Le75183 Line Card Access Switch Data Sheet Temperature Shutdown TSD 080676 Le5711 Dual SLIC Data Sheet Le75181B 081047 Le5712 Dual SLIC Data Sheet FGND ORDERING INFORMATION Device Package Type1 LE75181BBSC VBAT TBAT Packing2 RBAT TLINE SW1 RLINE SW2 SW3 LE75181ABSC SW4 16-Pin SOIC, GULL (Green) Tube TRINGING RRINGING LE75181CBSC 1. The green package meets RoHS Directive 2002/95/EC of the European Council to minimize the environmental impact of electrical equipment. LATCH VDD INPUT Temperature Shutdown 2. DGND 080754 Le58QL061/063 QLSLAC Data Sheet For delivery using a tape and reel packing system, add a "T" suffix to the OPN (Ordering Part Number) when placing an order. TSD DGND Document ID# 081105 Date: Sep 18, 2007 Rev: E Version: 2 Distribution: Public Document Le75181 Data Sheet TABLE OF CONTENTS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Related literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Environmental Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Electrical Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Summary of Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Supply Currents and Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Device Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Zero Cross Current Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Switching Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Loss of Battery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Impulse Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Integrated SLIC Device Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Physical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 16-Pin, Plastic SOIC (GULL) (ASC/BSC/CSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Revision A1 to B1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Revision B1 to C1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Revision C1 to D1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Revision D1 to E1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Revision E1 to E2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 2 Zarlink Semiconductor Inc. Le75181 Data Sheet PRODUCT DESCRIPTION The Le75181 Ringing Access Switch is a monolithic solid-state device that provides the switching functionality of a two-form C switch. The Le75181 is designed to provide power ringing access 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. The Le75181 has three states: the idle talk state (line break switches closed, ringing access switches open), power ringing state (line break switches open, ringing access switches closed), and all OFF state. The Le75181 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 load 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 Le75181A and Le75181C 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 (see block diagram). 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 Le75181B version provides only an integrated diode bridge along with current limiting and thermal shutdown, as shown in the block diagram. 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. The default power up state is in Idle/Talk state unless otherwise being overwritten by external controls. To protect the Le75181 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 Le75181 will meet all relevant ITU-T, LSSGR, FCC, or UL* protection requirements. The Le75181 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 Le75181 especially appropriate for remote power applications such as DAML or FOC/FITL or other Bellcore TA 909 applications where power dissipation is particularly critical. A battery voltage is also used by the Le75181, only as a reference for the integrated protection circuit. The Le75181 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 will draw a nominal 2 mA from the ring generator. The Le75181ASC/BSC/CSC device is packaged in a 16-pin, plastic SOIC (GULL) package. 3 Zarlink Semiconductor Inc. Le75181 Data Sheet CONNECTION DIAGRAMS Figure 1. 16-Pin SOIC FGND 1 16 VBAT TBAT 2 15 RBAT TLINE 3 14 RLINE NC 4 13 NC 16-Pin SOIC NC 5 12 RRINGING TRINGING 6 11 LATCH VDD 7 10 INPUT TSD 8 9 DGND Pin Descriptions Pin Name Type DGND Ground Digital ground. Description Fault ground. FGND Ground INPUT Input Logic level input switch control. Internally 75 kΩ typical pull down. LATCH Input Data latch control, active-high, transparent low. Internally 75 kΩ typical pull down. NC — RBAT Input/Output Connect to RING on SLIC side. RLINE Input/Output Connect to RING on line side. RRINGING Input/Output Connect to ringing generator. TBAT Input/Output Connect to TIP on SLIC side. TLINE Input/Output Connect to TIP on line side. TRINGING Input/Output Connect to return ground for ringing generator. Input/Output Temperature shutdown pin. Can be used as a logic level input or output. See table 8, truth table, on page 15, and the Switching Behavior section of this data sheet for input pin description. As an output, will read HIGH when device is in its operational mode and LOW in the thermal shutdown mode. In the Le75181, the thermal shutdown mechanism cannot be disabled. TSD VBAT Input VDD Power No connection. Battery voltage. Used as a reference for protection circuit. 5-V supply. 4 Zarlink Semiconductor Inc. Le75181 Data Sheet ABSOLUTE MAXIMUM RATINGS Stresses above those listed under Absolute Maximum Ratings may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. Parameter Operating Temperature Range Storage Temperature Range Relative Humidity Range Pin Soldering Temperature (t=10 s max) 5-V Power Supply Battery Supply Logic Input Voltage Input-to-output Isolation Pole-to-pole Isolation (All except SW 4) Pole-to-pole Isolation (Ringing Access Switch, SW4) ESD Immunity (Human Body Model) Min Max Unit –40 110 °C –40 150 °C 5 95 % — 260 °C -0.3 7 V — –85 V -0.3 VDD+0.3 V — 330 V — 330 V — 480 V JESD22 Class 1C compliant Package Assembly Green package devices are assembled with enhanced, environmental compatible lead-free, halogen-free, and antimony-free materials. The leads possess a matte-tin plating which is compatible with conventional board assembly processes or newer leadfree board assembly processes. The peak soldering temperature should not exceed 245°C during printed circuit board assembly. Refer to IPC/JEDEC J-Std-020B Table 5-2 for the recommended solder reflow temperature profile. OPERATING RANGES Environmental Ranges Zarlink guarantees the performance of this device over commercial (0 to 70º C) and industrial (-40 to 85ºC) temperature ranges by conducting electrical characterization over each range and by conducting a production test with single insertion coupled to periodic sampling. These characterization and test procedures comply with section 4.6.2 of Bellcore GR-357-CORE Component Reliability Assurance Requirements for Telecommunications Equipment. −40° to 85°C Ambient Temperature Electrical Ranges Min Typ Max VDD Supply 4.5 5 5.5 VBAT* –19 — –72 Unit V *VBAT is used only as a reference for internal protection circuitry. If VBAT rises above –10 V, the device will enter an all OFF state and remain in this state until the battery voltage drops below –15 V. 5 Zarlink Semiconductor Inc. Le75181 Data Sheet ELECTRICAL CHARACTERISTICS Summary of Assumptions Unless otherwise noted, the test conditions are defined by the Le75181 device application circuit shown in Figure 7, on page 14 with: VBAT = −48 V, VDD = 5.0 V. Supply Currents and Power Dissipation IBAT µA IDD mA Operational State LCAS Device Power mW Condition Min. Typ Max Min. Typ Max Min. Typ Max Power Ringing VDD=5V, VBAT=-48V — 0.850 2.1 — 4 10 — 6 11 Idle/Talk VDD=5V, VBAT=-48V — 0.560 1.1 — 4 10 — 3 6 SPECIFICATIONS Device Specifications Table 1. Break Switches, 1 and 2 Parameter OFF-state Leakage Current: +25 °C +85 °C –40 °C Test Condition Measure Min Typ Max Unit Iswitch — — 1 Iswitch — — 1 Iswitch — — 1 ∆ VON ∆ VON ∆ VON — — — 21.5 — 16 — 31 — — 0.2 1.0 Ω — — 220 V Vswitch (differential) = –320 V to Gnd Vswitch (differential) = –60 V to +260 V Vswitch (differential) = –330 V to Gnd Vswitch (differential) = –60 V to +270 V Vswitch (differential) = –310 V to Gnd Vswitch (differential) = –60 V to +250 V µA ON-resistance (SW1, SW2): +25 °C +85 °C –40 °C ON-resistance Match ON-state Voltage* (Figure 5, Switch 1) ON-state Voltage* (Figure 6, Switch 2) TLINE = ±10 mA, ±40 mA, TBAT = –2 V TLINE = ±10 mA, ±40 mA, TBAT = –2 V TLINE = ±10 mA, ±40 mA, TBAT = –2 V Per ON-resistance test Magnitude condition of SW1, SW2 RON SW1 – RON SW2 Iswitch = ILIMIT @ 50 Hz/60 Hz VON Maximum Differential Voltage (Vmax) VON — — 320 Foldback Voltage Breakpoint 1 (V1) VON 100 — — Foldback Voltage Breakpoint 2 (V2) VON V1+0.5 — — Iswitch — — — 250 Ω V dc Current Limit (Figure 5, Switch 1): +85 °C Vswitch (on) = ±10 V –40 °C Vswitch (on) = ±10 V Iswitch 80 — dc Current Limit ILIMIT1 Iswitch 80 — 250 (Figure 6, Switch 2): ILIMIT2 Iswitch 1 — — Dynamic Current Limit (t =