CPC75282KATR

CPC75282 Line Card Access Switch Features • • • • • • • • • Improved Switch dV/dt Immunity of 1500V/μs Smart logic for power-up/hot-plug state control Small 44-pin TQFP Package Monolithic IC reliability Low, matched RON Eliminates the need for zero-cross switching Flexible switch timing to transition from ringing mode to talk mode. Clean, bounce-free switching Tertiary protection consisting of integrated current limiting, voltage clamping, and thermal shutdown for SLIC protection 5V operation with very low power consumption Intelligent battery monitor Latched logic-level inputs, no external drive circuitry required Description The CPC75282 Dual Line Card Access Switch (LCAS), a member of Clare’s next generation Line Card Access Switch family, is a monolithic solid state device that provides the switching functionality of four 2-Form-C relays in a single, small, economical package. The CPC75282 Dual LCAS device is designed to provide ringing and test access to the telephone loop in Central Office, Digitally Added Main Line, Private Branch Exchange, Digital Loop Carrier, and Hybrid Fiber Coax/Fiber-In-The-Loop analog line card applications. Test access switches provide access to the telephone loop for line (drop) test or message waiting in the PBX application. • • • Ordering Information Part # CPC75282KATR Description 44-Pin TQFP, Tape & Reel (1000/Reel) Applications • • • • • • • • • VoIP Gateways Central Office (CO) Digital Loop Carrier (DLC) PBX Systems Digitally Added Main Line (DAML) Hybrid Fiber Coax (HFC) Fiber In The Loop (FITL) Pair Gain System Channel Banks Figure 1. CPC75282 Block Diagram VDD 9,25 TTEST1 TRINGING1 37 38 SW3 TLINE1 36 1/2 - CPC75282 (Channel 1) X X SW5 X SW1 SW2 Battery Monitor 22 RBAT1 P1 P2 P3 LATCH1 LATCH2 TSD1 TSD2 OFF1 OFF2 21 TBAT1 RLINE1 34 SW4 X X X SW6 CH1 L A T C H 14 15 16 17 18 28 6 19 20 RRINGING1 RTEST1 30 33 CH2 Switch Control Logic 27 FGND1 8,26 VBAT 24 CFG 11,23 DGND Pb RoHS 2002/95/EC e3 1 DS-CPC75282 - R00D www.clare.com CPC75282 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Pinout by Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Pinout by Pin Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.5 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.6 General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.7 Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.7.1 Break Switches, SW1 and SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.7.2 Ringing Return Switch, SW3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.7.3 Ringing Switch, SW4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.7.4 Test Switches, SW5 and SW6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.8 Digital I/O Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.9 Voltage and Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.10 Protection Circuitry Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.11 Truth Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.11.1 Operating States: CFG=0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.11.2 Operating States: CFG=1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Under Voltage Switch Lock-Out Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 Switch Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.2 Switch Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.3 Make-Before-Break Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.4 Make-Before-Break Operation Logic Table (Ringing to Talk Transition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.5 Break-Before-Make Ringing to Talk Transition Logic Sequence CPC7592xA/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.6 Break -Before- Make Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4 Data Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 TSD Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6 Ringing Switch Zero-Cross Current Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 Battery Voltage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9 Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9.1 Diode Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9.2 Current Limiting function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.10 Thermal Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.11 External Protection Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Figure 1: Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Figure 2: Switches 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 Figure 3: Switch 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4 Figure 4: Switches 5-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1.1 Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1.2 Tape & Reel Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 Washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 12 12 13 13 13 13 13 14 14 14 14 15 15 15 15 15 15 16 16 17 17 17 17 17 18 18 18 18 19 19 2 www.clare.com R00D CPC75282 1. Specifications 1.1 Package Pinout RLINE2 NC TLINE2 TTEST2 TRINGING2 NC TRINGING1 TTEST1 TLINE1 NC RLINE1 1.3 Pinout by Pin Number Pin 1 4 6 7 9 RTEST1 NC NC RRINGING1 NC TSD1 FGND1 VBAT VDD CFG DGND Name Description RTEST2 Ring Lead of the Test Bus RRINGING2 Ringing Generator Source TSD2 Temperature Shutdown Pin FGND2 VDD RBAT2 TBAT2 P1 P2 P3 LATCH1 LATCH2 OFF1 OFF2 TBAT1 RBAT1 CFG VDD FGND1 TSD1 Fault Ground +5V Supply Ring Lead to the SLIC Tip Lead to the SLIC Logic Control Input Logic Control Input Logic Control Input Data Latch Enable Control Input Data Latch Enable Control Input All Off Logic Level Input Switch Control All Off Logic Level Input Switch Control Tip Lead to the SLIC Ring Lead to the SLIC Operating States Configuration +5V Supply Fault Ground Temperature Shutdown Pin Pin 1 RTEST2 NC NC RRINGING2 NC TSD2 FGND2 VBAT VDD NC DGND 12 13 14 15 16 17 18 19 20 21 22 24 25 27 28 1.2 Pinout by Channel CH1 27 21 36 38 37 9, 25 33 30 34 22 8, 26 17 28 19 18 6 20 1 4 44 12 RBAT2 TBAT2 P1 P2 P3 LATCH1 LATCH2 OFF1 OFF2 TBAT1 RBAT1 CH2 7 13 42 40 41 Name FGNDx TBATx TLINEx Description 11, 23 14 15 16 24 2, 3, 5, 10, 29, 31, 32, 35, 39, 43 1 2 Fault Ground 1 Tip Lead to the SLIC Tip Lead of the Line Side TRINGINGx Ringing Generator Return TTESTx Tip Lead of the Test Bus VDD +5V Supply RTESTx Ring Lead of the Test Bus RRINGINGx Ringing Generator Source RLINEx Ring Lead of the Line Side RBATx Ring Lead to the SLIC VBAT Battery Supply LATCHx Data Latch Enable Control Input TSDx Temperature Shutdown Pin OFFx All Off Logic Level Input Switch Control 2 DGND Digital Ground P1 Logic Control Input P2 Logic Control Input P3 Logic Control Input CFG Operating States Configuration NC Not Connected 30 32 33 34 35 36 37 38 39 40 41 42 43 44 9, 25 11, 23 8, 26 2, 3, 5, 10, 29, 31, 32, 35, 39, 43 RRINGING1 Ringing Generator Source NC Not Connected RTEST1 Ring Lead of the Test Bus RLINE1 Ring Lead of the Line Side NC TLINE1 TTEST1 Not Connected Tip Lead of the Line Side Tip Lead of the Test Bus TRINGING1 Ringing Generator Return NC Not Connected TRINGING2 Ringing Generator Return TTEST2 Tip Lead of the Test Bus TLINE2 NC RLINE2 VDD DGND VBAT NC Tip Lead of the Line Side Not Connected Ring Lead of the Line Side +5V Supply Digital Ground Battery Supply Not Connected “x” denotes channel number An internal pull-down device is included on this node to set Off as the power-up default state. These pins can also be used as a device reset. If these pins are not used, tie to VDD R00D www.clare.com 3 CPC75282 1.4 Absolute Maximum Ratings Parameter +5V power supply (VDD) Battery Supply DGND to FGND Separation Logic input voltage Logic input to switch output isolation Switch open-contact isolation (SW1, SW2, SW3, SW5, SW6) Switch open-contact Isolation (SW4) Operating relative humidity Operating temperature Storage temperature Minimum Maximum -0.3 -5 -0.3 5 -40 -40 7 -85 +5 VDD + 0.3 320 320 465 95 +110 +150 Unit V V V V V V V % °C °C 1.5 ESD Rating ESD Rating (Human Body Model) 1000V 1.6 General Conditions Unless otherwise specified, minimum and maximum values are production testing requirements. Typical values are characteristic of the device and are the result of engineering evaluations. They are provided for information purposes only and are not part of the testing requirements. Specifications cover the operating temperature range TA = -40°C to +85°C. Also, unless otherwise specified, all testing is performed with VDD = 5VDC, logic low input voltage is 0VDC and logic high voltage is 5VDC. Absolute maximum electrical ratings are at 25°C. Absolute Maximum Ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied. 4 www.clare.com R00D CPC75282 1.7 Switch Specifications 1.7.1 Break Switches, SW1 and SW2 Parameter Test Conditions VSW1 (differential) = TLINE to TBAT VSW2 (differential) = RLINE to RBAT All-Off state. +25°C, VSW (differential) = -320V to gnd VSW (differential) = +260V to -60V +85° C, VSW (differential) = -330V to gnd VSW (differential) = +270V to -60V -40°C, VSW (differential) = -310V to gnd VSW (differential) = +250V to -60V ISW(on) = ±10mA, ±40mA, RBAT and TBAT = -2V On Resistance +25°C +85°C -40°C On Resistance Matching ON-State Voltage 1 Per SW1 & SW2 On Resistance test conditions. Maximum Differential Voltage (Vmax) Foldback Voltage Breakpoint 1 (V1) Foldback Voltage Breakpoint 2 (V2) VSW (on) = ±10V, +25°C DC current limit 1 (ILIM1) VSW (on) = ±10V, +85°C VSW (on) = ±10V, -40°C DC current limit 2 (ILIM2) Dynamic current limit (t =