Document
INTEGRATED CIRCUITS DIVISION
CPC7593
Line Card Access Switch
Features
• TTL Logic Level Inputs for 3.3V Logic Interfaces • Smart Logic for Power Up / Hot Plug State Control • Improved Switch dV/dt Immunity of 500 V/s • Small 20-pin or 28-pin SOIC Packages • Monolithic IC Reliability • Low, Matched, RON • Eliminates the Need for Zero-cross Switching • Flexible Switch Timing for Transition from Ringing
Mode to Talk Mode. • Clean, Bounce-Free Switching • SLIC Tertiary Protection Via Integrated Current
Limiting, Voltage Clamping, and Thermal Shutdown • 5V Operation with Power Consumption < 10.5 mW • Intelligent Battery Monitor • Logic-Level Inputs, no External Drive Circuitry
Required
Applications
• Standard voice linecards • Integrated Voice and Data (IVD) linecards • 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
Description
The CPC7593 is a member of IXYS Integrated Circuits Division’s next generation Line Card Access Switch (LCAS) family. This monolithic 10-pole line card access switch is available in 20-pin and 28-pin SOIC packages. It provides the necessary functions to replace three 2-Form-C electromechanical relays on analog line cards or combined voice and data line cards found in central office, access, and PBX equipment. The device contains solid state switches for tip and ring line break, ringing injection, and test access. The CPC7593 requires only a +5 V supply and provides stable start up conditioning during system power up and for hot plug insertion applications. Once active, the inputs respond to traditional TTL logic levels enabling the CPC7593 to be used with 3.3V only logic.
Ordering Information
CPC7593 part numbers are specified as shown here:
B - 28-pin SOIC delivered 29/Tube, 1000/Reel Z - 20-pin SOIC delivered 40/Tube, 1000/Reel
CPC7593 x x xx
TR - Add for Tape & Reel Version
A - With Protection SCR B - Without Protection SCR C - With Protection SCR and with Extra Logic State
Pb e3
Figure 1. CPC7593 Block Diagram
T (T )TESTin
CHANTEST
Tip Ring
T (T )TESTout
DROPTEST
T 7LINE
Secondary Protection
RLINE 22
10 8 TRINGING
SW7
X X SW5 X SW3
X
SW1
5
X SW9
SW2
X
X SW6 XSW4
X SW10
X
SW8
CPC7593
SCR Trip Circuit
+5 Vdc 12 VDD
6 TBAT
SLIC
23 RBAT
17
VREF
Switch Control
L A T
16 15
Logic
C H
18
INTESTin INRINGING INTESTout
LATCH
R (R )TESTout
DROPTEST
R (R )TESTin CHANTEST
19
20 RRINGING
24
300Ω (min.)
1 FGND
28 VBAT
14 13 DGND
TSD
VBAT
RINGING
NOTE 1: Pin assignments are for the 28 pin package.
NOTE 2: Block diagram shown with the optional protection SCR.
DS-CPC7593-R05
www.ixysic.com
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INTEGRATED CIRCUITS DIVISION
CPC7593
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.5 General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.6 Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6.1 Break Switches, SW1 and SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.6.2 Ringing Return Switch, SW3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.6.3 Ringing Switch, SW4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.6.4 TESTout Switches, SW5 and SW6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.6.5 Ringing Test Return Switch, SW7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..