CPC7593
Line Card Access Switch
Features
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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/μs
Small 20-pin or 28-pin SOIC or 28-pin DFN package
DFN version provides 65% PCB area reduction over
4
th
generation EMRs
Monolithic IC reliability
Low, matched, R
ON
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
5 V operation with power consumption < 10.5 mW
Intelligent battery monitor
Logic-level inputs, no external drive circuitry required
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 Clare’s next generation
Line Card Access Switch (LCAS) family. This
monolithic 10-pole line card access switch is available
in a 20 or 28 pin SOIC or a 28 pin DFN package. 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
M - 28-pin DFN delivered 33/Tube, 1000/Reel
Z - 20-pin SOIC delivered 40/Tube, 1000/Reel
Applications
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
D -
Without
Protection SCR and
with
Extra Logic State
Figure 1.
CPC7593 Block Diagram
T
TESTin
(T
CHANTEST
)
T
TESTout
(T
DROPTEST
)
10
8 T
RINGING
SW7
5
Pb
+5 Vdc
12 V
DD
RoHS
2002/95/EC
e
3
X
Tip
Secondary
Protection
CPC7593
X
SW9
6 T
BAT
T
LINE
7
X
SW5
X
SW3
X
SW1
SLIC
SW2
Ring
R
LINE
22
X
X
SW6
X
SW4
X
SW10
X
SCR
Trip
Circuit
V
REF
Switch
Control
Logic
SW8
R
TESTout
(R
DROPTEST
)
19
20 R
RINGING
300
Ω
(min.)
L
A
T
C
H
23 R
BAT
17
16
15
18
IN
TESTin
IN
RINGING
IN
TESTout
LATCH
24
1
F
GND
28
V
BAT
14 13
D
GND
T
SD
V
BAT
R
TESTin
(R
CHANTEST
)
RINGING
NOTE 1: Pin assignments are for the 28 pin package.
NOTE 2: Block diagram shown with the optional protection SCR.
DS-CPC7593 - R04
www.clare.com
1
CLARE [ CLARE, INC. ]
