Line Card Access Switch
CPC7695
Features
•
Improved switch dV/dt immunity of 1500 V/μs
•
Drop-In Replacement for CPC7595
•
Replaces CPC7585, and allows removal of
power-up control discrete components
•
Enhanced SW8, Ringing Test Switch, breakdown
voltage
•
TTL logic level inputs for 3.3V logic interfaces
•
Smart logic for power up / hot plug state control
•
Small 20 pin or 28 pin SOIC Package
•
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
Description
The CPC7695 is a member of Clare’s third-generation
Line Card Access Switch (LCAS) family. This
monolithic 10-pole line card access switch is available
in a 20- or 28-pin SOIC 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 CPC7695
requires only a +5 V supply and provides stable start
up conditioning during system power up and for hot
plug insertion. Once active, the inputs respond to
traditional TTL logic levels enabling the CPC7695 to
be used with 3.3V only logic.
Ordering Information
CPC7695 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
Applications
•
•
•
•
•
•
•
•
•
Standard voice linecards
Integrated Voice and Data (IVD) linecards
Central office (CO)
Digital Loop Carrier (DLC)
PBX Systems
Digitally Added Main Line (DAML)
Fiber in the Loop (FITL)
Pair Gain System
Channel Banks
T
TESTin
(T
CHANTEST
)
T
TESTout
(T
DROPTEST
)
10
8
T
RINGING
SW7
5
CPC7695 x x xx
TR - Add for Tape & Reel
Version
A -
With
Protection SCR
B -
Without
Protection SCR
C -
With
Protection SCR and “Monitor Test State”
Pb
+5
Vdc
RoHS
2002/95/EC
e
3
12
V
DD
X
Tip
Secondary
Protection
CPC7695
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-CPC7695 - R00D
PRELIMINARY
1
CLARE [ CLARE, INC. ]
