CPC7695 Datasheet, PDF (1/23 Pages) Clare, Inc. – Line Card Access Switch

CPC7695
Line Card Access Switch
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
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
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
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
RoHS
2002/95/EC
e3
T (T ) _TESTin
CHANTEST
Tip
Ring
T (T ) _TESTout
DROPTEST
T 7 _LINE
Secondary
Protection
R_LINE 22
10
8 TRINGING
SW7
X
X ^SW5 X ^SW3
X
SW1
5
X SW9
SW2
X
X SW6 XSW4
X SW10
X
SW8
CPC7695
SCR
Trip
Circuit
+5 Vdc
12 V_DD
6 T_BAT
SLIC
23 R_BAT
17
V_REF
Switch
Control
L
A
T
16
15
Logic
C
H
18
IN_TESTin
IN_RINGING
IN_TESTout
LATCH
R (R ) _TESTout
DROPTEST
R (R ) _TESTin
CHANTEST
19
20 R_RINGING
24
1
28 14 13
300Ω (min.)
F_GND
D_GND
T_SD
V_BAT
V_BAT
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