CPC7695
Line Card Access Switch
INTEGRATED
C
IRCUITS
D
IVISION
PRELIMINARY
Features
Description
• Improved switch dV/dt immunity of 1500V/s
• Drop-In Replacement for CPC7595
• Replaces CPC7585, and allows removal of
power-up control discrete components
• Enhanced SW8, Ringing Test Switch, breakdown
voltage
The CPC7695 is a member of IXYS Integrated
Circuits Division’s third-generation Line Card Access
Switch (LCAS) family. This monolithic 10-pole line
card access switch is available in a 20-pin 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
• 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
equipment. The device contains solid state switches
for tip and ring line break, ringing injection, and test
access. The CPC7695 requires only a +5V 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.
• Low, matched, R
ON
• Eliminates the need for zero-cross switching
• Flexible switch timing for transition from Ringing
mode toTalk 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
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)
CPC7695 x x xx
TR - Add for Tape & Reel Version
• Digital Loop Carrier (DLC)
• PBX Systems
• Digitally Added Main Line (DAML)
• Fiber in the Loop (FITL)
• Pair Gain System
A - With Protection SCR
B - Without Protection SCR
C - With Protection SCR and Additional Test State
• Channel Banks
(TCHANTEST
)
TTESTin
+5 VDC
12 VDD
(TDROPTEST
)
TTESTout
TRINGING
10
8
5
SXW7
CPC7695
XSW5
SW3
Tip
X
XSW9
6 TBAT
TLINE
7
X
SW1
Secondary
Protection
SLIC
Ring
SW2
X
SW4
R
23
17
16
15
RLINE
22
BAT
INTESTin
L
A
T
C
H
SW10
SW6
X
X
X
SCR
Trip
Circuit
Switch
Control
Logic
INRINGING
INTESTout
VREF
X
18
LATCH
SW8
19
20
24
1
FGND
14 13
DGND
RRINGING
28
RTESTout (RDROPTEST
)
TSD
300Ω (min.)
VBAT
RINGING
VBAT
NOTE 1: Pin assignments are for the 28-pin package.
R
TESTin (RCHANTEST)
NOTE 2: Block diagram shown with the optional protection SCR.
DS-CPC7695-R00F
PRELIMINARY
1