CPC75282
Line Card Access Switch
Features
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Improved Switch dV/dt Immunity of 1500V/μs
Smart logic for power-up/hot-plug state control
Small 44-pin TQFP Package
Monolithic IC reliability
Low, matched R
ON
Eliminates the need for zero-cross switching
Flexible switch timing to transition from ringing mode
to talk mode.
Clean, bounce-free switching
Tertiary protection consisting of integrated current
limiting, voltage clamping, and thermal shutdown for
SLIC protection
5V operation with very low power consumption
Intelligent battery monitor
Latched logic-level inputs, no external drive circuitry
required
Description
The CPC75282 Dual Line Card Access Switch
(LCAS), a member of Clare’s next generation Line
Card Access Switch family, is a monolithic solid state
device that provides the switching functionality of four
2-Form-C relays in a single, small, economical
package.
The CPC75282 Dual LCAS device is designed to
provide ringing and test access to the telephone loop
in Central Office, Digitally Added Main Line, Private
Branch Exchange, Digital Loop Carrier, and Hybrid
Fiber Coax/Fiber-In-The-Loop analog line card
applications. Test access switches provide access to
the telephone loop for line (drop) test or message
waiting in the PBX application.
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Ordering Information
Part #
CPC75282KATR
Description
44-Pin TQFP, Tape & Reel (1000/Reel)
Applications
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VoIP Gateways
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
Figure 1. CPC75282 Block Diagram
V
DD
9,25
T
TEST1
T
RINGING1
37
38
SW3
T
LINE1
36
1/2 - CPC75282
(Channel 1)
X
X
SW5
X
SW1
SW2
Battery
Monitor
22
R
BAT1
P1
P2
P3
LATCH
1
LATCH
2
TSD
1
TSD
2
OFF
1
OFF
2
21
T
BAT1
R
LINE1
34
SW4
X
X
X
SW6
CH1
L
A
T
C
H
14
15
16
17
18
28
6
19
20
R
RINGING1
R
TEST1
30
33
CH2
Switch
Control
Logic
27
F
GND1
8,26
V
BAT
24
CFG
11,23
D
GND
Pb
RoHS
2002/95/EC
e
3
1
DS-CPC75282 - R00D
www.clare.com
CLARE [ CLARE, INC. ]
