CPC7581
Line Card Access Switch
Features
•
Small 16 pin surface mount SOIC package
•
Monolithic IC reliability
•
Low matched RDS
ON
•
Eliminates the need for zero cross switching
•
Flexible switch timing to transition from ringing mode
to idle/talk mode
•
Clean, bounce free switching
•
Tertiary Protection consisting of integrated current
limiting, thermal shutdown and SLIC protection
•
5V operation with power consumption <10mW
•
Intelligent battery monitor
•
Latched logic level inputs, no drive circuitry
•
Pin to pin compatible to the Lucent 7581 family
Applications
•
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 CPC7581 is a monolithic solid state switch in a 16 pin
surface mount SOIC package. It provides the necessary
functions to replace a 2-Form-C electromechanical relay
on analog line cards found in Central Office, Access and
PBX equipment. The device contains solid state switches
for tip and ring line break and ring injection/ring return.
The CPC7581 requires only a +5V supply and offers
“break-before-make” or “make-before-break” switch oper-
ation using simple logic level input control. There are two
versions of the CPC7581, the CPC7581BA and the
CPC7581BB. The “BA” version has a protection SCR
which provides protection to the SLIC device and subse-
quent circuitry during fault conditions.
Ordering Information
Part #
CPC7581BA
CPC7581BB
CPC7581BA-TR
CPC7581BB-TR
Description
4 Pole with protection SCR
4 Pole without protection SCR
Tape & Reel Version
Tape & Reel Version
Block Diagram
T
RING
(6)
V
BAT
Reference (16)
TIP
R1
T
LINE
(3)
SW3
Ringing
Return
SW1
Break
T
BAT
(2)
Secondary
Protection
SCR
and Trip
Circuit
SLIC
R
BAT
(15)
Ring
R2
R
LINE
(14)
SW4
Ringing
Access
SW2
Break
CPC7581BA
Ring Generator
R
RING
(12)
-
+
Battery
DS-CPC7581-R2
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CLARE [ CLARE, INC. ]
