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Line Card Access Switch
Description
The CPC7583 is a monolithic solid state switch in a 28 pin
surface mount SOIC package. It provides the necessary
functions to replace three 2-Form-C electromechanical re-
lays on analog line cards found in Central Office, Access
and PBX equipment. The device contains solid state
switches for tip and ring line break, ring injection/ring re-
turn, line test access, test in access and ringing generator
testing. The CPC7583 requires only a +5V supply and of-
fers “break-before-make” or “make-before-break” switch
operation using simple logic level input control. The
CPC7583 has 4 versions. The CPC7583BA and the
CPC7583BC contain the integrated protection SCR while
the CPC7583BC and the CPC7583BD contain an extra
logic state which is detailed in later sections.
Features
Small 28 pin surface mount SOIC package
Monolithic IC reliability
Low matched RDS
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 7583 family
Block Diagram
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
CPC7583
Ordering Information
Part #
CPC7583BA
CPC7583BB
CPC7583BC
Description
10 Pole with protection SCR
10 Pole without protection SCR
10 Pole extra logic state with
protection SCR
10 Pole extra logic state without
protection SCR
CPC7583BATR Tape and Reel Version
CPC7583BBTR Tape and Reel Version
CPC7583BCTR Tape and Reel Version
CPC7583BDTR Tape and Reel Version
CPC7583BD
DS-CPC7583-RE
R1
R2
Ring
TIP
Secondary
Protection
SW6
Test Out
SW1 Break
SW10
Test In
SW3
Ringing
Return
SW7
Ringing Test Return
SW8
Ringing Test
SW4
Ringing
Access
T
BAT (6)
R
BAT (23)
Ring Generator
V
BAT
Reference (28)
CPC7583BA
Battery
SLIC
SW9
Test In
SW5
Test Out
Break SW2
SCR and
TRIP Circuit
T
LINE (7)
R
LINE (22)
T
TESTout
(10)
T
RING
(8)
T
TESTin
(5)
R
TESTin (24)
R
RING
(20)
R
TESTout
(19)