CPC7581_1 Datasheet, PDF (1/17 Pages) Clare, Inc. – Line Card Access Switch

Not for New Designs
CPC7581
Line Card Access Switch
Features
• Small 16-pin SOIC or DFN package
• DFN package printed-circuit board footprint is 60
percent smaller than the SOIC version, 40 percent
smaller than fourth generation EMR solutions.
• Monolithic IC reliability
• Low, matched R_ON
• Eliminates the need for zero-cross switching
• Flexible switch timing for transition from ringing
mode to idle/talk mode.
• Clean, bounce-free switching
• Tertiary protection consisting of integrated current
limiting, thermal shutdown for SLIC protection
• 5 V operation with power consumption < 10 mW
• Intelligent battery monitor
• Latched logic-level inputs, no external drive circuitry
required
• SOIC package pin-compatible with Legerity product
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 four-pole
switch in a 16-pin package. It provides the necessary
functions to replace a 2-Form-C electromechanical
relay on traditional analog and integrated voice and
data (IVD) line cards found in central office, access, and
PBX equipment. The CPC7581 contains solid-state
switches for tip and ring lead line break and ringing
injection/ringing return. The device requires only a +5 V
supply and offers break-before-make and
make-before-break operation using logic-level inputs.
The CPC7581xA versions include an SCR that
provides protection to the SLIC and subsequent
circuitry during a fault condition. The CPC7581xC
versions are functionally identical to the CPC7581xA
versions, but with higher SCR hold current.
Ordering Information
CPC7581 part numbers are specified as shown here:
B - 16-pin SOIC delivered 50/Tube, 1000/Reel
M - 16-pin DFN delivered 52/Tube, 1000/Reel
CPC7581 x x xx
TR - Add for Tape & Reel Version
A - With Protection SCR
B - Without Protection SCR
C - With Protection SCR and higher SCR hold current
Figure 1. CPC7581 Block Diagram
+5 Vdc
Tip
Ring
T 3 _LINE
Secondary
Protection
R_LINE 14
V_BAT
6 ^TRING
SW3
X
X
SW1
CPC7581
7 VDD
2 T_BAT
SW2
X
SW4
X
SCR and
Trip Circuit
(CPC7581xA/C)
12
300Ω
1
F_GND
(min.)
RINGING
V_REF
Switch
Control
Logic
16
V_BAT
9
8
D_GND
15 RBAT
L
A
10
T
C 11
H
Pb
SLIC
IN_RINGING
LATCH
T_SD
RoHS
2002/95/EC
e3
DS-CPC7581-R05
www.clare.com
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