CPC7594 Datasheet, PDF (1/20 Pages) Clare, Inc. – Line Card Access Switch

CPC7594
Line Card Access Switch
Features
• TTL logic level inputs for 3.3V logic interfaces
• Smart logic for power up / hot plug state control
• Small 16-pin SOIC or 16-pin DFN Package
• DFN package printed-circuit board footprint is 60
percent smaller than the SOIC version, 70 percent
smaller than 4^th generation EMR solutions.
• 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
• 5 V operation with power consumption < 10 mW
• Intelligent battery monitor
• Latched logic-level inputs, no external drive circuitry
required
Applications
• 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. CPC7594 Block Diagram
T (T ) _TEST
CHANTEST
5 ^TRINGING
1
Tip
Ring
T 4 _LINE
Secondary
Protection
R_LINE13
XSW3
X
SW1
SW2
X
XSW4
XSW5
XSW6
CPC7594
V_BAT
12 R_RINGING
6
RINGING ^300Ω
(min.)
R (R ) _TEST
CHANTEST
2
SCR Trip Circuit
F_{GND (CPC7594xA/C)}
Description
The CPC7594 is a member of Clare’s next generation
Line Card Access Switch family. This monolithic 6-pole
solid-state switch is available in either a 16-pin SOIC
or a 16-pin DFN package. It provides the necessary
functions to replace two 2-Form-C electro-mechanical
relays used on traditional analog and contemporary
integrated voice and data (IVD) line cards found in
Central Office, Access, and PBX equipment. Because
this device contains solid state switches for tip and ring
line break, ringing injection/return and channel test
access, it requires only a +5V supply for operation and
TTL logic-level inputs for control.
The CPC7594 is particularly designed for IVD line
cards where an EMR is required for line test due to the
high frequencies typical of ADSL but solid-state
switches are desired for switching and test-in
functions.
The CPC7594xC logic differs from the CPC7594xA/B
logic by providing a monitor function during the test
state.
Ordering Information
CPC7594 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
CPC7594 x x xx
TR - Add for Tape & Reel Version
A - With Protection SCR
B - Without Protection SCR
C - With Protection SCR and “Monitor Test State”
+5V_DC
6 VDD
3 T_BAT
Switch
V_REF
Control
Logic
15
V_BAT
87
D_GND
SLIC
14 RBAT
L
9
A
10
T
C 11
H
IN_TEST
IN_RINGING
LATCH
T_SD
Pb
RoHS
2002/95/EC
e3
DS-CPC7594 - R03
www.clare.com
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