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

INTEGRATED CIRCUITS DIVISION
CPC7594
Line Card Access Switch
Features
• TTL Logic Level Inputs for 3.3V Logic Interfaces
• Smart Logic for Power Up / Hot Plug State Control
• 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 Power Consumption < 10 mW
• Intelligent Battery Monitor
• Latched Logic-Level Inputs, no External Drive
Circuitry Required
• Small 16-pin SOIC Package
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
Description
The CPC7594 is a member of IXYS Integrated
Circuits Division’s next generation Line Card Access
Switch family. This monolithic 6-pole solid-state switch
is available in a 16-pin SOIC 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.
Ordering Information
Part #
CPC7594BA
CPC7594BATR
Description
16-Pin SOIC, with Protection SCR, 50/Tube
16-Pin SOIC, with Protection SCR, 1000/Reel
Pb
e3
Figure 1. CPC7594 Block Diagram
T (T ) _TEST
CHANTEST
+5V_DC
5 ^TRINGING
1
6 VDD
XSW3
XSW5
Tip
T 4 _LINE
X
SW1
Secondary
Protection
CPC7594
3 T_BAT
SLIC
Ring
R_LINE13
SW2
X
14 R_BAT
XSW4
XSW6
Switch
V_REF
Control
Logic
L
9
A
10
T
C 11
H
IN_TEST
IN_RINGING
LATCH
V_BAT
12 R_RINGING
6
RINGING ^300Ω
2
SCR Trip Circuit
F_GND
15
V_BAT
87
D_GND
T_SD
(min.)
R (R ) _TEST
CHANTEST
DS-CPC7594-R04
www.ixysic.com
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