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CPC7508BTR

P1-P3P4-P6P7-P9P10-P12P13-P14
DS-CPC7508 - R04 www.clare.com 1
CPC7508
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
• Clean, bounce-free switching
• Tertiary protection consisting of integrated current
limiting and thermal shutdown for SLIC protection
• +12.5V operation with power consumption ≤25mW
• Latched logic level inputs, no external drive circuitry
required
• Small 16-pin SOIC
Applications
• Fiber to the Home (FTTH)
• Fiber in the Loop (FITL)
• VoIP Gateways
• PBX Systems
• Digitally Added Main Line (DAML)
• Hybrid Fiber Coax (HFC)
Description
The CPC7508 is a member of Clare’s next generation
Line Card Access Switch family. When used with
ringing SLICs it provides the necessary functions to
replace the two 2-Form-C electromechanical test
relays used in contemporary Fiber To The Home
(FTTH) and Optical Network Unit (ONU) deployments
as well as Voice over IP (VoIP) telephony terminals.
Solid state switches provide the mechanism for tip and
ring line break, drop test, and channel test while
requiring only a single +12V supply for operation.
Interface compatibility with 3.3V or 5V logic for switch
state control is provided by the TTL logic level inputs.
The CPC7508 is designed for fiber access units where
EMR’s are used for test access and line monitoring
functions but solid-state switches are desired due to
reduced operating noise, lower power consumption
and longer lifetimes.
This monolithic 8-pole solid-state switch is available in
a 16-pin SOIC package.
Ordering Information
Figure 1. CPC7508 Block Diagram
Part Number Description
CPC7508B 8-pole LCAS, 16-pin SOIC in tubes (50/tube)
CPC7508BTR 8-pole LCAS, 16-pin SOIC in reels (1000/reel)
CPC7508
T
LINE
R
LINE
T
BAT
V
DD
R
BAT
GND
IN
A
IN
B
T
SD
LATCH
6
11
5
1
32
12
16
15
13
L
A
T
C
H
Switch
Control
Logic
+12V
DC
Ringing
SLIC
8
X
SW5
T(T )
TEST_IN CHAN_TEST
9
X
SW6
R(R )
TEST_IN CHAN_TEST
7
X
T(T)
TEST_OUT DROP_TEST
SW3
X
X
SW2
SW1
Secondary
Protection
Tip
Ring
10
X
SW4
R(R)
TEST_OUT DROP_TEST
X
X
SW7
SW8
IN
C
14
RoHS
2002/95/EC
e
3
Pb
CPC7508
2 www.clare.com R04
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.6 Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6.1 Break Switches, SW1 and SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6.2 TEST_OUT Switches SW3 & SW4 and TEST BRIDGE Switches SW7 & SW8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6.3 TEST_IN Switches, SW5 and SW6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7 Digital I/O Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.8 Voltage and Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.9 Protection Circuitry Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.10 Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.2 Logic States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Switch Logic and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2 Under Voltage Detection and Switch Lock Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2.1 Power Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2.2 Hot Plug and Power Up Circuit Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2.3 Power Loss Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.3 Data Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 T
SD
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6 Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6.1 Current Limiting function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6.2 Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7 External Protection Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Printed-Circuit Board Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3 Tape and Reel Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.1 Moisture Reflow Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.2 Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.5 Washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CPC7508
R04 www.clare.com 3
1. Specifications
1.1 Package Pinout 1.2 Pin Description
1.3 Absolute Maximum Ratings
Absolute maximum electrical ratings are at 25°C.
Absolute Maximum Ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at conditions
beyond those indicated in the operational sections of this
data sheet is not implied.
1.4 ESD Rating
1.5 General Conditions
Unless otherwise specified, minimum and maximum
values are guaranteed by production testing
requirements.
Typical values are characteristic of the device at 25° C
and are the result of engineering evaluations. They are
provided for information purposes only and are not
part of the testing requirements.
Specifications cover the operating temperature range
T
A
= -40° C to +85° C. Also, unless otherwise specified
all testing is performed with V
DD
= 12.5 V
dc
, logic low
input voltage is 0 V
dc
and logic high voltage is 3.3 V
dc
.
CPC7508
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
GND
V
DD
T
SD
N/C
T
BAT
T
LINE
T
TEST_OUT
T
TEST_IN
IN
A
IN
B
IN
C
LATCH
R
BAT
R
LINE
R
TEST_OUT
R
TEST_IN
Pin Name Description
1
V
DD
+12.5V
DC
supply
2 GND Ground
3
T
SD
I/O, All Off control, Thermal shutdown flag
4 N/C No Connect - Do not use
5
T
BAT
Tip lead to the SLIC
6
T
LINE
Tip lead of the line side
7
T
TEST_OUT
Tip lead of the Test Out (Drop Test) bus
8
T
TEST_IN
Tip lead of the Test In (Channel Test) bus
9
R
TEST_IN
Ring lead of the Test In (Channel Test) bus
10
R
TEST_OUT
Ring lead of the Test Out (Drop Test) bus
11
R
LINE
Ring lead of the line side
12
R
BAT
Ring lead to the SLIC
13 LATCH Input, Data latch enable
14
IN
C
Input, Logic control
15
IN
B
Input, Logic control
16
IN
A
Input, Logic control
Parameter Minimum Maximum Unit
+12 V power supply (V
DD
)
-0.3 15 V
Logic input voltage -0.3 6 V
Logic input to switch output
isolation
-225V
Switch open-contact to
ground isolation
-225V
Switch open, contact to
contact isolation
-320V
Operating relative humidity 5 95 %
Operating temperature -40 +110 °C
Storage temperature -40 +150 °C
ESD Rating (Human Body Model)
1000 V
P1-P3P4-P6P7-P9P10-P12P13-P14

CPC7508BTR

Mfr. #:
Buy CPC7508BTR
Manufacturer:
IXYS Integrated Circuits
Description:
Switch ICs - Various Line Card Access Switch
Lifecycle:
New from this manufacturer.
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