CPC75282
I
NTEGRATED
C
IRCUITS
D
IVISION
Features
•
•
•
•
•
•
•
•
•
Improved Switch dV/dt Immunity of 1500V/ s
Smart logic for power-up/hot-plug state control
Small 44-pin TQFP Package
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 very low power consumption
Intelligent battery monitor
Latched logic-level inputs, no external drive circuitry
required
Line Card Access Switch
PRELIMINARY
Description
The CPC75282 Dual Line Card Access Switch
(LCAS), a member of IXYS Integrated Circuits
Division’s next generation Line Card Access Switch
family, is a monolithic solid state device that provides
the switching functionality of four 2-Form-C relays in a
single, small, economical package.
The CPC75282 Dual LCAS device is designed to
provide ringing and test access to the telephone loop
in Central Office, Digitally Added Main Line, Private
Branch Exchange, Digital Loop Carrier, and Hybrid
Fiber Coax/Fiber-In-The-Loop analog line card
applications. Test access switches provide access to
the telephone loop for line (drop) test or message
waiting in the PBX application.
•
•
•
Ordering Information
Part #
CPC75282KA
CPC75282KATR
Description
44-Pin TQFP, (37/Tube)
44-Pin TQFP, Tape & Reel (1000/Reel)
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
Pb
V
DD
9,25
e
3
Figure 1. CPC75282 Block Diagram
T
TEST1
T
RINGING1
37
38
SW3
1/2 - CPC75282
(Channel 1)
X
X
SW5
X
SW1
SW2
Battery
Monitor
22
R
BAT1
P1
P2
P3
LATCH
1
LATCH
2
TSD
1
TSD
2
OFF
1
T
LINE1
36
21
T
BAT1
R
LINE1
34
SW4
X
X
X
SW6
CH1
L
A
T
C
H
14
15
16
17
18
28
6
19
20
R
RINGING1
R
TEST1
30
33
CH2
Switch
Control
Logic
OFF
2
27
F
GND1
8,26
V
BAT
24
CFG
11,23
D
GND
DS-CPC75282-R00E
PRELIMINARY
1
I
NTEGRATED
C
IRCUITS
D
IVISION
CPC75282
PRELIMINARY
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pinout by Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Pinout by Pin Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6 General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.7 Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.7.1 Break Switches, SW1 and SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.7.2 Ringing Return Switch, SW3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7.3 Ringing Switch, SW4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.7.4 Test Switches, SW5 and SW6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.8 Digital I/O Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.9 Voltage and Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.10 Protection Circuitry Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.11 Truth Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.11.1 Operating States: CFG=0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.11.2 Operating States: CFG=1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Under Voltage Switch Lock-Out Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Switch Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.2 Switch Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.3 Make-Before-Break Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.4 Make-Before-Break Operation Logic Table (Ringing to Talk Transition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.5 Break-Before-Make Ringing to Talk Transition Logic Sequence CPC7592xA/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.6 Break -Before- Make Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Data Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 T
SD
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Ringing Switch Zero-Cross Current Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.8 Battery Voltage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.1 Diode Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.2 Current Limiting function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 Thermal Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.11 External Protection Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Figure 1: Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Figure 2: Switches 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Figure 3: Switch 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Figure 4: Switches 5-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Moisture Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 ESD Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Board Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5.1 CPC75282KA Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5.2 CPC75282KATR Tape & Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
12
12
13
13
13
13
13
14
14
14
14
15
15
15
15
15
15
16
16
17
17
17
17
17
18
18
18
18
18
19
19
19
2
PRELIMINARY
R00E
I
NTEGRATED
C
IRCUITS
D
IVISION
1. Specifications
1.1 Package Pinout
R
LINE2
NC
T
LINE2
T
TEST2
T
RINGING2
NC
T
RINGING1
T
TEST1
T
LINE1
NC
R
LINE1
CPC75282
PRELIMINARY
1.3 Pinout by Pin Number
Pin
1
4
6
7
R
TEST1
NC
NC
R
RINGING1
NC
TSD
1
F
GND1
V
BAT
V
DD
CFG
D
GND
Name
R
TEST2
Description
Ring Lead of the Test Bus
Pin 1
R
RINGING2
Ringing Generator Source
TSD
2
Temperature Shutdown Pin
F
GND2
V
DD
R
BAT2
T
BAT2
P1
P2
P3
LATCH
1
LATCH
2
OFF
1
OFF
2
T
BAT1
R
BAT1
CFG
V
DD
F
GND1
TSD
1
Fault Ground
+5V Supply
Ring Lead to the SLIC
Tip Lead to the SLIC
Logic Control Input
Logic Control Input
Logic Control Input
Data Latch Enable Control Input
Data Latch Enable Control Input
All Off Logic Level Input Switch Control
All Off Logic Level Input Switch Control
Tip Lead to the SLIC
Ring Lead to the SLIC
Operating States Configuration
+5V Supply
Fault Ground
Temperature Shutdown Pin
R
TEST2
NC
NC
R
RINGING2
NC
TSD
2
F
GND2
V
BAT
V
DD
NC
D
GND
9
12
13
14
15
16
17
18
19
20
21
22
24
25
1.2 Pinout by Channel
CH1
27
21
36
38
37
9, 25
33
30
34
22
8, 26
17
28
19
18
6
20
1
4
44
12
CH2
7
13
42
40
41
Name
F
GNDx
T
BATx
T
LINEx
T
RINGINGx
T
TESTx
V
DD
R
TESTx
R
RINGINGx
R
LINEx
R
BATx
V
BAT
LATCH
x
TSD
x
OFF
x
D
GND
P1
P2
P3
CFG
NC
R
BAT2
T
BAT2
P1
P2
P3
LATCH
1
LATCH
2
OFF
1
OFF
2
T
BAT1
R
BAT1
Description
Fault Ground
Tip Lead to the SLIC
Tip Lead of the Line Side
Ringing Generator Return
Tip Lead of the Test Bus
+5V Supply
Ring Lead of the Test Bus
Ringing Generator Source
Ring Lead of the Line Side
Ring Lead to the SLIC
Battery Supply
Data Latch Enable Control Input
Temperature Shutdown Pin
All Off Logic Level Input Switch Control
2
Digital Ground
Logic Control Input
Logic Control Input
Logic Control Input
Operating States Configuration
Not Connected
1
27
28
30
32
33
34
35
36
37
38
39
40
41
42
43
44
9, 25
11, 23
8, 26
2, 3, 5,
10, 29,
31, 32,
35, 39, 43
R
RINGING1
Ringing Generator Source
NC
Not Connected
R
TEST1
Ring Lead of the Test Bus
R
LINE1
Ring Lead of the Line Side
NC
T
LINE1
T
TEST1
Not Connected
Tip Lead of the Line Side
Tip Lead of the Test Bus
T
RINGING1
Ringing Generator Return
NC
Not Connected
T
RINGING2
Ringing Generator Return
T
TEST2
Tip Lead of the Test Bus
T
LINE2
NC
R
LINE2
V
DD
D
GND
V
BAT
NC
Tip Lead of the Line Side
Not Connected
Ring Lead of the Line Side
+5V Supply
Digital Ground
Battery Supply
Not Connected
11, 23
14
15
16
24
2, 3, 5, 10, 29,
31, 32, 35, 39,
43
1
2
“x” denotes channel number
An internal pull-down device is included on this node to set
Off as the power-up default state. These pins can also be
used as a device reset. If these pins are not used, tie to V
DD
R00E
PRELIMINARY
3
I
NTEGRATED
C
IRCUITS
D
IVISION
1.4 Absolute Maximum Ratings
Parameter
+5V power supply (V
DD
)
Battery Supply
D
GND
to F
GND
Separation
Logic input voltage
Logic input to switch output
isolation
Switch open-contact
isolation (SW1, SW2, SW3,
SW5, SW6)
Switch open-contact
Isolation (SW4)
Operating relative humidity
Operating temperature
Storage temperature
Minimum Maximum
-0.3
-
-5
-0.3
-
-
-
5
-40
-40
7
-85
+5
V
DD
+ 0.3
320
320
465
95
+110
+150
CPC75282
PRELIMINARY
1.5 ESD Rating
Unit
V
V
V
V
V
V
V
%
C
C
ESD Rating (Human Body Model)
1000V
1.6 General Conditions
Unless otherwise specified, minimum and maximum
values are production testing requirements. Typical
values are characteristic of the device 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
= 5V
DC
, logic low
input voltage is 0V
DC
and logic high voltage is 5V
DC
.
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.
4
PRELIMINARY
R00E
I
NTEGRATED
C
IRCUITS
D
IVISION
1.7 Switch Specifications
1.7.1 Break Switches, SW1 and SW2
Parameter
Test Conditions
V
SW1
(differential) = T
LINE
to T
BAT
V
SW2
(differential) = R
LINE
to R
BAT
All-Off state.
+25 C,
V
SW
(differential) = -320V to gnd
V
SW
(differential) = +260V to -60V
+85 C,
V
SW
(differential) = -330V to gnd
V
SW
(differential) = +270V to -60V
-40 C,
V
SW
(differential) = -310V to gnd
V
SW
(differential) = +250V to -60V
I
SW
(on) = ±10mA, ±40mA,
R
BAT
and T
BAT
= -2V
On Resistance
+25 C
+85 C
-40 C
On Resistance
Matching
ON-State Voltage
1
CPC75282
PRELIMINARY
Symbol
Minimum
Typical
Maximum
Unit
Off-State
Leakage Current
I
SW
-
-
1
A
14.5
R
ON
R
ON
V
ON
-
-
10.5
-
-
60
V
1
+ 0.5
-
I
SW
I
SW
80
-
1
-
-
2.5
0.02
-
-
-
300
-
31
-
1.0
320
-
-
V
Per SW1 & SW2 On Resistance test
conditions.
Maximum Differential Voltage (V
max
)
Foldback Voltage Breakpoint 1 (V
1
)
Foldback Voltage Breakpoint 2 (V
2
)
V
SW
(on) = ±10V, +25 C
DC current limit 1 (I
LIM1
) V
SW
(on) = ±10V, +85 C
V
SW
(on) = ±10V, -40 C
DC current limit 2 (I
LIM
2)
Dynamic current limit
(t = <0.5 s)
Break switches on, all other switches
off. Apply ±1 kV 10x1000 s pulse with
appropriate protection in place.
+25 C, OFF
x
= 0,
V
SW
(T
LINE
, R
LINE
) = ±320V
Logic Input to Switch
Output Isolation
+85 C, OFF
x
= 0,
V
SW
(T
LINE
, R
LINE
) = ±330V
-40 C, OFF
x
= 0,
V
SW
(T
LINE
, R
LINE
) = ±310V
Transient Immunity
2
2
425
-
-
mA
I
SW
A
-
I
SW
-
-
dV/dt
1500
-
-
-
2100
-
V/ s
1
A
1
Choice of secondary protector should ensure this rating is not exceeded.
Applied voltage is 100V
P-P
square wave at 100Hz.
PRELIMINARY
5
R00E
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