Line Card Access Switch
I
NTEGRATED
C
IRCUITS
D
IVISION
Features
•
Improved switch dV/dt immunity of 1500V/s
•
Drop-In Replacement for CPC7595
•
Replaces CPC7585, and allows removal of
power-up control discrete components
•
Enhanced Ringing Test Switch, SW8, breakdown
voltage
•
TTL logic level inputs for 3.3V logic interfaces
•
Smart logic for power-up / hot-plug state control
•
Small 20-pin or 28-pin SOIC Package
•
Monolithic IC reliability
•
Low, matched, R
ON
•
Eliminates the need for zero-cross switching
•
Flexible switch timing for transition from Ringing
mode toTalk mode.
•
Clean, bounce-free switching
•
SLIC tertiary protection via integrated current
limiting, voltage clamping, and thermal shutdown
•
5V operation with power consumption <10.5 mW
•
Intelligent battery monitor
CPC7695
Description
The CPC7695 is a member of IXYS Integrated
Circuits Division’s third-generation Line Card Access
Switch (LCAS) family. This monolithic 10-pole line
card access switch is available in a 20-pin or 28-pin
SOIC package. It provides the necessary functions to
replace three 2-Form-C electromechanical relays on
analog line cards or combined voice and data line
cards found in central office, access, and PBX
equipment. The device contains solid state switches
for tip and ring line break, ringing injection, and test
access. The CPC7695 requires only a +5V supply and
provides stable start-up conditioning during system
power-up and for hot-plug insertion. Once active, the
inputs respond to traditional TTL logic levels, enabling
the CPC7695 to be used with 3.3V-only logic.
Ordering Information
CPC7695 part numbers are specified as shown here:
B - 28-pin SOIC delivered 29/Tube, 1000/Reel
Z - 20-pin SOIC delivered 40/Tube, 1000/Reel
Applications
•
•
•
•
•
•
•
•
•
Standard voice linecards
Integrated Voice and Data (IVD) linecards
Central office (CO)
Digital Loop Carrier (DLC)
PBX Systems
Digitally Added Main Line (DAML)
Fiber in the Loop (FITL)
Pair Gain System
Channel Banks
T
TESTin
(T
CHANTEST
)
T
TESTout
(T
DROPTEST
)
10
8
T
RINGING
SW7
5
CPC7695 x x xx
TR - Add for Tape & Reel
Version
A -
With
Protection SCR
B -
Without
Protection SCR
C -
With
Protection SCR and Additional Test State
+5
V
DC
12
V
DD
X
Tip
Secondary
Protection
CPC7695
X
SW9
6 T
BAT
T
LINE
7
X
SW5
X
SW3
X
SW1
SLIC
SW2
Ring
R
LINE
22
X
X
SW6
X
SW4
X
SW10
X
SCR
Trip
Circuit
V
REF
Switch
Control
Logic
SW8
R
TESTout
(R
DROPTEST
)
19
20 R
RINGING
300
Ω
(min.)
L
A
T
C
H
23 R
BAT
17
16
15
18
IN
TESTin
IN
RINGING
IN
TESTout
LATCH
24
1
F
GND
28
V
BAT
14 13
D
GND
T
SD
V
BAT
R
TESTin
(R
CHANTEST
)
RINGING
NOTE
1: Pin assignments are for the 28-pin package.
NOTE
2: Block diagram shown
with
the optional protection SCR.
DS-CPC7695-R01
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1
I
NTEGRATED
C
IRCUITS
D
IVISION
CPC7695
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6 Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6.1 Break Switches: SW1 and SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6.2 Ringing Return Switch: SW3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6.3 Ringing Switch: SW4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.6.4 TESTout Switches: SW5 and SW6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6.5 Ringing Test Return Switch: SW7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6.6 Ringing Test Switch: SW8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.6.7 TESTin Switches: SW9 and SW10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.7 Digital I/O Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.8 Voltage and Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.9 Protection Circuitry Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.10 Truth Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.10.1 Truth Table for CPC7695xA and CPC7695xB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.10.2 Truth Table for CPC7695xC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Data Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 T
SD
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Under Voltage Switch Lock Out Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2 Hot-Plug and Power-Up Design Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 V
BAT
Pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.1 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.2 Battery Voltage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Ringing To Talk State Switch Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7.1 Make-Before-Break Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7.2 Break-Before-Make Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7.3 Alternate Break-Before-Make Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.8 Ringing Switch Zero-Cross Current Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10.1 Current Limiting Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10.2 Diode Bridge/SCR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10.3 Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.11 External Protection Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Moisture Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 ESD Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Board Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Mechanical Dimensions and PCB Land Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Tape and Reel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
16
16
16
17
17
17
17
18
18
18
18
18
19
20
20
20
21
21
21
21
22
23
23
23
23
23
24
25
2
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R01
I
NTEGRATED
C
IRCUITS
D
IVISION
1. Specifications
1.1 Package Pinout
CPC7695B
F
GND
1
NC
2
NC
3
NC
4
T
TESTin
5
T
BAT
6
T
LINE
7
T
RINGING
8
NC
9
T
TESTout
10
NC
11
V
DD
12
T
SD
13
D
GND
14
28
V
BAT
27
NC
26
NC
25
NC
24 R
TESTin
23 R
BAT
22 R
LINE
21
NC
20 R
RINGING
19 R
TESTout
18 LATCH
17 IN
TESTin
16 IN
RINGING
15 IN
TESTout
CPC7695
1.2 Pinout
20 28
Pin Pin
1
1
2
3
4
2
3
4
5
6
7
8
9
5
6
7
8
9
10
11
12
13
Name
F
GND
NC
NC
NC
T
TESTin
T
BAT
T
LINE
NC
NC
V
DD
T
SD
D
GND
Fault ground
No connection
No connection
No connection
Description
Tip lead of the TESTin bus
Tip lead of the SLIC
Tip lead of the line side
Not connected
No connection
+5V supply
Temperature shutdown pin
Digital ground
T
RINGING
Ringing generator return
T
TESTout
Tip lead of the TESTout bus
10 14
11 15 IN
TESTout
Logic control input
12 16 IN
RINGING
Logic control input
13 17
14 18
15 19
20
V
BAT
19 R
TESTin
18 R
BAT
17 R
LINE
16 R
RINGING
15 R
TESTout
14 LATCH
13 IN
TESTin
12 IN
RINGING
11 IN
TESTout
IN
TESTin
Logic control input
LATCH
Data latch enable control input
R
TESTout
Ring lead of the TESTout bus
NC
R
LINE
R
BAT
R
TESTin
NC
NC
NC
V
BAT
No connection
Ring lead of the line side
Ring lead of the SLIC
Ring lead of the TESTin bus
No connection
No connection
No connection
Battery supply
CPC7695Z
F
GND
1
T
TESTin
2
T
BAT
3
T
LINE
4
16 20 R
RINGING
Ringing generator source
21
17 22
18 23
19 24
25
26
27
20 28
T
RINGING
5
T
TESTout
6
NC
7
V
DD
8
T
SD
9
D
GND
10
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NTEGRATED
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D
IVISION
1.3 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, SW7, SW8,
SW9, SW10)
Switch open-contact
isolation (SW4)
Operating relative humidity
Operating temperature
Storage temperature
Minimum Maximum
-0.3
-
-5
-0.3
-
7
-85
+5
V
DD
+0.3
320
Unit
V
V
V
V
V
1.4 ESD Rating
ESD Rating (Human Body Model)
1000V
CPC7695
1.5 General Conditions
Unless otherwise specified, minimum and maximum
values are production testing requirements.
Typical values are characteristic of the device at 25°C,
and are the result of engineering evaluations. They are
provided for informational purposes only, and are not
part of the manufacturing 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 input voltage is
+5V
DC
.
-
320
V
-
5
-40
-40
465
95
+110
+150
V
%
°C
°C
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
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1.6 Switch Specifications
1.6.1 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
Per SW1 & SW2 On-Resistance test
conditions.
V
SW
(on) = ±10V
DC current limit
+25°C
+85°C
-40°C
Dynamic current limit
(t
0.5 s)
Break switches on, all other switches
off. Apply ±1kV 10x1000s pulse with
appropriate protection in place.
Logic inputs = GND
Logic input to switch
output isolation
+25°C, V
SW
(T
LINE
, R
LINE
) = ±320V
+85°C, V
SW
(T
LINE
, R
LINE
) = ±330V
-40°C, V
SW
(T
LINE
, R
LINE
) = ±310V
Transient Immunity
100V
PP
Square Wave, 100Hz
(Not production tested - limits are
guaranteed by design and quality
control sampling audits.)
dV/dt
I
SW
-
-
-
0.1
0.3
0.1
1
I
SW
I
SW
-
80
-
-
225
150
400
2.5
-
425
-
R
ON
-
R
ON
-
14.5
20.5
10.5
0.15
-
28
-
0.55
I
SW
-
0.1
Symbol
Minimum
Typical
Maximum
CPC7695
Unit
Off-State
Leakage Current
0.3
1
A
0.1
mA
A
A
1500
2100
-
V/s
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