Line Card Access Switch
I
NTEGRATED
C
IRCUITS
D
IVISION
Features
•
Enhanced SW8, Ringing Test Switch, Breakdown
Voltage
•
TTL Logic Level Inputs for 3.3V Logic Interfaces
•
Smart Logic for Power Up / Hot Plug State Control
•
Improved Switch dV/dt Immunity of 500 V/s
•
Small 20-Pin or 28-Pin SOIC or 28-Pin, Thermally
Enhanced Dual, Flat, No-Lead (DFN) Package
•
DFN Version Provides 65% PCB Area Reduction
Over 4
th
Generation EMRs
•
Monolithic IC Reliability
•
Low, Matched, R
ON
•
Eliminates the Need for Zero-Cross Switching
•
Flexible Switch Timing for Transition from Ringing
Mode to Talk Mode.
•
Clean, Bounce-Free Switching
•
SLIC Tertiary Protection Via Integrated Current
Limiting, Voltage Clamping and Thermal Shutdown
•
5V Operation with Power Consumption < 10.5mW
•
Intelligent Battery Monitor
CPC7595
Description
The CPC7595 is a member of IXYS Integrated
Circuits Division’s next 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 or a 28-pin DFN 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 CPC7595
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 CPC7595 to
be used with 3.3V-only logic.
Ordering Information
CPC7595 part numbers are specified as shown here:
B - 28-pin SOIC delivered 29/Tube, 1000/Reel
M - 28-pin DFN delivered 33/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
CPC7595 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”
+5
Vdc
12
V
DD
X
Tip
Secondary
Protection
CPC7595
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-CPC7595-R03
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1
I
NTEGRATED
C
IRCUITS
D
IVISION
CPC7595
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.10 Truth Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.10.1 Truth Table for CPC7595xA and CPC7595xB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.10.2 Truth Table for CPC7595xC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Under Voltage Switch Lock Out Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 Hot Plug and Power Up Circuit Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Switch Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.2 Switch Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.3 Make-Before-Break Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.4 Break-Before-Make Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.5 Alternate 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/SCR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.2 Current Limiting function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1 CPC7595Zx 20-Pin SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2 CPC7595Bx 28-Pin SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.3 CPC7595Mx 28-Pin DFN Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Tape and Reel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.1 CPC7595ZxTR Tape & Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.2 CPC7595BxTR Tape & Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.3 CPC7595MxTR Tape & Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
15
15
15
16
16
16
16
16
17
18
19
19
19
20
20
20
20
20
21
21
22
22
22
22
22
23
23
23
24
24
24
25
25
2
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R03
I
NTEGRATED
C
IRCUITS
D
IVISION
1. Specifications
1.1 Package Pinout
1.2 Pinout
CPC7595
CPC7595B &
CPC7595M
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
20 Pin
1
28 Pin
1
2
3
4
Name
F
GND
NC
NC
NC
T
TESTin
T
BAT
T
LINE
NC
NC
V
DD
T
SD
D
GND
Description
Fault ground
No connection
No connection
No connection
Tip lead of the TESTin bus
Tip lead of the SLIC
Tip lead of the line side
Not connected
No connection
+5 V supply
Temperature shutdown pin
Digital ground
2
3
4
5
6
7
8
9
10
11
12
13
14
15
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
T
RINGING
Ringing generator return
T
TESTout
Tip lead of the TESTout bus
IN
TESTout
Logic control input
IN
RINGING
Logic control input
IN
TESTin
Logic control input
LATCH
Data latch enable control input
R
TESTout
Ring lead of the TESTout bus
R
RINGING
Ringing generator source
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
CPC7595Z
F
GND
1
T
TESTin
2
T
BAT
3
T
LINE
4
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
16
17
18
19
T
RINGING
5
T
TESTout
6
NC 7
V
DD
8
T
SD
9
D
GND
10
20
28
R03
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I
NTEGRATED
C
IRCUITS
D
IVISION
1.3 Absolute Maximum Ratings
Parameter
+5 V 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)
1000 V
CPC7595
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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R03
I
NTEGRATED
C
IRCUITS
D
IVISION
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) = -320 V to gnd
V
SW
(differential) = +260 V to -60 V
+85° C,
V
SW
(differential) = -330 V to gnd
V
SW
(differential) = +270 V to -60 V
-40° C,
V
SW
(differential) = -310 V to gnd
V
SW
(differential) = +250 V to -60 V
I
SW
(on) = ±10 mA, ±40 mA,
R
BAT
and T
BAT
= -2 V
On Resistance
+25° C
+85° C
-40° C
On Resistance
Matching
Per SW1 & SW2 On Resistance test
conditions.
V
SW
(on) = ±10 V
DC current limit
+25° C
+85° C
-40° C
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.
Logic inputs = GND
Logic input to switch
output isolation
+25° C, V
SW
(T
LINE
, R
LINE
) = ±320 V
+85° C, V
SW
(T
LINE
, R
LINE
) = ±330 V
-40° C, V
SW
(T
LINE
, R
LINE
) = ±310 V
dV/dt sensitivity
100V
PP
Square Wave, 100Hz
(Not production tested - limits are
guaranteed by design and quality
control sampling audits.)
-
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
CPC7595
Unit
Off-State
Leakage Current
0.3
1
A
0.1
mA
A
A
-
500
-
V/s
R03
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