CPC7584
Line Card Access Switch
Features
•
Small 16-pin SOIC or micro-leadframe package
•
Micro-leadframe package (MLP) printed circuit board
footprint is 70% smaller than 4
TH
generation EMRs
and 60% smaller than SOIC version
•
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
Description
The CPC7584 is a monolithic solid state switch in a
16-pin SOIC or MLP surface mount package. It
provides the necessary functions to replace two
2-Form-C electro-mechanical relays on traditional
analog and integrated voice and data (IVD) line cards
found in Central Office, Access, and PBX equipment.
The device contains solid state switches for tip and
ring line break, ringing injection/ringing return and
channel test access. The CPC7584 requires only a
+5V supply and offers “break-before-make” or
“make-before-break” switch operation using simple
logic-level input control.
The CPC7584xC logic differs from the CPC7584xA/B
with an enhancement permitting channel monitoring in
the test state. See “Functional Description” on page 9
for more information. The CPC7584xC also has a
higher trigger and hold current for the protection SCR.
Specify CPC7584Bx for SOIC or specify CPC7582Mx
for MLP devices shipped in tubes. Append the part
number with the suffix TR for tape and reel packaging.
Applications
•
•
•
•
•
•
•
•
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
el
8 T
RINGING
1
Figure 1. CPC7584 Block Diagram
T
TEST
(T
CHANTEST
)
Pr
Tip
Secondary
Protection
T
LINE
4
X
SW3
X
SW1
im
in
ar
y
Ordering Information
Part Number
CPC7584xA
CPC7584xB
CPC7584xC
Description
+5 Vdc
6 V
DD
With protection SCR
Without protection SCR
With protection SCR and “Monitor” test state
CPC7584
X
SW5
3 T
BAT
SLIC
R
LINE
13
SW2
Ring
X
X
SW4
X
SW6
SCR
and
Trip
Circuit
2 F
GND
V
REF
Switch
Control
Logic
L
A
T
C
H
7
14 R
BAT
9
10
11
IN
TEST
IN
RINGING
LATCH
V
BAT
RINGING
12 R
RINGING
300
Ω
(min.)
16
15
V
BAT
8
D
GND
T
SD
R
TEST
(R
CHANTEST
)
DS-CPC7584 - R0B
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1
CPC7584
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Absolute Maximum Ratings (at 25° C). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Electrical Characteristics, TA = -40° C to +85° C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.1 Power Supply Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.2 Break Switches, SW1 and SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3 Ringing Return Switch, SW3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4 Ringing Switch, SW4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.5 Test Switches, SW5 and SW6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Digital Input Characteristics - IN
TEST
,IN
RINGING
and LATCH Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Power Consumption Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 Thermal Shutdown Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 Protection Circuitry Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9 Truth Table - CPC7584xA/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.10 Truth Table - CPC7584xC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Switch Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 Make-Before-Break Operation (Ringing to Talk Transition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 Break-Before-Make Operation (Ringing to Talk Transition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3 Alternate Break-Before-Make Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Ring Access Switch Zero-Cross Current Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Battery Voltage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.1 Diode Bridge/SCR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.2 Current Limiting function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Temperature Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.8 External Protection Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 Data Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.2 MLP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Printed-Circuit Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2 MLP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Tape and Reel Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1 Moisture Reflow Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2 Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
3
4
4
4
4
5
6
6
7
7
8
8
9
9
im
in
ar
y
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Pr
el
10
10
10
11
11
11
12
12
12
12
12
12
12
13
13
14
14
14
14
15
15
15
15
15
15
15
16
16
2
R0B
CPC7584
1. Specifications
1.1 Package Pinout
1.2 Pinout
Pin
16
R
TEST
CPC7584
T
TEST
1
F
GND
2
T
BAT
3
T
LINE
4
T
RINGING
5
V
DD
6
T
SD
7
D
GND
8
Name
T
TEST
F
GND
T
BAT
T
LINE
V
DD
Description
Connect to Tip lead of test bus
Fault ground
Connect to tip lead of SLIC
Connect to tip lead of the line (drop)
+5 V supply
1
2
3
4
5
6
15 V
BAT
14 R
BAT
13 R
LINE
12 R
RINGING
11 LATCH
10 IN
RINGING
9 IN
TEST
el
Pr
Rev. B
im
in
ar
y
7
T
SD
8
D
GND
9
IN
TEST
10
11
12
13
14
15
16
LATCH
R
RINGING
R
LINE
R
BAT
V
BAT
R
TEST
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T
RINGING
Connect to ringing generator return
Temperature shutdown indicator pin.
Bi-directional I/O with internal pull up to
V
DD
. Output function indicates status of
thermal shutdown circuitry, Input function
can be used to set the “All-Off” mode using
an open-drain type output.
Digital ground
Logic-level switch control input
Data latch control, active high, transparent
low
Connect to ringing generator current
limiting resistor
Connect to ring lead of the line (drop)
Connect to ring lead of the SLIC
Connect to ring lead of SLIC
Battery voltage supply. Must be capable of
sourcing the trigger current for proper
operation of the protection SCR.
IN
RINGING
Logic-level switch control input
3
CPC7584
1.3 Absolute Maximum Ratings (at 25° C)
Parameter
Operating temperature
Storage temperature
Operating relative humidity
Pin soldering temperature
(10 seconds max)
+5 V power supply
Battery Supply
Logic input voltage
Logic input to switch output
isolation
Switch isolation (SW1,
SW2, SW3, SW5, SW6)
Switch Isolation (SW4)
Minimum Maximum
-40
-40
5
-
-0.3
-
-0.3
-
-
-
+110
+150
95
+260
7
-85
V
DD
+0.3
330
330
Unit
°C
°C
%
°C
V
V
V
V
DD
V
BAT1
1
V
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.
1.4.1 Power Supply Specifications
Supply
Minimum Typical Maximum
+4.5
-19
+5.0
-
+5.5
-72
Unit
V
V
465
1.4.2 Break Switches, SW1 and SW2
Parameter
Pr
el
Conditions
1.4 Electrical Characteristics, T
A
= -40° C to +85° C
Unless otherwise specified:
Minimum and maximum values are production testing
requirements. Typical values are provided for
information purposes only and are not part of the
testing requirements. They are characteristic of the
device and are the result of engineering evaluations.
V
DD
= +5V
dc
and V
BAT
= -48V
dc
im
in
ar
y
V
V
V
Symbol
Minimum
+25°C
+85°C
-40°C
I
SW
-
-
R
ON
-
-
∆R
ON
-
-40°C
+25°C
+85°C
-40°C
I
LIM
-
80
-
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BAT
is used only for internal protection circuitry. If V
BAT
rises above -10 V, the device
will enter and remain in the all-off state until the battery exceeds -15 V.
ESD Rating (Human Body Model)
1000 V
Typical
Maximum
Unit
V
SW1
= T
LINE
to T
BAT
V
SW2
= R
LINE
to R
BAT
V
SW
= -320V to GND
V
SW
= +260 V to -60 V
0.1
0.3
0.1
1
µA
Open Contact Isolation -
Off-state leakage current
V
SW
= -330V to GND
V
SW
= +270 V to -60 V
V
SW
= -310 V to GND
V
SW
= +250 V to -60 V
I
SW
= ±10 mA, ±40 mA, T
BAT
= -2 V +25°C
On Resistance
Switch Resistance
Matching
I
SW
= ±10 mA, ±40 mA, T
BAT
= -2 V +85°C
I
SW
= ±10 mA, ±40 mA, T
BAT
= -2 V
Per On Resistance test conditions above.
Magnitude R
ON
SW1 - R
ON
SW2
V
SW
(on) = ±10 V
DC Current Limit
V
SW
(on) = ±10 V
V
SW
(on) = ±10 V
14.5
20.5
10.5
0.15
-
28
-
0.8
Ω
300
160
400
-
-
425
mA
4
Rev. B
CPC7584
Parameter
Dynamic Current Limit
(t = <0.5
µs)
Conditions
Break switches on, all other switches off,
apply ±1 kV 10/1000
µs
pulse to Tip/Ring
interface with appropriate protection in place.
V
SW
(T
LINE
, R
LINE
) = ±320 V
logic inputs = GND
Contacts to Input Isolation
V
SW
(T
LINE
, R
LINE
) = ±330 V
logic inputs = GND
V
SW
(T
LINE
, R
LINE
) = ±310 V,
logic inputs = GND
dv/dt sensitivity
+25°C
+85°C
-40°C
Symbol
I
SW
Minimum
-
Typical
2.5
Maximum
-
Unit
A
0.1
I
SW
-
0.3
0.1
1
µA
Applied voltage = 100 V p-p square wave at
100 Hz
im
in
ar
y
-
-
Symbol
Minimum
+25°C
+85°C
-40°C
I
SW
-
+25°C
+85°C
-40°C
+25°C
+85°C
-40°C
I
SW
-
R
ON
-
I
SW
-
+25°C
+85°C
-40°C
I
SW
-
-
-
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200
-
V/µs
1.4.3 Ringing Return Switch, SW3
Parameter
Conditions
V
SW3
= T
LINE
to T
RINGING
V
SW
= -320V to GND
V
SW
= +260 V to -60 V
V
SW
= -330 V to GND
V
SW
= +270 V to -60 V
V
SW
= -310 V to GND
V
SW
= +250 V to -60 V
Typical
Maximum
Unit
0.1
1
µA
Open Contact Isolation -
Off-state leakage current
0.3
0.1
Pr
I
SW
(on) = ±0 mA, ±10 mA
el
60
85
45
135
85
210
-
100
-
Ω
On Resistance
I
SW
(on) = ±0 mA, ±10 mA
I
SW
(on) = ±0 mA, ±10 mA
V
SW
(on) = ±10 V
DC Current Limit
V
SW
(on) = ±10 V
V
SW
(on) = ±10 V
-
mA
Dynamic current limit
(t = <0.5
µs)
Ringing switches on, all other switches off,
apply ±1 kV 10/1000
µs
pulse to Tip/Ring
interface with appropriate protection in place.
V
SW
(T
LINE
, T
RINGING
) = ±320 V
logic inputs = GND
2.5
-
A
0.1
0.3
0.1
1
µA
Contacts to Input Isolation
V
SW
(T
LINE
, T
RINGING
) = ±330 V
logic inputs = GND
V
SW
(T
LINE
, T
RINGING
) = ±310 V
logic inputs = GND
dv/dt sensitivity
Applied voltage = 100 V p-p square wave at
100 Hz
200
-
V/µs
Rev. B
5
PCB Design
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