CPC7593BBTR Clare, CPC7593BBTR Datasheet - Page 17

• Manufacturer Part Number: CPC7593BBTR
• Description: Solid State Relays 10-pole, no SCR, SOIC LCAS, T/R
• Manufacturer: Clare

Specifications of CPC7593BBTR

• Relay Type: Line Card
• Package / Case: SOIC 28

Break-before-make operation of the CPC7593 can be
achieved using two different techniques.
The first method uses manipulation of the (IN
IN
“Break-Before-Make Operation Logic Table (Ringing to Talk
Transition)” on page
1. At the end of the ringing state apply the all-off
The second break-before-make method is also
available for use with all versions of the CPC7593. As
shown in
page 14
R04
* For the CPC7593xA/B versions the input pattern (1,1,1) may also be used for the all-off state.
Ringing
Ringing
Before-
Before-
All-off
Break-
Make
State
State
Make-
Break
TESTin
Talk
Talk
2.3.4 Make-Before-Break Operation Logic Table (Ringing to Talk Transition)
2.3.5 Break-Before-Make Operation
state (1,0,1). This releases the ringing return
switch (SW3) while the ringing switch remains on
waiting for the next zero current event.
2.3.6 Break-Before-Make Operation Logic Table (Ringing to Talk Transition)
2.3.7 Alternate Break-Before-Make Operation
*
*
and
, IN
IN
IN
“Truth Table for CPC7593xA and CPC7593xB” on
RINGING
RINGING
TESTout
“Truth Table for CPC7593xC and CPC7593xD”
1
0
0
1
1
1
0
) logic inputs as shown in
17.
IN
IN
TESTin
TESTin
0
0
0
0
0
0
0
IN
IN
TESTout
TESTout
0
0
0
0
1
1
0
Latch
Latch
0
0
RINGING
T
T
Z
Z
www.clare.com
SD
SD
,
state, current that is limited to the
zero-current crossing to turn off.
Maximum time is one-half of the
Zero-cross current has occurred
Zero current has occurred. SW4
value will be sourced from the
one-half of ringing cycle. SW4
waiting for zero current to turn
ringing cycle. In this transition
break switch dc current limit
Hold this state for at least
ring node of the SLIC.
Break switches close.
SW4 waiting for next
2. Hold the all-off state for at least one-half of a
3. Apply inputs for the next desired state. For the
Break-before-make operation occurs when the ringing
switch opens before the break switches SW1 and
SW2 close.
on page
of the CPC7593 switches when pulled to a logic low.
Although logically disabled, an active (closed) ringing
switch (SW4) will remain closed until the next current
zero crossing event.
has opened
Timing
Timing
off.
ringing cycle to assure that a zero crossing event
occurs and that the ringing switch (SW4) has
opened.
talk state, the inputs would be (0,0,0).
-
-
14, the bi-directional T
Switches
Switches
Break
Break
Off
On
On
Off
Off
Off
On
Ringing
Ringing
Return
Return
Switch
Switch
(SW3)
(SW3)
SD
On
Off
Off
On
Off
Off
Off
interface disables all
Ringing
Ringing
Switch
Switch
(SW4)
(SW4)
On
On
Off
On
On
Off
Off
CPC7593
Switches
Switches
Test
Test
Off
Off
Off
Off
Off
Off
Off
17