CPC7582
1.10 CPC7582xC Truth Table
Break
Switches
Ringing
Switches
Test
Switches
IN
IN
T
SD
State
LATCH
RINGING
TEST
Talk
0
0
1
1
X
X
0
1
0
1
X
X
On
On
Off
Off
Off
Off
Off
On
Off
On
Test/Monitor
Ringing
0
1 or
On
1
Floating
Ringing Test
Latched
On
1
Unchanged
Off
2
All off
X
Off
Off
0
1
If T is tied high, thermal shutdown is disabled. If T is left floating, the thermal shutdown mechanism functions normally.
SD
SD
2
Forcing T to ground overrides the logic input pins and forces an all off state.
SD
R05
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