4
4749D–AUTO–10/07
B10011S
ER (error signal) is low when normal operation is disturbed by line faults (interruption, short to
ground or to V
CC
, H to L short disturbance by high voltage transients). After a waiting period due
to transient delays, the controller is asked to test if single-wire operation is possible by changing
the A
sel
and B
sel
state.
A
sel
and B
sel
have an internal pull-up resistor. Therefore, the no-connect state is 1, but connec-
tion to V
DD
is recommended when not in use.
3. Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters Symbol Value Unit
Supply voltage V
CC
–0.5 to +36 V
Controller supply voltage V
DD
–0.5 to +5.5 V
Input voltage at any input V
in
–0.5 to V
DD
V
Junction temperature T
j
150 °C
Storage temperature range T
stg
–55 to +150 °C
Soldering temperature (for 10s maximum) T
sld
260 °C
Operating Conditions
Parameters Symbol Value Unit
Supply voltage car battery V
CC
7 to 32 V
Controller supply voltage V
DD
4.75 to 5.25 V
Control input voltage A
sel
, B
sel
0 to V
DD
V
Input voltage T
x0
0 to V
DD
V
Operating temperature T
amb
–40 to +105 °C
4. Operating Modes
0 = 0V, 1 = 5V
A
sel
B
sel
R
x0
Mode
0 0 3.8V
H, L drivers disabled, L load disabled, S-, S+ disabled station not in operation, but
consuming current
1 0 From H Single-wire H, L driver, L load, S-, S+ disabled
0 1 From L Single-wire L, H driver disabled
1 1 From L-H Two-wire operation, normal mode
