EG_GenLoc41e_1055_UG_003_UK
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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCOGENER reserves the right to make any modifications.
Dct_427_02
8.2.4.7 Bus One Wire (0 - 3.3V) multi-salves Dallas on INPUT3
As an option on the GenLoc 41e, it is possible to have an input Bus One Wire multi slaves instead of the
opto-coupled input E3.
The bus is managed by a DS 2482S-100 from the manufacturer Maxim.
Table: Main electric characteristics of the DS2482S-100
Characteristics
Symbols
Conditions
Min.
Typ.
Max.
Unit
1-Wire Input High
V
IH1
1.9
V
dc
1-Wire Input Low
V
IL1
0.9
V
dc
1-Wire Weak Pullup
Resistor
R
WPU
1 000
1 675
Ω
1-Wire Output Low
V
OL1
At 4mA load
0.4
V
dc
Active Pullup On Time
t
APUOT
Standard
2.3
2.5
2.7
µs
Overdrive
0.4
0.5
0.6
µs
Strong Pullup Voltage Drop
ΔV
STRPU
VCC ≥ 3.2V, 1.5mA load
0.3
V
dc
Pulldown Slew Rate
PD
SRC
Standard (3.3V ±10%)
1
4.2
V
dc
/μs
Overdrive (3.3V ±10%)
5
22.1
V
dc
/μs
Pullup Slew Rate
PU
SRC
Standard (3.3V ±10%)
0.8
4
V
dc
/μs
Overdrive (3.3V ±10%)
2.7
20
V
dc
/μs
For more information, see the documentation of the manufacturer.
http://datasheets.maxim-ic.com/en/ds/DS2482-100.pdf
Internal electric scheme of the bus One Wire multi salves
The integrator has the responsibility to protect the input from electric disturbances and to
respect the values of the functioning parameters.