Datasheet

2Maxim Integrated
DS2483
Single-Channel 1-Wire Master
with Adjustable Timing and Sleep Mode
Voltage Range on Any Pin Relative to Ground ....... -0.5V to +6V
Maximum Current into Any Pin
...........................................20mA
Continuous Power Dissipation (T
A
= +70NC)
SOT23 (derate 8.7mW/NC above +70NC)
................. 695.7mW
TDFN (derate 16.7mW/NC above +70NC)
............... 1333.3mW
Operating Temperature Range
.......................... -40NC to +85NC
Junction Temperature
.....................................................+150NC
Storage Temperature Range
............................ -55NC to +125NC
Lead Temperature (soldering, 10s)
................................+300NC
Soldering Temperature (reflow)
......................................+260NC
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(T
A
= -40NC to +85NC, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
CC
2.97 5.25 V
I
2
C Voltage (Note 2) V
CI2C
1.8V 1.71 1.8 1.89
V3.3V 2.97 3.3 3.63
5V 4.5 5.0 5.25
Supply Current I
CC
No communication, V
CC
= full range 300
FA
Sleep mode, V
CC
= 5.25V 4
Sleep mode, V
CC
= 3.6V 3.0
Power-On-Reset Trip Point V
POR
V
CC
= full range 1.0 1.5 V
IO PIN: GENERAL DATA
1-Wire Input High Voltage V
IH1
V
CC
= full range
0.6 O
V
CC
V
1-Wire Input Low Voltage V
IL1
V
CC
= full range
0.2 O
V
CC
V
1-Wire Weak Pullup Resistor R
WPU
Low range 375 500 815
I
High range 700 1000 1375
1-Wire Output Low Voltage V
OL1
I
OL
= 8mA sink current 0.2 V
Active Pullup On-Threshold V
IAPO
V
CC
= full range 0.6 0.95 1.2 V
Active Pullup On-Time (Note 3) t
APU
1-Wire time slot See APU bit description
Fs
1-Wire reset standard speed 2.375 2.5 2.625
1-Wire reset overdrive speed 0.475 0.5 0.525
Active Pullup Impedance R
APU
V
CC
= 3.0V, 4mA load 60
I
V
CC
= 4.5V, 4mA load 40
1-Wire Output Fall Time (Note 4) t
F1
Standard, 10pF < C
LOAD
< 400pF 0.25 1
Fs
Overdrive, 10pF < C
LOAD
< 400pF 0.05 0.2
IO PIN: 1-Wire TIMING (Note 5)
Reset Low Time t
RSTL
Standard
-5%
See
Table 7
+5%
Fs
Overdrive
Reset High Time t
RSTH
Standard and overdrive Equal to t
RSTL
Fs