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Maxim Integrated Semiconductor Electronic Components Datasheet

DS2483 Datasheet

Single-Channel 1-Wire Master

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DS2483
Single-Channel 1-Wire Master
with Adjustable Timing and Sleep Mode
General Description
The DS2483 is an I2C-to-1-WireM bridge device that
interfaces directly to standard (100kHz max) or fast
(400kHz max) I2C masters to perform protocol con-
version between the I2C master and any downstream
1-Wire slave devices. Relative to any attached 1-Wire
slave device, the DS2483 is a 1-Wire master. Internal,
user-adjustable timers relieve the system host processor
from generating time-critical 1-Wire waveforms, support-
ing both standard and overdrive 1-Wire communication
speeds. In addition, the 1-Wire bus can be powered
down under software control. The dual-voltage operation
allows different operating voltages on the I2C and 1-Wire
side. Strong pullup features support 1-Wire power deliv-
ery to 1-Wire devices such as EEPROMs and sensors.
When not in use, the DS2483 can be put in sleep mode
where power consumption is minimal.
Applications
Printers
Medical Instruments
Industrial Sensors
Cell Phones
Benefits and Features
S I2C Host Interface Supports 100kHz and 400kHz
I2C Communication Speeds
S Standard and Overdrive 1-Wire Communication
Speeds
S Adjustable 1-Wire Timing for tRSTL, tMSP, tW0L,
and tREC0
S 1-Wire Port Can Be Powered Down Under
Software Control
S Supports Power-Saving Sleep Mode (SLPZ Pin),
Where the 1-Wire Port is in High Impedance
S I2C Operating Voltages: 1.8V ±5%, 3.3V ±10%, and
5.0V +5/-10%
S Built-In Level Translator: 1-Wire Operating Voltage
from 3.3V -10% to 5.0V +5%, Independent of I2C
Voltage
S Built-In ESD Protection Level of ±8kV Human
Body Model (HBM) Contact Discharge on IO Pin
S -40NC to +85NC Operating Temperature Range
S 8-Pin TDFN and 6-Pin SOT23 Packages
Ordering Information appears at end of data sheet.
Typical Application Circuit
3V
(I2C PORT)
µC
RP*
SDA
SCL
5V
VCC
DS2483
SLPZ
IO 1-Wire BUS
1-Wire
DEVICE #1
1-Wire
DEVICE #2
1-Wire
DEVICE #n
*RP = I2C PULLUP RESISTOR (SEE THE Pullup Resistor RP Sizing SECTION FOR RP SIZING)
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/DS2483.related
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-6164; Rev 2; 2/13


Maxim Integrated Semiconductor Electronic Components Datasheet

DS2483 Datasheet

Single-Channel 1-Wire Master

No Preview Available !

DS2483
Single-Channel 1-Wire Master
with Adjustable Timing and Sleep Mode
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground........-0.5V to +6V
Maximum Current into Any Pin............................................20mA
Continuous Power Dissipation (TA = +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
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
(TA = -40NC to +85NC, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage
I2C Voltage (Note 2)
VCC
VCI2C
1.8V
3.3V
5V
Supply Current
Power-On-Reset Trip Point
IO PIN: GENERAL DATA
ICC
VPOR
No communication, VCC = full range
Sleep mode, VCC = 5.25V
Sleep mode, VCC = 3.6V
VCC = full range
1-Wire Input High Voltage
VIH1
VCC = full range
1-Wire Input Low Voltage
1-Wire Weak Pullup Resistor
1-Wire Output Low Voltage
Active Pullup On-Threshold
Active Pullup On-Time (Note 3)
Active Pullup Impedance
1-Wire Output Fall Time (Note 4)
IO PIN: 1-Wire TIMING (Note 5)
Reset Low Time
Reset High Time
VIL1
RWPU
VOL1
VIAPO
tAPU
RAPU
tF1
VCC = full range
Low range
High range
IOL = 8mA sink current
VCC = full range
1-Wire time slot
1-Wire reset standard speed
1-Wire reset overdrive speed
VCC = 3.0V, 4mA load
VCC = 4.5V, 4mA load
Standard, 10pF < CLOAD < 400pF
Overdrive, 10pF < CLOAD < 400pF
tRSTL
tRSTH
Standard
Overdrive
Standard and overdrive
MIN
2.97
1.71
2.97
4.5
TYP
1.8
3.3
5.0
1.0
MAX
5.25
1.89
3.63
5.25
300
4
3.0
1.5
UNITS
V
V
FA
V
0.6 O
VCC
0.2 O
VCC
375 500 815
700 1000 1375
0.2
0.6 0.95 1.2
See APU bit description
2.375 2.5 2.625
0.475 0.5 0.525
60
40
0.25
1
0.05
0.2
V
V
I
V
V
Fs
I
Fs
-5%
See
Table 7
+5%
Equal to tRSTL
Fs
Fs
Maxim Integrated
  2


Part Number DS2483
Description Single-Channel 1-Wire Master
Maker Maxim Integrated Products
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DS2483 Datasheet PDF






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