DS2480B
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ABSOLUTE MAXIMUM RATINGS*
Voltage on 1-W to Ground -0.5V to +14.0V
Voltage on RXD, TXD, POL to Ground -0.5V to +7.0V
Operating Temperature Range -40°C to +85°C
Storage Temperature Range -55°C to +125°C
Soldering Temperature See IPC/JEDEC J-STD-020A Specification
* This is a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
DC ELECTRICAL CHARACTERISTICS (V
DD
= 4.5V to 5.5V; -40°C to +85°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage V
DD
4.5 5.0 5.5 V
Programming Voltage V
PP
12.0 12.25 V 1
Operating Current I
DD
3.0 5.0 mA
Idle Current on V
PP
I
PP
20 µA 2
Active Pullup Timer Threshold V
IAPTO
V
DD
- 1.4 V
DD
- 1.1 V
Active Pullup On Threshold V
IAPO
0.95 1.2 V 15
1-Wire Input High V
IH1
3.4 V
1-Wire Input Low V
IL1
1.8 V
TXD/POL Input Resistor R
I
30 kΩ 3
TXD/POL Input Levels V
IH
2.7 V
TXD/POL Input Levels V
IL
0.8 V
1-Wire Weak Pullup Current I
WEAKPU
1.5 3.0 5.0 mA 15
1-Wire Active Pullup Current I
ACTPU
9 15 mA
Strong Pullup Voltage Drop
@ 10mA load on 1-W
DV
STRPU
0.6 V 4
Programming Voltage Drop
@ 10mA load on 1-W
DV
PROG
0.30 V 5
RXD Sink Current @ 0.4V I
OLR
6 mA
RXD Source Current @ V
DD
-0.4V I
OHR
-4 mA
Power On Reset Trip Point V
POR
3.3 V
V
PP
Sensor Trip Point V
PPTRIP
9.5 V
CAPACITANCES (t
A
= 25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
TXD/POL Input Capacitance C
IN
5 pF 17
1-Wire Input Capacitance C
IN1
10 pF 17
