DS1922L Ver la hoja de datos (PDF) - Maxim Integrated
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componentes Descripción
Fabricante
DS1922L Datasheet PDF : 52 Pages
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Temperature Logger iButton with 8KB
Data-Log Memory
ABSOLUTE MAXIMUM RATINGS
IO Voltage Range to GND ........................................-0.3V to +6V
IO Sink Current....................................................................20mA
Operating Temperature Range
DS1922L ...........................................................-40°C to +85°C
DS1922T ............................................................0°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range*
DS1922L..........................................................-40°C to +85°C*
DS1922T ...........................................................0°C to +125°C*
*Storage or operation above +50°C significantly reduces battery life.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation 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
(VPUP = +3.0V to +5.25V.)
PARAMETER
SYMBOL
CONDITIONS
Operating Temperature
DS1922L (Note 1)
TA
DS1922T (Note 1)
IO PIN: GENERAL DATA
1-Wire Pullup Resistance
RPUP (Notes 2, 3)
Input Capacitance
Input Load Current
CIO
(Note 4)
IL
IO pin at VPUP
High-to-Low Switching Threshold
VTL
(Notes 5, 6)
Input Low Voltage
VIL
(Notes 2, 7)
Low-to-High Switching Threshold
VTH
(Notes 5, 8)
Switching Hysteresis
VHY
(Note 9)
Output Low Voltage
VOL
At 4mA (Note 10)
Recovery Time (Note 2)
tREC
Standard speed, RPUP = 2.2k
Overdrive speed, RPUP = 2.2k
Overdrive speed, directly prior to reset
pulse; RPUP = 2.2k
Rising-Edge Hold-Off Time
tREH (Note 11)
Standard speed
Time-Slot Duration (Note 2)
tSLOT
Overdrive speed, VPUP > 4.5V
Overdrive speed (Note 12)
IO PIN: 1-Wire RESET, PRESENCE-DETECT CYCLE
Standard speed, VPUP > 4.5V
Reset Low Time (Note 2)
tRSTL
Standard speed (Note 12)
Overdrive speed, VPUP > 4.5V
Overdrive speed (Note 12)
Presence-Detect High Time
tPDH
Standard speed, VPUP > 4.5V
Standard speed (Note 12)
Overdrive speed (Note 12)
Presence-Detect Fall Time
(Note 13)
Standard speed, VPUP > 4.5V
tFPD Standard speed
Overdrive speed
MIN TYP MAX UNITS
-40
+85
°C
0
+125
2.2
k
100 800
pF
6
10
μA
0.4
3.2
V
0.3
V
0.7
3.4
V
0.09
N/A
V
0.4
V
5
2
μs
5
0.6
2.0
μs
65
8
μs
9.5
480
720
690
720
μs
48
80
70
80
15
60
15
63.5
μs
2
7
1.5
5
1.5
8
μs
0.15
1
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