參數(shù)資料
型號(hào)： DS1922T
英文描述： Temperature Logger iButton with 8kB Datalog Memory
文件頁(yè)數(shù)： 2/48頁(yè)
文件大?。?/td> 428K
代理商： DS1922T
DS1922L/DS1922T
2 of 48
ABSOLUTE MAXIMUM RATINGS
I/O Voltage to GND
I/O Sink Current
Operating Temperature Range (DS1922L)
Operating Temperature Range (DS1922T)
Junction Temperature
Storage Temperature Range (DS1922L)
Storage Temperature Range (DS1922T)
-0.3V, +6V
20mA
-40°C to +85°C
0°C to +125°C
+150°C
-40°C to +85°C*
0°C to +125°C*
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 the absolute maximum rating conditions for extended periods may affect device.
*Storage or operation above +50°C significantly reduces battery life.
ELECTRICAL CHARACTERISTICS
(V
PUP
= 3.0V to 5.25V, T
A
= -40°C to +85°C)
PARAMETER
I/O Pin General Data
1-Wire Pullup Resistance
Input Capacitance
Input Load Current
High-to-Low Switching
Threshold
Input Low Voltage
Low-to-High Switching
Threshold
Switching Hysteresis
Output Low Voltage
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
PUP
C
IO
I
L
(Notes 1, 2)
(Note 3)
I/O pin at V
PUP
2.2
800
10
k
pF
μA
100
6
V
TL
(Notes 4, 5)
0.4
3.2
V
V
IL
(Notes 1, 6)
0.3
V
V
TH
(Notes 4, 7)
0.7
3.4
V
V
HY
V
OL
(Note 8)
At 4mA (Note 9)
Standard speed, R
PUP
= 2.2k
Overdrive speed, R
PUP
= 2.2k
Overdrive speed, directly prior to reset
pulse; R
PUP
= 2.2k
(Note 10)
Standard speed
Overdrive speed, V
PUP
> 4.5V
Overdrive speed (Note 11)
0.09
N/A
0.4
V
V
5
2
Recovery Time (Note 1)
t
REC
5
μs
Rising-Edge Hold-Off Time
t
REH
0.6
65
8
9.5
2.0
μs
Timeslot Duration (Note 1)
t
SLOT
μs
I/O Pin, 1-Wire Reset, Presence Detect Cycle
Standard speed, V
PUP
> 4.5V
Standard speed (Note 11)
Overdrive speed, V
PUP
> 4.5V
Overdrive speed (Note 11)
Standard speed, V
PUP
> 4.5V
Standard speed (Note 11)
Overdrive speed (Note 11)
Standard speed, V
PUP
> 4.5V
Standard speed
Overdrive speed
Standard speed, V
PUP
> 4.5V
Standard speed (Note 11)
Overdrive speed, V
PUP
> 4.5V (Note 11)
Overdrive speed (Note 11)
Standard speed, V
PUP
> 4.5V
Standard speed
Overdrive speed
480
690
48
70
15
15
2
1.5
1.5
0.15
60
60
7
7
65
71.5
8
720
720
80
80
60
63.5
7
5
8
1
240
287
24
28
75
75
9
Reset Low Time (Note 1)
t
RSTL
μs
Presence Detect High
Time
t
PDH
μs
Presence Detect Fall Time
(Note 12)
t
FPD
μs
Presence Detect Low
Time
t
PDL
μs
Presence Detect Sample
Time (Note 1)
t
MSP
μs
I/O Pin, 1-Wire Write
Standard speed
Overdrive Speed, V
PUP
> 4.5V (Note 11)
Overdrive speed (Note 11)
Standard speed
Overdrive speed
60
6
7.5
5
1
120
12
12
15 -
1.95 -
Write-0 Low Time (Note 1)
t
W0L
μs
Write-1 Low Time
(Notes 1, 13)
t
W1L
μs
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