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DS1922E Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # DS1922E
Description  High-Temperature Logger iButton with 8KB Data-Log Memory
Download  44 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1922E Datasheet(HTML) 3 Page - Maxim Integrated Products

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High-Temperature Logger iButton with 8KB
Data-Log Memory
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VPUP = 3.0V to 5.25V.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Standard speed, VPUP > 4.5V
1.5
5
Standard speed
1.5
8
Presence-Detect Fall Time
(Note 13)
tFPD
Overdrive speed
0.15
1
μs
Standard speed, VPUP > 4.5V
60
240
Standard speed (Note 12)
60
287
Overdrive speed, VPUP > 4.5V (Note 12)
7
24
Presence-Detect Low Time
tPDL
Overdrive speed (Note 12)
728
μs
Standard speed, VPUP > 4.5V
65
75
Standard speed
71.5
75
Presence-Detect Sample Time
(Note 2)
tMSP
Overdrive speed
8
9
μs
I/O PIN 1-Wire WRITE
Standard speed
60
120
Overdrive speed, VPUP > 4.5V (Note 12)
6
12
Write-Zero Low Time
(Notes 2, 14)
tW0L
Overdrive speed (Note 12)
7.5
12
μs
Standard speed
5
15
Write-One Low Time
(Notes 2, 14)
tW1L
Overdrive speed
1
1.95
μs
I/O PIN 1-Wire READ
Standard speed
5
15 -
Read Low Time
(Notes 2, 15)
tRL
Overdrive speed
1
1.95 -
μs
Standard speed
tRL +
15
Read Sample Time
(Notes 2, 15)
tMSR
Overdrive speed
tRL +
1.95
μs
REAL-TIME CLOCK (RTC)
Accuracy
See the RTC Accuracy
graph
Min/
Month
Frequency Deviation
F
0°C to +125°C
-600
+60
ppm
TEMPERATURE CONVERTER
8-bit mode
30
75
Conversion Time
(Note 16)
tCONV
16-bit mode (11 bits)
240
600
ms
Thermal Response Time
Constant (Note 17)
RESP
iButton package
130
s
+15°C to +110°C (Note 20)
±7
Conversion Error (Notes 18, 19)
+110°C to +140°C
-1.5
+1.5
°C
Temperature Cycles
NTCY
Cycle = ramp from +25°C to > +125°C
and back to +25°C (Note 21)
300
Cycles
Operating Lifetime
tLIFE
Temperature > +125°C (Note 21)
300
Hours


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