DS2422 Datasheet, PDF (2/48 Pages) Dallas Semiconductor – 1-Wire Temperature/Datalogger with 8kB Datalog Memory

ABSOLUTE MAXIMUM RATINGS*
ALARM, PUMP_ONZ, SDATA, SCLK, CNVST, VPAD,
I/O Voltage to GND
ALARM, PUMP_ONZ, I/O Combined Sink Current
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Soldering Temperature
-0.3V, +6V
20mA
-40°C to +85°C
+150°C
-55°C to +125°C
See IPC/JEDEC J-STD-020A
DS2422
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.
ELECTRICAL CHARACTERISTICS
(V_PUP = 3.0V to 5.25V, V_BAT = 2.0V to 3.6V, V_PAD = 3.0V to 5.5V, T_A = -40°C to +85°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
Standby Supply Current
IBAT1
IBAT0
VBAT at 3.0V, I/O at 0V, RTC on
VBAT at 3.6V, I/O at 0V, RTC off
Ground Current
IGND
Applies individually to GND, AGND
(Note 1)
I/O Pin General Data
1-Wire Pullup Resistance
RPUP
(Notes 1, 2)
Input Capacitance
Input Load Current
CIO
(Notes 3, 4)
IL
I/O pin at VPUP, VBAT = 3.6V
High-to-Low Switching
Threshold
VTL
(Notes 4, 5, 6)
0.4
Input Low Voltage
VIL
(Notes 1, 7)
Low-to-High Switching
Threshold
VTH
(Notes 4, 5, 8)
0.7
Switching Hysteresis
VHY
(Notes 4, 9)
0.09
Output Low Voltage
VOL
At 4mA (Note 10)
Standard speed, RPUP = 2.2kW
5
Recovery Time (Note 1)
tREC
Overdrive speed, RPUP = 2.2kW
Overdrive speed, directly prior to reset
pulse; RPUP = 2.2kW
2
5
Rising-Edge Hold-off Time
tREH
(Notes 4, 11)
0.6
Standard speed
65
Timeslot Duration (Note 1)
tSLOT
Overdrive speed, VPUP > 4.5V
8
Overdrive speed (Note 12)
9.5
I/O Pin, 1-Wire Reset, Presence Detect Cycle
Standard speed, VPUP > 4.5V
480
Reset Low Time (Note 1)
tRSTL
Standard speed (Note 12)
Overdrive speed, VPUP > 4.5V
690
48
Overdrive speed (Note 12)
70
Presence Detect High
Time
Standard speed, VPUP > 4.5V
tPDH
Standard speed (Note 12)
Overdrive speed (Note 12)
15
15
2
Presence Detect Fall Time
(Notes 4, 13)
Standard speed, VPUP > 4.5V
tFPD
Standard speed
Overdrive speed
1.5
1.5
0.15
Standard speed, VPUP > 4.5V
60
Presence Detect Low
Time
Standard speed (Note 12)
tPDL
Overdrive speed, VPUP > 4.5V
(Note 12)
60
7
Overdrive speed (Note 12)
7
Presence Detect Sample
Time (Note 1)
Standard speed, VPUP > 4.5V
tMSP
Standard speed
Overdrive speed
65
71.5
8
TYP
1200
50
100
6
MAX
2000
650
20
UNITS
nA
mA
2.2
kW
800
pF
10
µA
3.2
V
0.3
V
3.4
V
N/A
V
0.4
V
µs
2.0
µs
µs
720
720
80
µs
80
60
63.5
µs
7
5
8
µs
1
240
287
24
µs
28
75
75
µs
9
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