DS2422 Maxim, DS2422 Datasheet - Page 3

• Manufacturer Part Number: DS2422
• Description: The DS2422 temperature/data logger combines the core functions of a fully featured data logger in a single chip
• Manufacturer: Maxim

I/O Pin, 1-Wire Write
Write-0 Low Time
(Notes 1, 14)
Write-1 Low Time
(Notes 1, 14)
I/O Pin, 1-Wire Read
Read Low Time
(Notes 1, 15)
Read Sample Time
(Notes 1, 15)
ALARM Output Pin
Output Low Voltage
Pin Leakage Current
CNVST, SCLK Output Pins
Output Low Voltage
Output High Voltage
PUMP_ONZ Output Pin
Output Low Voltage
Output High Voltage
SDATA Input Pin
Input High Voltage
Input Low Voltage
Pin Leakage Current
Serial Interface Timing
CLK Period
PUMP_ONZ Fall to
CNVST Rise
CNVST Pulse Width
CNVST Fall to SCLK High
(First Clock)
SCLK Period
SDATA Setup Time
SDATA Hold Time
Real-Time Clock
Accuracy
Frequency Deviation
Temperature Converter
Operating Range
Conversion Time (Note 4)
Thermal Response Time
Constant (Notes 4, 17)
Conversion Error
(Notes 4, 18)
Conversion Current
PARAMETER
SYMBOL
t

I
t
t
t
V
V
t
t
t
t
V
V
V
t
t
CONV
CONV
T
V
RING
CPW
RESP
MSR
V
t

W0L
W1L
t
I
I
SCH
SCP
SDS
SDH

RL
LP
LP
SP
OH
OH
TC
OL
OL
OL
IH
IL
F
Standard speed
Overdrive speed, V
(Note 12)
Overdrive speed (Note 12)
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Sink current 4mA
ALARM pin at 6V
V
V
V
V
V
V
V
V
V
V
V
V
SDATA pin at 5.5V
Power-on default (Notes 4, 19)
(Note 4)
(Note 4)
50% duty cycle (Note 4)
(Note 4)
(Note 4)
+25°C (Note 16)
-40°C to +85°C (Note 16)
3V at V
8-bit mode
16-bit mode (11 bits)
SO package
+10°C to +60°C
-40°C to +85°C
(Note 4)
PAD
PAD
PAD
PAD
BAT
BAT
BAT
BAT
BAT
BAT
BAT
BAT
= 3.6V, I
= 2.0V, I
= 3.6V, I
= 2.0V, I
= 3.6V
= 2.0V
= 3.6V
= 2.0V
= 5V, I
= 3V, I
= 5V, I
= 3V, I
BAT
L
L
L
L
CONDITIONS
= 3mA
= 3mA
= 3mA
= 3mA
L
L
L
L
= 2mA
= 2mA
= 0.5mA
= 0.5mA
3 of 49
PUP
> 4.5V
t
t
See Temperature Accuracy
RL
RL
-300
MIN
240
180
3.5
-40
7.5
2.5
1.4
2.5
1.4
0.5
60
70
75
30
-2
6
5
1
5
1
4
2
8
1
3
+ 
+ 
Graphs
TYP
140
400
350
16
50
95
4
1
2
1.95 - 
15 - 
MAX
1260
1.95
1.95
120
144
+60
+85
600
550
4.5
0.3
0.3
0.4
0.4
0.4
0.4
0.7
+2
12
12
15
15
10
18
75
6
9
UNITS
month
min./
PPM
ms
ms
µA
µA
µA
µs
µs
µs
µs
µs
µs
µs
µs
ns
ns
°C
°C
V
V
V
V
V
V
V
s