Datasheet

DS2408
2 of 39
ABSOLUTE MAXIMUM RATINGS*
P0 to P7, RSTZ, I/O Voltage to GND
-0.5V, +6V
P0 to P7, RSTZ, I/O combined sink current
20mA
Operating Temperature Range
-40°C to +85°C
Junction Temperature
+150°C
Storage Temperature Range
-55°C to +125°C
Lead temperature (soldering 10s)
+300°C
Soldering Temperature (reflow)
+260°C
* This is a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operation sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of time may affect reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 0V or ≥ V
PUP
, T
A
= -40°C or +85°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
1-Wire Pullup
Voltage
V
PUP
Standard speed
2.8
5.25
V
Overdrive speed
3.3
5.25
Standby Supply
Current
I
CCS
V
CC
at V
PUP,
I/O pin at 0.3V
1 µA
I/O Pin General Data
1-Wire Pullup
Resistance
R
PUP
(Notes 1, 2) 2.2
kΩ
Input Capacitance
C
IO
(Notes 3, 4)
1200
pF
Input Load Current I
L
I/O pin at V
PUP,
V
CC
at 0V
1 µA
High-to-Low
Switching Threshold
V
TL
(Notes 4, 5, 6) 0.5 3.2 V
Input-Low Voltage
V
IL
(Notes 1, 7)
0.30
V
Low-to-High
Switching Threshold
V
TH
(Notes 4, 5, 8) 0.8 3.4 V
Switching Hysteresis
V
HY
(Notes 9, 4)
0.16
0.73
V
Output-Low Voltage
at 4mA
V
OL
(Note 10) 0.4 V
Recovery Time
(Note 1)
t
REC
Standard speed, R
PUP
=
2.2k
Ω
5
µs
Overdrive speed, R
PUP
=
2.2k
Ω
2
Overdrive speed, Directly
prior to reset pulse; R
PUP
= 2.2kΩ
5
Rising-Edge Hold-off
Time (Notes 11, 4)
t
REH
Standard speed
0.5
5
µs
Overdrive speed
0.5
2
Timeslot Duration
(Notes 1, 12)
t
SLOT
Standard speed
65
µs
Overdrive speed
10