Datasheet

3Maxim Integrated
DS2483
Single-Channel 1-Wire Master
with Adjustable Timing and Sleep Mode
ELECTRICAL CHARACTERISTICS (continued)
(T
A
= -40NC to +85NC, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Presence-Detect Sample Time t
MSP
Standard
-5%
See
Table 7
+5%
Fs
Overdrive
Sampling for Short and Interrupt t
SI
Standard 7.6 8 8.4
Fs
Overdrive 0.71 0.75 0.79
Write-One/Read Low Time t
W1L
Standard 7.6 8 8.4
Fs
Overdrive (Note 6) 0.71 0.75 0.79
Read Sample Time t
MSR
Standard 11.4 12 12.6
Fs
Overdrive 1.66 1.75 1.84
Write-Zero Low Time t
W0L
Standard
-5%
See
Table 7
+5%
Fs
Overdrive
Write-Zero Recovery Time t
REC0
Standard and overdrive -5%
See
Table 7
+5%
Fs
1-Wire Time Slot t
SLOT
Standard and overdrive Equal to t
W0L
+ t
REC0
Fs
SLPZ PIN
Low-Level Input Voltage V
IL
V
CC
= full range -0.5 +0.5 V
High-Level Input Voltage V
IH
(Note 7) 1.3 V
CCACT
V
Input Leakage Current (Note 2) I
I
V
CI2C
< 1.89V 6
FA
V
CI2C
< 3.63V 15
V
CI2C
< 5.25V 32
Wake-Up Time from Sleep Mode t
SWUP
(Notes 4, 8) 2 ms
I
2
C SCL AND SDA PINS (Note 9)
Low-Level Input Voltage V
IL
V
CI2C
= full range -0.5
0.3 O
V
CI2C
V
High-Level Input Voltage V
IH
0.7 O
V
CI2C
V
CI2C
+
0.5V
V
Hysteresis of Schmitt Trigger
Inputs (Note 4)
V
HYS
V
CI2C
> 2.0V
0.05 O
V
CI2C
V
V
CI2C
< 2.0V
0.1 O
V
CI2C
Low-Level Output Voltage at
3mA Sink Current
V
OL
V
CI2C
> 2.0V 0.4
V
V
CI2C
< 2.0V
0.2 O
V
CI2C
Output Fall Time from V
IH(MIN)
to
V
IL(MAX)
with a Bus Capacitance
from 10pF to 400pF
t
OF
(Note 4) 60 250 ns
Pulse Width of Spikes
Suppressed by Input Filter
t
SP
50 ns