_______________________________________________________________________________________ 3
Note 1: T
A
= +25癈 to +85癈.
Note 2: If both the local and the remote junction are below T
A
= -20癈, then V
CC
> 3.15V.
Note 3: For conversion rates of 4Hz or slower, the conversion time doubles.
Note 4: Timing specifications guaranteed by design.
Note 5: The serial interface resets when SMBCLK is low for more than t
TIMEOUT
.
Note 6: A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SMBCLK's falling edge.
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.0V to +5.5V, T
A
= 0癈 to +125癈, unless otherwise specified. Typical values are at V
CC
= +3.3V and T
A
= +25癈.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
0.25 conversions/s
40
70
Average Operating Current
2 conversions/s
150
250
礎
Conversion Time
t
CONV
From stop bit to conversion completed
(Note 4)
95
125
156
ms
Conversion Timing Error
?5
%
DXP and DXN Leakage Current
In standby mode
100
nA
High level
80
100
120
Remote-Diode Source Current
I
RJ
Low level
8
10
12
礎
(ALERT, OVERT)
V
OL
= 0.4V
1
Output Low Sink Current
V
OL
= 0.6V
6
mA
Output High Leakage Current
V
OH
= 5.5V
1
礎
SMBus-COMPATIBLE INTERFACE (SMBCLK, SMBDATA, STBY)
Logic Input Low Voltage
V
IL
0.8
V
V
CC
= +3.0V
2.2
Logic Input High Voltage
V
IH
V
CC
= +5.5V
2.4
V
Input Leakage Current
I
LEAK
V
IN
= V
GND
or V
CC
?
礎
Output Low Sink Current
I
OL
V
OL
= 0.6V
6
mA
Input Capacitance
C
IN
5
pF
SMBus-COMPATIBLE TIMING (Note 4)
Serial-Clock Frequency
f
SCL
(Note 5)
100
kHz
Bus Free Time Between STOP
and START Condition
t
BUF
4.7
祍
START Condition Setup Time
4.7
祍
Repeat START Condition Setup
Time
t
SU:STA
90% to 90%
50
ns
START Condition Hold Time
t
HD:STA
10% of SMBDATA to 90% of SMBCLK
4
祍
STOP Condition Setup Time
t
SU:STO
90% of SMBCLK to 90% of SMBDATA
4
祍
Clock Low Period
t
LOW
10% to 10%
4.7
祍
Clock High Period
t
HIGH
90% to 90%
4
祍
Data Setup Time
t
HD:DAT
(Note 6)
0
祍
Receive SCL/SDA Rise Time
t
R
1
祍
Receive SCL/SDA Fall Time
t
F
300
ns
Pulse Width of Spike Suppressed
t
SP
0
50
ns
SMBus Timeout
SMBDATA low period for interface reset
25
37
45
ms
?癈, SMBus-Compatible Remote/Local Temperature
Sensors with Overtemperature Alarms
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