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LM95235 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM95235
Description  Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM95235 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Logic Electrical Characteristics (Continued)
SMBus Digital Switching Characteristics
Unless otherwise noted, these specifications apply for V
DD= +3.0 Vdc to +3.6 Vdc, CL (load capacitance) on output lines =
80 pF. Boldface limits apply for T
A =TJ =TMIN to TMAX; all other limits TA =TJ = +25˚C, unless otherwise noted. The
switching characteristics of the LM95235 fully meet or exceed the published specifications of the SMBus version 2.0. The fol-
lowing parameters are the timing relationships between SMBCLK and SMBDAT signals related to the LM95235. They adhere
to, but are not necessarily, the SMBus specifications.
Symbol
Parameter
Conditions
Typical
Limits
Units
(Note
6)
(Note 7)
(Limit)
f
SMB
SMBus Clock Frequency
100
10
kHz (max)
kHz (min)
t
LOW
SMBus Clock Low Time
from V
IN(0)max to VIN(0)max
4.7
25
µs (min)
ms (max)
t
HIGH
SMBus Clock High Time
from V
IN(1)min to VIN(1)min
4.0
µs (min)
t
R,SMB
SMBus Rise Time
(Note 12)
1
µs (max)
t
F,SMB
SMBus Fall Time
(Note 13)
0.3
µs (max)
t
OF
Output Fall Time
C
L = 400 pF,
I
O = 3 mA, (Note 13)
250
ns (max)
t
TIMEOUT
SMBDAT and SMBCLK Time Low for Reset
of Serial Interface (Note 14)
25
35
ms (min)
ms (max)
t
SU;DAT
Data In Setup Time to SMBCLK High
250
ns (min)
t
HD;DAT
Data Out Stable after SMBCLK Low
300
1075
ns (min)
ns (max)
t
HD;STA
Start Condition SMBDAT Low to SMBCLK
Low (Start condition hold before the first
clock falling edge)
100
ns (min)
t
SU;STO
Stop Condition SMBCLK High to SMBDAT
Low (Stop Condition Setup)
100
ns (min)
t
SU;STA
SMBus Repeated Start-Condition Setup
Time, SMBCLK High to SMBDAT Low
0.6
µs (min)
t
BUF
SMBus Free Time Between Stop and Start
Conditions
1.3
µs (min)
SMBus Communication
20174909
www.national.com
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