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LM89 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM89
Description  짹0.75째C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM89 Datasheet(HTML) 5 Page - National Semiconductor (TI)

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Temperature-to-Digital Converter Characteristics (Continued)
Unless otherwise noted, these specifications apply for V
DD=+3.0Vdc to 3.6Vdc. Boldface limits apply for TA =TJ =
T
MIN
≤T
A
≤T
MAX; all other limits TA=TJ=+25˚C, unless otherwise noted.
Parameter
Conditions
Typical
Limits
Units
(Note 6)
(Note 7)
(Limit)
Remote T_CRIT Default Temperature Setting
(Note 11)
+110
˚C
Logic Electrical Characteristics
DIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for V
DD=+3.0 to 3.6 Vdc. Boldface lim-
its apply for T
A =TJ =TMIN to TMAX; all other limits TA=TJ=+25˚C, unless otherwise noted.
Symbol
Parameter
Conditions
Typical
Limits
Units
(Note 6)
(Note 7)
(Limit)
SMBData, SMBCLK INPUTS
V
IN(1)
Logical “1” Input Voltage
2.1
V (min)
V
IN(0)
Logical “0”Input Voltage
0.8
V (max)
V
IN(HYST)
SMBData and SMBCLK Digital
Input Hysteresis
400
mV
I
IN(1)
Logical “1” Input Current
V
IN =VDD
0.005
±10
µA (max)
I
IN(0)
Logical “0” Input Current
V
IN = 0 V
−0.005
±10
µA (max)
C
IN
Input Capacitance
5
pF
ALL DIGITAL OUTPUTS
I
OH
High Level Output Current
V
OH =VDD
10
µA (max)
V
OL
SMBus Low Level Output Voltage
I
OL = 4mA
I
OL = 6mA
0.4
0.6
V (max)
SMBus DIGITAL SWITCHING CHARACTERISTICS Unless otherwise noted, these specifications apply for V
DD=+3.0 Vdc to
+3.6 Vdc, C
L (load capacitance) on output lines = 80 pF. Boldface limits apply for TA =TJ =TMIN to TMAX; all other limits
T
A =TJ = +25˚C, unless otherwise noted. The switching characteristics of the LM89 fully meet or exceed the published specifi-
cations of the SMBus version 2.0. The following parameters are the timing relationships between SMBCLK and SMBData sig-
nals related to the LM89. They adhere to but are not necessarily the SMBus bus 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
V
IN(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 = 400pF,
I
O = 3mA, (Note 13)
250
ns (max)
t
TIMEOUT
SMBData 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
900
ns (min)
ns (max)
t
HD;STA
Start Condition SMBData Low to SMBCLK
Low (Start condition hold before the first
clock falling edge)
100
ns (min)
t
SU;STO
Stop Condition SMBCLK High to SMBData
Low (Stop Condition Setup)
100
ns (min)
t
SU;STA
SMBus Repeated Start-Condition Setup
Time, SMBCLK High to SMBData Low
0.6
µs (min)
t
BUF
SMBus Free Time Between Stop and Start
Conditions
1.3
µs (min)
www.national.com
5


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