Logic Electrical Characteristics (Continued)
DIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for +VS = +5 Vdc for LM75BIM-5,
LM75BIMM-5, LM75CIM-5, and LM75CIMM-5 and +VS = +3.3 Vdc for LM75BIM-3, LM75BIMM-3, LM75CIM-3, and
LM75CIMM-3 (Note 6). Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = +25˚C, unless otherwise
noted.
Typical
(Note 12)
Limits
(Note 7)
Units
(Limit)
Symbol
Parameter
Conditions
IO = 3 mA
I2C DIGITAL SWITCHING CHARACTERISTICS Unless otherwise noted, these specifications apply for +VS = +5 Vdc for
LM75BIM-5, LM75BIMM-5, LM75CIM-5, and LM75CIMM-5 and +VS = +3.3 Vdc for LM75BIM-3, LM75BIMM-3, LM75CIM-3,
and LM75CIMM-3. CL (load capacitance) on output lines = 80 pF unless otherwise specified. Boldface limits apply for TA
TJ = TMIN to TMAX; all other limits TA = TJ = +25˚C, unless otherwise noted. The switching characteristics of the LM75 fully
=
meet or exceed the published specifications of the I2C bus. The following parameters are the timing relationships between SCL
and SDA signals related to the LM75. They are not the I2C bus specifications.
Typical
(Note 12)
Limits
(Note 7)
2.5
Units
(Limit)
Symbol
t1
Parameter
Conditions
SCL (Clock) Period
µs (min)
ns (min)
ns (min)
ns (min)
ns (min)
ms (min)
ms (max)
t2
t3
t4
t5
Data in Set-Up Time to SCL High
100
Data Out Stable after SCL Low
0
SDA Low Set-Up Time to SCL Low (Start Condition)
SDA High Hold Time after SCL High (Stop Condition)
100
100
tTIMEOUT SDA Time Low for Reset of Serial Interface (Note 13)
LM75B
LM75C
75
325
Not
Applicable
01265804
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
<
>
+V ) the current at that pin should be limited to 5 mA. The 20 mA
Note 2: When the input voltage (V ) at any pin exceeds the power supplies (V
GND or V
I
I
I
S
maximum package input current rating limits the number of pins that can safely exceedthe power supplies with an input current of 5 mA to four.
Note 3: See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” or the section titled “Surface Mount” found in a current National
Semiconductor Linear Data Book for other methods of soldering surface mount devices.
Note 4: Human body model, 100 pF discharged through a 1.5 kΩ resistor. Machine model, 200 pF discharged directly into each pin.
5
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