LM90CIMMX National Semiconductor, LM90CIMMX Datasheet - Page 6

• Manufacturer Part Number: LM90CIMMX
• Manufacturer: National Semiconductor

Specifications of LM90CIMMX

• Temperature Sensor Function: Temp Sensor
• Interface Type: Serial (2-Wire)
• Output Type: Digital
• Package Type: MSOP
• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / Rohs Status: Not Compliant

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t
t
SU;STA
BUF
Symbol
SMBus DIGITAL SWITCHING CHARACTERISTICS
Unless otherwise noted, these specifications apply for V
pF. Boldface limits apply for T
The switching characteristics of the LM90 fully meet or exceed the published specifications of the SMBus version 2.0. The fol-
lowing parameters are the timing relationships between SMBCLK and SMBData signals related to the LM90. They adhere to
but are not necessarily the SMBus bus specifications.
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.
Note 2: When the input voltage (V
Parasitic components and or ESD protection circuitry are shown in the figure below for the LM90’s pins. The nominal breakdown voltage of D3 is 6.5 V. Care should
be taken not to forward bias the parasitic diode, D1, present on pins: D+, D−. Doing so by more than 50 mV may corrupt a temperature measurements.
Note: An “x” indicates that the diode exists.
Note 3: See the URL ”http://www.national.com/packaging/“ for other recommendations and methods of soldering surface mount devices.
Note 4: Human body model, 100pF discharged through a 1.5k
Note 5: Thermal resistance junction-to-ambient when attached to a printed circuit board with 2 oz. foil:
Note 6: Typicals are at T
– MSOP-8 = 210˚C/W
Pin Name
V
D+
D−
T_CRIT_A
ALERT
SMBData
SMBCLK
DD
SMBus Repeated Start-Condition Setup
Time, SMBCLK High to SMBData Low
SMBus Free Time Between Stop and Start
Conditions
PIN #
1
2
3
4
6
7
8
A
= 25˚C and represent most likely parametric norm.
Parameter
I
) at any pin exceeds the power supplies (V
D1
x
x
A
= T
J
D2
x
x
= T
FIGURE 1. ESD Protection Input Structure
MIN
to T
D3
SMBus Communication
resistor. Machine model, 200pF discharged directly into each pin.
MAX
; all other limits T
DD
D4
=+3.0 Vdc to +3.6 Vdc, C
I
<
6
Conditions
GND or V
D5
x
I
A
>
D6
= T
V
x
x
DD
J
), the current at that pin should be limited to 5 mA.
= +25˚C, unless otherwise noted.
20033713
D7
L
x
x
x
x
x
(load capacitance) on output lines = 80
(Note 6)
Typical
R1
x
x
x
x
SNP
(Note 7)
Limits
x
x
x
x
0.6
1.3
ESD CLAMP
20033740
µs (min)
µs (min)
(Limit)
Units
x
x
x