Unless otherwise noted, these specifications apply for V

pF. Boldface limits apply for T

characteristics of the LM95231 fully meet or exceed the published specifications of the SMBus version 2.0. The following pa-

rameters are the timing relationships between SMBCLK and SMBDAT signals related to the LM95231. They adhere to but are

not necessarily the SMBus bus specifications.

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 6)

(Note 7)

(Limit)

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

20120209

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

guaranteed to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.

The guaranteed specifications apply only for the test condition listed. Some performance characteristics may degrade when the device is not operated under the

listed test conditions. Operation of the device beyond the Maximum Operating Ratings is not recommended.

Parasitic components and or ESD protection circuitry are shown in the figures below for the LM95231’s pins. Care should be taken not to forward bias the parasitic

diode, D1, present on pins: D1+, D2+, D1−, D2−. Doing so by more than 50 mV may corrupt the temperature measurements.

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