TMP442 datasheet(7/57 Pages) TI2

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6.5 Electrical Characteristics (continued)

Over free-air temperature range at TA = –40°C to 125°C and VDD = 1.62V to 5.5V (unless otherwise noted); Typical

specifications are at TA = 25°C and VDD = 3.3V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IDD_SD

Shutdown current

Serial bus inactive

TA = 25°C

0.5

0.8

μA

TA = –40°C to 125°C

μA

Serial bus active. fs = 400kHz

6.9

μA

Serial bus active. fs = 1MHz

15.2

μA

VPOR

Power-on reset threshold

voltage

Supply rising

1.2

1.4

Brownout detect

Supply falling

1.0

1.1

tPOR

Device initialization time

(1)

Repeatability is the ability to reproduce a reading when the measured temperature is applied consecutively, under the same conditions.

(2)

Quiescent current between conversions in continuous conversion mode

6.6 I2C Interface Timing

minimum and maximum specifications are over –40°C to 125°C and VDD = 1.62V to 5.5V (unless otherwise noted)(1)

STANDARD MODE

FAST MODE

FAST MODE PLUS

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

f(SCL)

SCL operating frequency(2)

100

400

1000

kHz

t(BUF)

Bus-free time between STOP and START

conditions

4.7

–

1.3

–

0.5

–

µs

t(SUSTA)

Repeated START condition setup time

4.7

–

0.6

–

0.26

–

µs

t(HDSTA)

Hold time after repeated START condition.

After this period, the first clock is generated.

4.0

–

0.6

–

0.26

–

µs

t(SUSTO)

STOP condition setup time

4.0

–

0.6

–

0.26

–

µs

t(HDDAT)

Data hold time(3)

3450

900

150

t(SUDAT)

Data setup time

250

–

100

–

t(LOW)

SCL clock low period

4.7

–

1.3

–

0.5

–

µs

t(HIGH)

SCL clock high period

4.0

–

0.6

–

0.26

–

µs

t(VDAT)

Data valid time (data response time)(4)

–

3.45

0.9

–

0.45

µs

Clock and data rise time(5)

–

1000

300

–

120

Clock and data fall time

–

300

20 ×

(VDD /

5.5V)

300

20 ×

(VDD /

5.5V)

120

(1)

The controller and target have the same I/O supply value. Values are based on statistical analysis of samples tested during initial

release.

(2)

The TMP4719 is equipped with a 50ns spike filter on both SCL and SDA lines. The filter allows the device to be used alongside I3C

devices without impacting the communication.

(3)

The maximum t(HDDAT) can be 3.45µs and 0.9µs for Standard Mode and Fast Mode, but must be less than the maximum of t(VDAT) by a

transition time.

(4)

t(VDAT) = time for data signal from SCL LOW to SDA output (HIGH to LOW, depending on which is worse).

(5)

The TMP4719 is not sensitive to rise and fall time.

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