ADT7481ARMZ datasheet(4/24 Pages) AD

Part #	ADT7481ARMZ

Description	Dual Channel Temperature Sensor and Over Temperature Alarm

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Manufacturer	AD [Analog Devices]

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ADT7481

Rev. 0 | Page 4 of 24

TIMING SPECIFICATIONS

Table 2. SMBus Timing Specifications1

Parameter

Limit at TMIN, TMAX

Unit

Description

fSCLK

400

kHz max

tLOW

4.7

μs min

Clock low period, between 10% points

tHIGH

4

μs min

Clock high period, between 90% points

tR

1

μs max

Clock/data rise time

tF

300

ns max

Clock/data fall time

tSU; STA

4.7

μs min

Start condition setup time

tHD; STA2

4

μs min

Start condition hold time

tSU; DAT

T

3

250

ns min

Data setup time

tSU; STO4

4

μs min

Stop condition setup time

tBUF

4.7

μs min

Bus free time between stop and start conditions

1 Guaranteed by design, not production tested.

2 Time from 10% of SDATA to 90% of SCLK.

3 Time for 10% or 90% of SDATA to 10% of SCLK.

4 Time for 90% of SCLK to 10% of SDATA.

SCLK

SDATA

tR

tF

tLOW

tHD;DAT

tHD;STA

tHIGH

tSU;DAT

STOP START

STOP

START

tSU;STA

tSU;STO

tHD;STA

tBUF

Figure 2. Serial Bus Timing

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ADT7481ARMZ Datasheet(PDF) 4 Page - Analog Devices

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