TCA9535DBT datasheet(7/46 Pages) TI1

No de pièce	TCA9535DBT

Description	Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output and Configuration Registers

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TCA9535

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SCPS201D – AUGUST 2009 – REVISED JULY 2016

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I

2C Interface Timing Requirements (continued)

over recommended operating free-air temperature range (unless otherwise noted) (see Figure 20)

MIN

MAX

UNIT

ticf

I2C input fall time

20 × (VCC /

5.5 V)

300

ns

tocf

I2C output fall time

10-pF to 400-pF bus

20 × (VCC /

5.5 V)

300

ns

tbuf

I2C bus free time between stop and start

1.3

µs

tsts

I2C start or repeated start condition setup

0.6

µs

tsth

I2C start or repeated start condition hold

0.6

µs

tsps

I2C stop condition setup

0.6

µs

tvd(data)

Valid data time

SCL low to SDA output valid

0.9

µs

tvd(ack)

Valid data time of ACK condition

ACK signal from SCL low to

SDA (out) low

0.9

µs

Cb

I2C bus capacitive load

400

pF

6.7 Switching Characteristics

over recommended operating free-air temperature range, CL ≤ 100 pF (unless otherwise noted) (see Figure 20 and Figure 21)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

MAX

UNIT

tiv

Interrupt valid time

P port

INT

4

μs

tir

Interrupt reset delay time

SCL

INT

4

μs

tpv

Output data valid; For VCC = 2.3 V–5.5 V

SCL

P port

200

ns

Output data valid; For VCC = 1.65 V–2.3 V

300

ns

tps

Input data setup time

P port

SCL

150

ns

tph

Input data hold time

P port

SCL

1

μs

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