PCF8575 datasheet(14/24 Pages) PHILIPS

14 / 24 page

1999 Apr 07

Philips Semiconductors

Product speciﬁcation

Remote 16-bit I/O expander for I2C-bus

PCF8575

Notes

1. The power-on reset circuit resets the I2C-bus logic with VDD <VPOR and sets all I/Os to logic 1 (with current source

to VDD).

2. The value is not tested, but verified on sampling basis.

3. A single LOW-level output current (IOL) must not exceed 20 mA for an extended time. The sum of all IOLs at any point

in time must not exceed 100 mA.

IL2

leakage current on all other signal

pins

VI =VDD or VSS

−10

−

+10

µA

Input SCL; input/output SDA

IOL

LOW-level output current

VOL = 0.4 V; note 3

−−

input capacitance

VI =VSS; note 2

−−

7pF

I/Os; P00 to P07 and P10 to P17

IOL

LOW-level output current

VOL = 1 V; note 3

−

IOH

HIGH-level output current

VOH =VSS

−30

−−300

µA

IOHt

transient pull-up current

VOH =VSS; see Fig.9

−0.5

−1.0

−

input capacitance

note 2

−−

output capacitance

note 2

−−

Port timing; CL ≤ 100 pF (see Figs 9 and 10)

tpv

output data valid

−−

µs

tsu

input data set-up time

−−µs

input data hold time

−−µs

Interrupt INT (see Fig.13)

IOL

LOW-level output current

VOL = 0.4 V

1.6

−−

TIMING;CL ≤ 100 pF (see Figs 9 and 10)

tiv

input data valid time

−−

µs

tir

reset delay time

−−

µs

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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