PCF8575 查看數據表（PDF） - NXP Semiconductors.

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PCF8575

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

NXP Semiconductors. 

Philips Semiconductors

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

Product specification

PCF8575

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

IL2

leakage current on all other signal VI = VDD or VSS

pins

−10

−

+10

µA

Input SCL; input/output SDA

IOL

LOW-level output current

CI

input capacitance

I/Os; P00 to P07 and P10 to P17

VOL = 0.4 V; note 3

3

−

−

mA

VI = VSS; note 2

−

−

7

pF

IOL

LOW-level output current

IOH

HIGH-level output current

IOHt

transient pull-up current

CI

input capacitance

CO

output capacitance

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

tpv

output data valid

tsu

input data set-up time

th

input data hold time

Interrupt INT (see Fig.13)

VOL = 1 V; note 3

VOH = VSS

VOH = VSS; see Fig.9

note 2

note 2

10

−30

−0.5

−

−

−

0

4

25

−

−1.0

−

−

−

−

−

−

mA

−300 µA

−

mA

10

pF

10

pF

4

µs

−

µs

−

µs

IOL

LOW-level output current

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

tiv

input data valid time

tir

reset delay time

VOL = 0.4 V

1.6

−

−

mA

−

−

4

µs

−

−

4

µs

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.

1999 Apr 07

14

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