PCF8574P datasheet(16/33 Pages) NXP

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PCF8574_PCF8574A

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Product data sheet

Rev. 5 — 27 May 2013

16 of 33

NXP Semiconductors

PCF8574; PCF8574A

Remote 8-bit I/O expander for I2C-bus with interrupt

13. Static characteristics

[1]

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

Table 9.

Static characteristics

VDD = 2.5 V to 6 V; VSS =0V; Tamb = 40 C to +85 C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply

VDD

supply voltage

2.5

6.0

IDD

supply current

operating mode; VDD = 6 V; no load;

VI =VDD or VSS; fSCL = 100 kHz

100

A

Istb

standby current

standby mode; VDD = 6 V; no load;

VI =VDD or VSS

-2.5

A

VPOR

power-on reset voltage

VDD =6V; no load; VI =VDD or VSS

[1] -1.3

2.4

Input SCL; input/output SDA

VIL

LOW-level input voltage

0.5

+0.3VDD

VIH

HIGH-level input voltage

0.7VDD

-VDD +0.5

IOL

LOW-level output current

VOL =0.4 V

leakage current

VI =VDD or VSS

1-

A

input capacitance

VI =VSS

I/Os; P0 to P7

VIL

LOW-level input voltage

0.5

+0.3VDD

VIH

HIGH-level input voltage

0.7VDD

-VDD +0.5

IIHL(max)

maximum allowed input current

through protection diode

VI  VDD or VI  VSS

400

A

IOL

LOW-level output current

VOL =1 V; VDD =5V

IOH

HIGH-level output current

VOH =VSS

300

A

Itrt(pu)

transient boosted pull-up current HIGH during acknowledge (see

Figure 8); VOH =VSS; VDD =2.5 V

1-

input capacitance

output capacitance

Interrupt INT (see Figure 8)

IOL

LOW-level output current

VOL =0.4 V

1.6

leakage current

VI =VDD or VSS

1-

A

Select inputs A0, A1, A2

VIL

LOW-level input voltage

0.5

+0.3VDD

VIH

HIGH-level input voltage

0.7VDD

-VDD +0.5

ILI

input leakage current

pin at VDD or VSS

250

+250

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