PCF8574 datasheet(13/24 Pages) PHILIPS

13 / 24 page

1997 Apr 02

Philips Semiconductors

Product speciﬁcation

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

PCF8574

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

HANDLING

Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is

desirable to take precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC12 under

“Handling MOS Devices”.

10 DC CHARACTERISTICS

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

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

VDD

supply voltage

−0.5

+7.0

input voltage

VSS − 0.5

VDD + 0.5

DC input current

−±20

DC output current

−±25

IDD

supply current

−±100

ISS

supply current

−±100

Ptot

total power dissipation

−

400

power dissipation per output

−

100

Tstg

storage temperature

−65

+150

°C

Tamb

operating ambient temperature

−40

+85

°C

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

VDD

supply voltage

2.5

−

6.0

IDD

supply current

operating mode; VDD =6V;

no load; VI =VDD or VSS;

fSCL = 100 kHz

−

100

µA

Istb

standby current

standby mode; VDD =6V;

no load; VI =VDD or VSS

−

2.5

µA

VPOR

Power-on reset voltage

VDD = 6 V; no load;

VI =VDD or VSS; note 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

−

µA

input capacitance

VI =VSS

−−

7pF

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