Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I2C-bus
PCF8574
8
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER
VDD
MIN.
MAX.
UNIT
supply voltage
−0.5
+7.0
VDD + 0.5
±20
V
V
VI
input voltage
V
−
−
−
−
−
−
SS − 0.5
II
DC input current
DC output current
supply current
mA
mA
mA
mA
mW
mW
°C
IO
±25
IDD
ISS
Ptot
PO
Tstg
Tamb
±100
±100
400
supply current
total power dissipation
power dissipation per output
storage temperature
100
−65
−40
+150
+85
operating ambient temperature
°C
9
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
Supply
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VDD
IDD
supply voltage
2.5
−
6.0
V
supply current
operating mode; VDD = 6 V;
−
40
100
µA
no load; VI = VDD or VSS
;
fSCL = 100 kHz
Istb
standby current
standby mode; VDD = 6 V;
no load; VI = VDD or VSS
−
−
2.5
1.3
10
µA
VPOR
Power-on reset voltage
VDD = 6 V; no load;
2.4
V
VI = VDD or VSS; note 1
Input SCL; input/output SDA
VIL
VIH
IOL
IL
LOW level input voltage
−0.5
−
−
−
−
−
+0.3VDD
V
HIGH level input voltage
LOW level output current
leakage current
0.7VDD
VDD + 0.5
V
VOL = 0.4 V
VI = VDD or VSS
VI = VSS
3
−
mA
µA
pF
−1
−
+1
7
Ci
input capacitance
1997 Apr 02
13
NXP [ NXP ]
