Datasheet
PCA8574_PCA8574A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 3 — 3 June 2013 16 of 32
NXP Semiconductors
PCA8574; PCA8574A
Remote 8-bit I/O expander for I
2
C-bus with interrupt
13. Static characteristics
[1] The power-on reset circuit resets the I
2
C-bus logic with V
DD
<V
POR
and sets all I/Os to logic 1 (with current source to V
DD
).
[2] Each bit must be limited to a maximum of 25 mA and the total package limited to 200 mA due to internal busing limits.
[3] The value is not tested, but verified on sampling basis.
Table 9. Static characteristics
V
DD
= 2.3 V to 5.5 V; V
SS
=0V; T
amb
=
40
Cto+85
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Supplies
V
DD
supply voltage 2.3 - 5.5 V
I
DD
supply current Operating mode; no load;
V
I
=V
DD
or V
SS
; f
SCL
= 400 kHz;
A0, A1, A2 = static H or L
- 200 500 A
I
stb
standby current Standby mode; no load;
V
I
=V
DD
or V
SS
; f
SCL
= 0 kHz
-4.510A
V
POR
power-on reset voltage
[1]
-1.82.0V
Input SCL; input/output SDA
V
IL
LOW-level input voltage 0.5 - +0.3V
DD
V
V
IH
HIGH-level input voltage 0.7V
DD
-5.5V
I
OL
LOW-level output current V
OL
=0.4V; V
DD
=2.3V 20 35 - mA
V
OL
=0.4V; V
DD
=3.0V 25 44 - mA
V
OL
=0.4V; V
DD
=4.5V 30 57 - mA
I
L
leakage current V
I
=V
DD
or V
SS
1- +1 A
C
i
input capacitance V
I
=V
SS
- 5 10 pF
I/Os; P0 to P7
V
IL
LOW-level input voltage 0.5 - +0.3V
DD
V
V
IH
HIGH-level input voltage 0.7V
DD
-5.5V
I
OL
LOW-level output current V
OL
=0.5V; V
DD
=2.3V
[2]
12 26 - mA
V
OL
=0.5V; V
DD
=3.0V
[2]
17 33 - mA
V
OL
=0.5V; V
DD
=4.5V
[2]
25 40 - mA
I
OL(tot)
total LOW-level output current V
OL
=0.5V; V
DD
=4.5V
[2]
--200mA
I
OH
HIGH-level output current V
OH
=V
SS
30 138 300 A
I
trt(pu)
transient boosted pull-up current V
OH
=V
SS
; see Figure 8 0.5 1.0 - mA
C
i
input capacitance
[3]
- 2.1 10 pF
C
o
output capacitance
[3]
- 2.1 10 pF
Interrupt INT
(see Figure 8 and Figure 9)
I
OL
LOW-level output current V
OL
=0.4V 3.0 - - mA
C
o
output capacitance - 3 5 pF
Inputs A0, A1, A2
V
IL
LOW-level input voltage 0.5 - +0.3V
DD
V
V
IH
HIGH-level input voltage 0.7V
DD
-5.5V
I
LI
input leakage current 1- +1 A
C
i
input capacitance - 3.5 5 pF