pca8574 NXP Semiconductors, pca8574 Datasheet - Page 14

• Manufacturer Part Number: pca8574
• Description: Pca8574/pca8574a Remote 8-bit I/o Expander For I2c-bus With Interrupt
• Manufacturer: NXP Semiconductors

NXP Semiconductors
12. Static characteristics
Table 7.
V
[1]
[2]
[3]
PCA8574_PCA8574A_2
Product data sheet
Symbol
Supplies
V
I
I
V
Input SCL; input/output SDA
V
V
I
I
C
I/Os; P0 to P7
I
I
I
I
C
C
Interrupt INT (see
I
C
Inputs AD0, AD1, AD2
V
V
I
C
DD
stb
OL
L
OL
OL(tot)
OH
trt(pu)
OL
LI
DD
DD
POR
IL
IH
IL
IH
i
i
o
o
i
= 2.3 V to 5.5 V; V
The power-on reset circuit resets the I
Each bit must be limited to a maximum of 25 mA and the total package limited to 200 mA due to internal busing limits.
The value is not tested, but verified on sampling basis.
Parameter
supply voltage
supply current
standby current
power-on reset voltage
LOW-level input voltage
HIGH-level input voltage
LOW-level output current
leakage current
input capacitance
LOW-level output current
total LOW-level output current
HIGH-level output current
transient boosted pull-up current V
input capacitance
output capacitance
LOW-level output current
output capacitance
LOW-level input voltage
HIGH-level input voltage
input leakage current
input capacitance
Static characteristics
Figure 8
SS
= 0 V; T
and
amb
Figure
= 40 C to +85 C; unless otherwise specified.
2
C-bus logic with V
9)
Conditions
Operating mode; no load;
V
AD0, AD1, AD2 = static H or L
Standby mode; no load;
V
V
V
V
V
V
V
V
V
V
V
V
I
I
OL
OL
OL
I
I
OL
OL
OL
OL
OH
OH
OL
= V
= V
= V
= V
= 0.4 V; V
= 0.4 V; V
= 0.4 V; V
= 0.5 V; V
= 0.5 V; V
= 0.5 V; V
= 0.5 V; V
= 0.4 V
= V
= V
Rev. 02 — 14 May 2007
DD
DD
DD
SS
SS
SS
or V
or V
or V
DD
; see
< V
SS
SS
SS
DD
DD
DD
DD
DD
DD
DD
POR
; f
; f
Figure 8
SCL
Remote 8-bit I/O expander for I
SCL
= 2.3 V
= 3.0 V
= 4.5 V
= 2.3 V
= 3.0 V
= 4.5 V
= 4.5 V
and sets all I/Os to logic 1 (with current source to V
= 400 kHz;
= 0 kHz
[1]
[2]
[2]
[2]
[2]
[3]
[3]
Min
2.3
-
-
-
0.7V
20
25
30
-
12
17
25
-
-
-
3.0
-
0.7V
-
0.5
1
30
0.5
0.5
1
DD
DD
PCA8574/74A
Typ
-
200
4.5
1.8
-
-
35
44
57
-
5
26
33
40
-
2.1
2.1
-
3
-
-
-
3.5
138
1.0
2
C-bus with interrupt
© NXP B.V. 2007. All rights reserved.
Max
5.5
500
10
2.0
+0.3V
5.5
-
-
-
+1
10
-
-
-
200
-
10
10
-
5
+0.3V
5.5
+1
5
300
DD
DD
DD
).
14 of 27
Unit
V
V
V
V
mA
mA
mA
pF
mA
mA
mA
mA
mA
pF
pF
mA
pF
V
V
pF
A
A
A
A
A