PCA8574A NXP [NXP Semiconductors], PCA8574A Datasheet - Page 3

• Manufacturer Part Number: PCA8574A
• Description: Remote 8-bit I/O expander for I2C-bus with interrupt
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
6. Pinning information
PCA8574_PCA8574A_2
Product data sheet
6.1 Pinning
Fig 2. Simplified schematic diagram of P0 to P7
Fig 3. Pin configuration for DIP16
data from Shift Register
data to Shift Register
AD0
AD1
AD2
V
P0
P1
P2
P3
power-on reset
SS
write pulse
read pulse
1
2
3
4
5
6
7
8
PCA8574AN
PCA8574N
002aac679
Rev. 02 — 14 May 2007
16
15
14
13
12
11
10
9
D
CI
V
SDA
SCL
INT
P7
P6
P5
P4
DD
FF
S
Remote 8-bit I/O expander for I
Q
D
CI
FF
S
Fig 4. Pin configuration for SO16
Q
I
trt(pu)
AD0
AD1
AD2
V
P0
P1
P2
P3
SS
100 A
1
2
3
4
5
6
7
8
PCA8574/74A
PCA8574AD
I
I
PCA8574D
OH
OL
002aac109
2
C-bus with interrupt
002aac678
© NXP B.V. 2007. All rights reserved.
V
P0 to P7
V
to interrupt logic
DD
SS
16
15
14
13
12
11
10
9
V
SDA
SCL
INT
P7
P6
P5
P4
DD
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