PCA9554PW/Q900 查看數據表（PDF） - NXP Semiconductors.
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PCA9554PW/Q900 Datasheet PDF : 35 Pages
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NXP Semiconductors
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt
7. Application design-in information
VDD (5 V)
VDD
MASTER
CONTROLLER
SCL
SDA
INT
VSS
10 kΩ
10 kΩ
10 kΩ
10 kΩ
2 kΩ
VDD
PCA9554
SCL
IO0
SDA
IO1
IO2
INT
IO3
IO4
IO5
IO6
IO7
A2
A1
A0
VSS
Device address configured as 0100 100X for this example.
IO0, IO1, IO2 configured as outputs.
IO3, IO4, IO5 configured as inputs.
IO6 and IO7 are not used and must be configured as outputs.
Fig 15. Typical application
SUBSYSTEM 1
(e.g., temp. sensor)
INT
RESET
SUBSYSTEM 2
(e.g., counter)
A
enable
controlled switch
(e.g., CBT device)
B
ALARM
SUBSYSTEM 3
(e.g., alarm system)
VDD
002aac496
8. Limiting values
Table 9. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
Conditions
Min
VDD
supply voltage
0.5
II
input current
VI/O
voltage on an input/output pin
-
VSS 0.5
IO(IOn)
output current on pin IOn
-
IDD
supply current
-
ISS
ground supply current
-
Ptot
total power dissipation
-
Tstg
storage temperature
65
Tamb
ambient temperature
operating
40
Max
+6.0
20
5.5
50
85
100
200
+150
+85
Unit
V
mA
V
mA
mA
mA
mW
C
C
PCA9554_9554A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 8 November 2017
© NXP Semiconductors N.V. 2017. All rights reserved.
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