Datasheet

PCA9554_9554A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 9 — 19 March 2013 12 of 35
NXP Semiconductors
PCA9554; PCA9554A
8-bit I
2
C-bus and SMBus I/O port with interrupt
7. Application design-in information
8. Limiting values
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
PCA9554
IO0
IO1
SCL
SDA
V
DD
002aac496
SCL
SDA
IO2
IO3
V
DD
V
SS
MASTER
CONTROLLER
V
SS
V
DD
(5 V)
2 kΩ
SUBSYSTEM 1
(e.g., temp. sensor)
INT
SUBSYSTEM 2
(e.g., counter)
RESET
controlled switch
(e.g., CBT device)
A
B
enable
INTINT
10 kΩ 10 kΩ
SUBSYSTEM 3
(e.g., alarm system)
ALARM
IO4
IO5
V
DD
A2
A1
A0
IO6
IO7
10 kΩ10 kΩ
Table 9. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
V
DD
supply voltage 0.5 +6.0 V
I
I
input current - 20 mA
V
I/O
voltage on an input/output pin V
SS
 0.5 5.5 V
I
O(IOn)
output current on pin IOn - 50 mA
I
DD
supply current - 85 mA
I
SS
ground supply current - 100 mA
P
tot
total power dissipation - 200 mW
T
stg
storage temperature 65 +150 C
T
amb
ambient temperature operating 40 +85 C