PCA9538APWJ NXP Semiconductors, PCA9538APWJ Datasheet - Page 11

• Manufacturer Part Number: PCA9538APWJ
• Description: Interface - I/O Expanders 8bit I2C IO Port
• Manufacturer: NXP Semiconductors

Specifications of PCA9538APWJ

• Rohs: yes
• Maximum Operating Frequency: 100 kHz
• Operating Supply Voltage: 1.65 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-16
• Operating Current: 160 mA
• Output Current: 25 mA
• Power Dissipation: 200 mW
• Product Type: I/O Expanders

NXP Semiconductors
8. Application design-in information
PCA9538A
Product data sheet
Fig 11. Typical application
(3.3 V)
(1) Resistors are required for inputs (on P port) that may float. If a driver to an input will never let the input float, a resistor is not
V
DD
Device address is 1110 000x for this example.
P0, P2, P3 configured as outputs.
P1, P4, P5 configured as inputs.
P6, P7 are not used and need 100 k pull-up resistors to protect them from floating or the internal pull-up or pull-down
selected.
needed. Outputs (in the P port) do not need pull-up resistors.
CONTROLLER
MASTER
V
V
DD
SS
RESET
SDA
SCL
INT
10 kΩ
10 kΩ
All information provided in this document is subject to legal disclaimers.
10 kΩ
Rev. 1 — 28 September 2012
10 kΩ
Low-voltage 8-bit I
SCL
SDA
INT
RESET
A1
A0
PCA9538A
V
V
DD
SS
P0
P1
P2
P3
P4
P5
P6
P7
2 kΩ
2
C-bus I/O port with interrupt and reset
100 kΩ
(× 3) (1)
enable
INT
RESET
(e.g., alarm system)
ALARM
(e.g., temp sensor)
A
B
PCA9538A
SUB-SYSTEM 1
SUB-SYSTEM 2
SUB-SYSTEM 3
(e.g., counter)
© NXP B.V. 2012. All rights reserved.
controlled
switch
(e.g., CBT device)
002aah420
V
DD
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