PCA9557PW,112
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NXP USA Inc. PCA9557PW,112

Manufacturer No:
PCA9557PW,112
Manufacturer:
NXP USA Inc.
Package:
Tube
Description:
IC I/O EXPANDER I2C 8B 16TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The PCA9557PW,112 is a silicon CMOS circuit designed by NXP USA Inc. to provide parallel input/output expansion for SMBus and I²C-bus applications. This device is part of NXP's extensive family of I²C-bus I/O expanders, enhancing the capabilities of microcontrollers by adding additional GPIO ports.

Key Specifications

Parameter Description
Number of I/O Bits 8 bits
Interface I²C-bus/SMBus
Operating Power-Supply Voltage 2.3 V to 5.5 V
I²C Bus Speed Up to 400 kHz
Addressing Three hardware address pins (A0, A1, A2) allowing up to eight devices on the same I²C/SMBus
Reset Active-low reset input, internal power-on reset
Package TSSOP (PW), SSOP (DB), VQFN (RGY), and others
Standby Current Consumption 1 μA max
I/O Port Configuration Configurable as inputs or outputs, polarity inversion capability

Key Features

  • Provides 8 bits of general-purpose parallel input/output expansion for I²C-bus/SMBus applications.
  • Operating power-supply voltage range of 2.3 V to 5.5 V.
  • 400 kHz fast I²C bus speed.
  • Three hardware address pins allowing up to eight devices on the same I²C/SMBus.
  • Active-low reset input and internal power-on reset.
  • High-impedance open-drain outputs with high-current drive capability for directly driving LEDs.
  • No glitch on power up and noise filter on SCL/SDA inputs.
  • Low standby current consumption of 1 μA max.
  • Configurable I/O ports with polarity inversion capability.

Applications

  • Microcontroller systems requiring additional GPIO ports.
  • Industrial control systems.
  • Automotive systems.
  • Consumer electronics.
  • Medical devices.
  • Any application requiring I²C-bus/SMBus interface expansion.

Q & A

  1. What is the PCA9557PW,112 used for?

    The PCA9557PW,112 is used to provide 8 bits of general-purpose parallel input/output expansion for I²C-bus/SMBus applications.

  2. What is the operating voltage range of the PCA9557PW,112?

    The operating voltage range is from 2.3 V to 5.5 V.

  3. How many devices can be connected on the same I²C/SMBus using the PCA9557PW,112?

    Up to eight devices can be connected using the three hardware address pins (A0, A1, A2).

  4. What is the maximum I²C bus speed supported by the PCA9557PW,112?

    The maximum I²C bus speed supported is 400 kHz.

  5. Does the PCA9557PW,112 have a reset feature?

    Yes, it has an active-low reset input and an internal power-on reset.

  6. Can the I/O ports of the PCA9557PW,112 be configured?

    Yes, the I/O ports can be configured as inputs or outputs with polarity inversion capability.

  7. What is the standby current consumption of the PCA9557PW,112?

    The standby current consumption is 1 μA max.

  8. Can the PCA9557PW,112 drive LEDs directly?

    Yes, the high-impedance open-drain outputs have high-current drive capability for directly driving LEDs.

  9. Are there any noise filters on the SCL/SDA inputs of the PCA9557PW,112?

    Yes, there are noise filters on the SCL/SDA inputs.

  10. What are some common applications of the PCA9557PW,112?

    Common applications include microcontroller systems, industrial control systems, automotive systems, consumer electronics, and medical devices.

Product Attributes

Number of I/O:8
Interface:I²C, SMBus
Interrupt Output:No
Features:POR
Output Type:Open Drain, Push-Pull
Current - Output Source/Sink:10mA, 25mA
Clock Frequency:400 kHz
Voltage - Supply:2.3V ~ 5.5V
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:16-TSSOP
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Similar Products

Part Number PCA9557PW,112 PCA9557PW,118 PCA9554PW,112 PCA9555PW,112 PCA9556PW,112
Manufacturer NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc.
Product Status Obsolete Active Active Active Obsolete
Number of I/O 8 8 8 16 8
Interface I²C, SMBus I²C, SMBus I²C, SMBus I²C, SMBus I²C, SMBus
Interrupt Output No No Yes Yes Yes
Features POR POR POR POR POR
Output Type Open Drain, Push-Pull Open Drain, Push-Pull Push-Pull Push-Pull Open Drain, Push-Pull
Current - Output Source/Sink 10mA, 25mA 10mA, 20mA 10mA, 25mA 10mA, 25mA 10mA, 20mA
Clock Frequency 400 kHz 400 kHz 400 kHz 400 kHz 100 kHz
Voltage - Supply 2.3V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 5.5V 2.3V ~ 5.5V 3V ~ 5.5V
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 16-TSSOP (0.173", 4.40mm Width) 16-TSSOP (0.173", 4.40mm Width) 16-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width) 16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 16-TSSOP 16-TSSOP 16-TSSOP 24-TSSOP 16-TSSOP

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