PCAL6408AHK
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NXP USA Inc. PCAL6408AHK

Manufacturer No:
PCAL6408AHK
Manufacturer:
NXP USA Inc.
Package:
Bulk
Description:
LOW-VOLTAGE TRANSLATING, 8-BIT I
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The PCAL6408AHK is a low-voltage translating, 8-bit I2C-bus/SMBus I/O expander produced by NXP USA Inc. This component is designed to provide remote I/O expansion for most microcontroller families via the I2C-bus interface. It is particularly useful in applications where additional I/Os are needed while minimizing interconnections, such as in battery-powered mobile devices, sensors, push buttons, and keypads.

Key Specifications

Product Attribute Attribute Value
Manufacturer NXP Semiconductors
Package Bulk
Base Product Number PCAL6
Operating Power Supply Voltage Range 1.65 V to 5.5 V
Voltage-Level Translation Bidirectional between 1.8 V, 2.5 V, 3.3 V, and 5 V
Standby Current Consumption 1 μA
Interface I2C-bus/SMBus
Interrupt Output Yes, with maskable interrupt and interrupt status register
Reset Yes, with power-on reset and external reset pin

Key Features

  • I2C-bus to parallel port expander
  • Operating power supply voltage range of 1.65 V to 5.5 V
  • Bidirectional voltage-level translation between different voltage levels (1.8 V, 2.5 V, 3.3 V, 5 V)
  • Low standby current consumption of 1 μA
  • Schmitt-trigger action for slow input transition and better switching noise immunity at SCL and SDA lines
  • Programmable output drive strength, latchable inputs, and programmable pull-up/pull-down resistors
  • Maskable interrupt, interrupt status register, and programmable open-drain or push-pull outputs
  • Polarity inversion register to save external logic gates

Applications

  • Battery-powered mobile devices
  • Sensors and sensor interfaces
  • Push buttons and keypads
  • Mixed signal environments requiring communication between incompatible I/O voltages
  • Any system needing additional I/O expansion with minimal interconnections

Q & A

  1. What is the primary function of the PCAL6408AHK?

    The PCAL6408AHK is an 8-bit general-purpose I/O expander that provides remote I/O expansion via the I2C-bus interface.

  2. What is the operating power supply voltage range of the PCAL6408AHK?

    The operating power supply voltage range is from 1.65 V to 5.5 V.

  3. Does the PCAL6408AHK support voltage-level translation?

    Yes, it supports bidirectional voltage-level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V.

  4. What is the standby current consumption of the PCAL6408AHK?

    The standby current consumption is 1 μA.

  5. Does the PCAL6408AHK have an interrupt output feature?

    Yes, it has an interrupt output feature with maskable interrupt and interrupt status register.

  6. How can the PCAL6408AHK be reset?

    The PCAL6408AHK can be reset using the power-on reset or the external reset pin.

  7. What are some of the programmable features of the PCAL6408AHK?

    The PCAL6408AHK has programmable output drive strength, latchable inputs, and programmable pull-up/pull-down resistors.

  8. Can the polarity of the input port be inverted on the PCAL6408AHK?

    Yes, the polarity of the input port can be inverted using the Polarity Inversion register.

  9. In what types of applications is the PCAL6408AHK commonly used?

    The PCAL6408AHK is commonly used in battery-powered mobile devices, sensor interfaces, push buttons, keypads, and mixed signal environments.

  10. What is the benefit of using the PCAL6408AHK in mixed signal environments?

    The PCAL6408AHK simplifies communication between incompatible I/O voltages, making it highly flexible in mixed signal environments.

Product Attributes

Number of I/O:- 
Interface:- 
Interrupt Output:- 
Features:- 
Output Type:- 
Current - Output Source/Sink:- 
Clock Frequency:- 
Voltage - Supply:- 
Operating Temperature:- 
Mounting Type:- 
Package / Case:- 
Supplier Device Package:- 
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