PCA9641PW118
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NXP USA Inc. PCA9641PW118

Manufacturer No:
PCA9641PW118
Manufacturer:
NXP USA Inc.
Package:
Bulk
Description:
2-CHANNEL I2C-BUS MASTER ARBITER
Delivery:
Payment:
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Product Introduction

Overview

The PCA9641PW118, produced by NXP USA Inc., is a 2-to-1 I²C-bus master demultiplexer with an arbiter function. This component is designed for high reliability in dual master I²C-bus applications, ensuring correct system operation even when two I²C-bus masters issue commands simultaneously. The PCA9641PW118 is particularly useful in systems that require robust and reliable I²C communication, such as in automotive, industrial, and consumer electronics.

Key Specifications

ParameterValue
Package TypeTSSOP16, HVQFN16
Operating Power Supply Voltage2.3 V to 3.6 V
I/O Pin Tolerance3.6 V
Clock FrequencyUp to 1 MHz
ESD ProtectionExceeds 6000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
Latch-up TestingExceeds 100 mA per JEDEC Standard JESD78
Address DecodingUp to 112 addresses
Reset InputActive LOW reset input
Temperature Range-40°C to +85°C

Key Features

  • 2-to-1 bidirectional master selector
  • Channel selection via I²C-bus
  • I²C-bus interface logic compatible with SMBus standards
  • Arbiter function to manage multiple masters
  • Queueing of requests for downstream bus access
  • Software reset capability
  • Interrupt outputs to indicate master control status
  • No internal pull-up resistors; external pull-up resistors required

Applications

  • High reliability systems with dual masters
  • Gatekeeper multiplexer on long single bus
  • Bus initialization/recovery for slave devices without hardware reset
  • Systems where masters without arbitration logic need to share resources

Q & A

  1. What is the PCA9641PW118 used for?
    The PCA9641PW118 is used as a 2-to-1 I²C-bus master demultiplexer with an arbiter function, ensuring reliable operation in dual master I²C-bus applications.
  2. What are the package options for the PCA9641PW118?
    The PCA9641PW118 is available in TSSOP16 and HVQFN16 packages.
  3. What is the operating voltage range of the PCA9641PW118?
    The operating voltage range is from 2.3 V to 3.6 V.
  4. What is the maximum clock frequency supported by the PCA9641PW118?
    The maximum clock frequency is up to 1 MHz.
  5. Does the PCA9641PW118 have built-in pull-up resistors?
    No, the PCA9641PW118 does not have built-in pull-up resistors; external pull-up resistors are required.
  6. How does the arbiter function work in the PCA9641PW118?
    The arbiter function selects one master to control the I²C-bus while the other master waits, ensuring no conflicts or lock-ups.
  7. What is the temperature range for the PCA9641PW118?
    The temperature range is from -40°C to +85°C.
  8. Can the PCA9641PW118 handle multiple transactions on the downstream bus?
    Yes, the PCA9641PW118 allows for queued requests and reserves time for multiple transactions on the downstream bus.
  9. How does the PCA9641PW118 handle ESD protection?
    The PCA9641PW118 exceeds 6000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 for ESD protection.
  10. What kind of reset options are available for the PCA9641PW118?
    The PCA9641PW118 has an active LOW reset input and supports software reset.

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