PCA9509DP,118
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NXP USA Inc. PCA9509DP,118

Manufacturer No:
PCA9509DP,118
Manufacturer:
NXP USA Inc.
Package:
Tape & Reel (TR)
Description:
IC REDRIVER I2C 2CH 8TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The PCA9509DP,118 is a level-translating I2C-bus/SMBus repeater developed by NXP Semiconductors. This device is designed to facilitate communication between I2C circuits operating at different voltage levels, making it particularly useful in mixed-voltage environments. It enables low-voltage microcontrollers to interface with standard 5V I2C peripherals and supports extended I2C bus lengths and higher capacitance.

Key Specifications

Attribute Specification
Interface Type I2C/SMBus
No of Channels 2
Clock Frequency - Max 400 kHz
Supply Voltage - Nom 3 V to 5.5 V
Supply Current 0.25 mA to 5 mA
Package Style TSSOP-8
Mounting Method Surface Mount
Operating Temperature -40°C to 85°C

Key Features

  • Bidirectional buffer isolates capacitance and allows 400 pF on port B of the device.
  • Voltage level translation from port A (1.0 V [as low as 0.95 V in special cases] to VCC(B) - 1.0 V) to port B (3.0 V to 5.5 V).
  • Requires no external pull-up resistors on lower voltage port A.
  • Active HIGH repeater enable input.
  • Open-drain inputs/outputs.
  • Lock-up free operation.
  • Supports arbitration and clock stretching across the repeater.
  • Accommodates Standard-mode and Fast-mode I2C-bus devices and multiple masters.
  • Powered-off high-impedance I2C-bus pins.

Applications

The PCA9509DP,118 is particularly useful in systems that require communication between I2C devices operating at different voltage levels. It is advantageous in scenarios such as:

  • Interfacing low-voltage microcontrollers with standard 5V I2C peripherals.
  • Extending I2C bus lengths and handling higher capacitance.
  • Mixed-voltage environments where communication between different voltage levels is essential.

Q & A

  1. What is the primary function of the PCA9509DP,118?

    The PCA9509DP,118 is a level-translating I2C-bus/SMBus repeater that enables communication between I2C circuits operating at different voltage levels.

  2. What are the voltage ranges supported by the PCA9509DP,118?

    The device supports a low-voltage side ranging from 1.0 V (as low as 0.95 V in special cases) to VCC(B) - 1.0 V and a high-voltage side ranging from 3.0 V to 5.5 V.

  3. What is the maximum clock frequency supported by the PCA9509DP,118?

    The maximum clock frequency supported is 400 kHz.

  4. Does the PCA9509DP,118 require external pull-up resistors?

    No, it does not require external pull-up resistors on the lower voltage port A due to its internal current source.

  5. What is the package style of the PCA9509DP,118?

    The package style is TSSOP-8.

  6. What is the operating temperature range of the PCA9509DP,118?

    The operating temperature range is -40°C to 85°C.

  7. How does the PCA9509DP,118 handle capacitance on the I2C bus?

    The device isolates capacitance and allows up to 400 pF on port B.

  8. Does the PCA9509DP,118 support multiple masters on the I2C bus?

    Yes, it supports Standard-mode and Fast-mode I2C-bus devices and multiple masters.

  9. What happens to the I2C-bus pins when the PCA9509DP,118 is unpowered?

    The I2C-bus pins are high-impedance when the device is unpowered.

  10. How should the PCA9509DP,118 be handled to prevent damage?

    The device requires careful handling and appropriate ESD protection measures during handling and installation to preserve its integrity and functionality.

Product Attributes

Type:Buffer, ReDriver
Applications:I²C
Input:2-Wire Bus
Output:2-Wire Bus
Data Rate (Max):400kHz
Number of Channels:2
Delay Time:- 
Signal Conditioning:- 
Capacitance - Input:2 pF
Voltage - Supply:3V ~ 5.5V
Current - Supply:3mA
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:8-TSSOP
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Similar Products

Part Number PCA9509DP,118 PCA9509PDP,118 PCA9507DP,118 PCA9508DP,118 PCA9509ADP,118 PCA9509D,118
Manufacturer NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc.
Product Status Active Active Active Active Obsolete Active
Type Buffer, ReDriver Buffer, ReDriver Buffer, Accelerator Buffer, ReDriver Buffer, ReDriver -
Applications I²C I²C HDMI, I²C I²C - Hotswap I²C -
Input 2-Wire Bus 2-Wire Bus 2-Wire Bus 2-Wire Bus 2-Wire Bus -
Output 2-Wire Bus 2-Wire Bus 2-Wire Bus 2-Wire Bus 2-Wire Bus -
Data Rate (Max) 400kHz 400kHz 400kHz 400kHz 400kHz -
Number of Channels 2 2 1 1 2 -
Delay Time - - - - - -
Signal Conditioning - - - - - -
Capacitance - Input 2 pF 2 pF 6 pF 5.2 pF 2 pF -
Voltage - Supply 3V ~ 5.5V 3V ~ 5.5V 2.7V ~ 5.5V 2.7V ~ 5.5V 2.3V ~ 5.5V -
Current - Supply 3mA 3mA 1mA 1mA 5µA -
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 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) -
Supplier Device Package 8-TSSOP 8-TSSOP 8-TSSOP 8-TSSOP 8-TSSOP -

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