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PCA9557DB - Texas Instruments

Description: Texas Instruments PCA9557DB, 8-channel 8bit I/O Expander 400kHz, I2C, SMBus, 16-Pin SSOP

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PCA9557DB - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DB (R-PDSO-G)
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PCA9557DB - Texas Instruments  - 3D model - Small Outline Packages - DB (R-PDSO-G)
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PCA9557DB Details

  • Manufacturer Part Number:

    PCA9557DB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Address Bus Width:

    8

  • Clock Frequency-Max:

    0.4 MHz

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    6.2 mm

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of I/O Lines:

    8

  • Number of Ports:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SSOP

  • Package Equivalence Code:

    SSOP16,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2 mm

  • Supply Current-Max:

    0.025 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    2.3 V

  • Supply Voltage-Nom:

    2.5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    5.3 mm

  • uPs/uCs/Peripheral ICs Type:

    PARALLEL IO PORT, GENERAL PURPOSE

PCA9557DB Frequently Asked Questions (FAQs)

  • The PCA9557DB can support I2C bus frequencies up to 400 kHz.
  • Yes, the PCA9557DB can be used as a level shifter for I2C signals, allowing communication between devices operating at different voltage levels.
  • The reset pin (RST) of PCA9557DB should be tied to a logic high level (VCC) through a pull-up resistor to ensure proper operation. A low level on the RST pin resets the device.
  • The A0, A1, and A2 address pins on PCA9557DB are used to set the slave address of the device. By connecting these pins to VCC or GND, the device can be assigned one of eight possible slave addresses.
  • No, the PCA9557DB is not designed to control LEDs or other loads directly. It is a GPIO expander and should be used to control external switches or buffers that can handle the required current and voltage.

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PCA9557DB Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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