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DS8921ATM - Texas Instruments

Description: RS-422 Interface IC Obsolete, LTB expires Aug-07-2018

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DS8921ATM - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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DS8921ATM - Texas Instruments  - 3D model - Small Outline Packages - D0008A
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DS8921ATM Details

  • Manufacturer Part Number:

    DS8921ATM

  • Brand Name:

    Texas Instruments

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOIC-8

  • Pin Count:

    8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Differential Output:

    YES

  • Driver Number of Bits:

    1

  • High Level Input Current-Max:

    0.00002 A

  • Input Characteristics:

    DIFFERENTIAL SCHMITT TRIGGER

  • Interface IC Type:

    LINE TRANSCEIVER

  • Interface Standard:

    EIA-422

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e0

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Out Swing-Min:

    2.5 V

  • Output Low Current-Max:

    0.008 A

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    235

  • Qualification Status:

    Not Qualified

  • Receive Delay-Max:

    20 ns

  • Receiver Number of Bits:

    1

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    35 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    4.5 V

  • Supply Voltage-Nom:

    5 V

  • Supply Voltage1-Max:

    5.5 V

  • Supply Voltage1-Min:

    4.5 V

  • Supply Voltage1-Nom:

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    20

  • Transmit Delay-Max:

    15 ns

  • Width:

    3.9 mm

DS8921ATM Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to route the clock and data lines as differential pairs, keeping them away from noisy signals and power planes.
  • Use a thermal management strategy, such as heat sinks or thermal interfaces, to keep the junction temperature below 125°C. Also, ensure the device is properly soldered and the PCB is designed for thermal expansion.
  • Use a low-ESR capacitor (e.g., 10uF) close to the device's power pins, and add a 1uF capacitor in parallel to filter high-frequency noise. Ensure the power supply has a low ripple and noise, and consider adding a ferrite bead or inductor for additional filtering.
  • Use a high-quality, low-loss transmission line (e.g., 50Ω microstrip) for the data lines, and ensure the signal integrity by minimizing reflections, crosstalk, and electromagnetic interference (EMI).
  • Consult the datasheet and application notes for specific register settings. Typically, the default settings are suitable for most applications, but adjustments may be needed for custom configurations or specific use cases.

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DS8921ATM 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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