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DS89C21TM - Texas Instruments

Description: Single Transmitter/Receiver RS-422 8-Pin SOIC Tube

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DS89C21TM - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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DS89C21TM - Texas Instruments  - 3D model - Small Outline Packages - D0008A
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DS89C21TM Details

  • Manufacturer Part Number:

    DS89C21TM

  • 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:

    0.00001 A

  • Input Characteristics:

    SCHMITT TRIGGER

  • Interface IC Type:

    LINE TRANSCEIVER

  • Interface Standard:

    V.11; EIA-422-A; TIA-422-A

  • 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 V

  • Output Low Current-Max:

    0.006 A

  • 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:

    30 ns

  • Receiver Number of Bits:

    1

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    12 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    4.5 V

  • Supply Voltage-Nom:

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    20

  • Transmit Delay-Max:

    10 ns

  • Width:

    3.9 mm

DS89C21TM Frequently Asked Questions (FAQs)

  • The maximum clock frequency for the DS89C21TM is 33 MHz, but it can be overclocked up to 40 MHz with careful consideration of power supply and thermal management.
  • The DS89C21TM has a built-in watchdog timer that can be enabled by setting the WDT bit in the SYSCON register. The watchdog timer can be configured to reset the device after a specified timeout period if the timer is not periodically reset by software.
  • Yes, the DS89C21TM can operate with a 3.3V power supply, but it is recommended to use a 5V power supply for optimal performance and to ensure compatibility with all features and peripherals.
  • The UART on the DS89C21TM can be configured by setting the UART control registers (UCR1 and UCR2) to specify the baud rate, data bits, parity, and stop bits. The UART can also be configured to use internal or external clock sources.
  • Yes, the DS89C21TM can be used with an external crystal oscillator. The device has an internal oscillator circuit that can be connected to an external crystal to provide a stable clock source.

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DS89C21TM 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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