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UA9638CD - Texas Instruments

Description: Texas Instruments UA9638CD Dual EIA/TIA-422-B/ RS-422, Line Transmitter Differential 5 V, 8-Pin SOIC

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PCB Footprints
UA9638CD - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - 8-Pin SOIC-ren5
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UA9638CD - Texas Instruments  - 3D model - Small Outline Packages - 8-Pin SOIC-ren5
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UA9638CD Details

  • Manufacturer Part Number:

    UA9638CD

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOP-8

  • Pin Count:

    8

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Differential Output:

    YES

  • Driver Number of Bits:

    2

  • High Level Input Current-Max:

    0.000025 A

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    LINE DRIVER

  • Interface Standard:

    EIA-422-B; TIA-422-B

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    2

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Out Swing-Min:

    2 V

  • Output Characteristics:

    TOTEM-POLE

  • Output Low Current-Max:

    0.05 A

  • Output Polarity:

    COMPLEMENTARY

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    65 mA

  • Supply Voltage-Max:

    5.25 V

  • Supply Voltage-Min:

    4.75 V

  • Supply Voltage-Nom:

    5 V

  • Supply Voltage1-Max:

    5.25 V

  • Supply Voltage1-Min:

    4.75 V

  • Supply Voltage1-Nom:

    5 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Transmit Delay-Max:

    20 ns

  • Width:

    3.9 mm

UA9638CD Frequently Asked Questions (FAQs)

  • A good PCB layout for the UA9638CD involves keeping the input and output traces short and separate, using a solid ground plane, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
  • To ensure proper biasing, connect the VCC pin to a stable voltage source, and decouple it with a 0.1uF capacitor to ground. The VBIAS pin should be connected to a voltage divider network that sets the desired output voltage. The voltage divider should be designed to provide a stable voltage reference.
  • The UA9638CD requires a 50-ohm input termination to ensure maximum power transfer. A 50-ohm output termination is also recommended to prevent signal reflections. Use a 50-ohm resistor in series with the input and output pins to achieve this.
  • The UA9638CD can dissipate up to 2.5W of power. To manage thermal issues, ensure good airflow around the device, and consider using a heat sink or thermal pad to dissipate heat. Keep the device away from other heat sources and ensure the PCB is designed for good thermal conductivity.
  • The UA9638CD has internal ESD protection, but it's still important to follow proper ESD handling procedures during assembly and testing. Use an ESD wrist strap or mat, and ensure the PCB is properly grounded to prevent static discharge.

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UA9638CD 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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