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SN74LS540DBR - Texas Instruments

Description: Octal Buffers and Line Drivers with 3-State Outputs

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SN74LS540DBR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DB0020A
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SN74LS540DBR - Texas Instruments  - 3D model - Small Outline Packages - DB0020A
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SN74LS540DBR Details

  • Manufacturer Part Number:

    SN74LS540DBR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SSOP

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    WITH DUAL OUTPUT ENABLE

  • Control Type:

    ENABLE LOW

  • Count Direction:

    UNIDIRECTIONAL

  • Family:

    LS

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    7.2 mm

  • Load Capacitance (CL):

    45 pF

  • Logic IC Type:

    BUS DRIVER

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of Functions:

    8

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    INVERTED

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SSOP

  • Package Equivalence Code:

    SSOP20,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    52 mA

  • Prop. Delay@Nom-Sup:

    15 ns

  • Propagation Delay (tpd):

    15 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2 mm

  • Supply Voltage-Max (Vsup):

    5.25 V

  • Supply Voltage-Min (Vsup):

    4.75 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    TTL

  • Temperature Grade:

    COMMERCIAL

  • 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

SN74LS540DBR Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74LS540DBR is 35 MHz, but it can vary depending on the load capacitance and the output current.
  • The SN74LS540DBR has a maximum junction temperature of 150°C. To handle heat dissipation, ensure good airflow, use a heat sink if necessary, and follow proper PCB design and layout guidelines.
  • The SN74LS540DBR is a 5V device, but it can be used in a 3.3V system with some limitations. The output voltage will be lower, and the device may not meet the specified propagation delay and output current. Consult the datasheet and application notes for more information.
  • To ensure signal integrity, use proper PCB design and layout techniques, such as using short signal traces, minimizing impedance mismatch, and using termination resistors if necessary. Also, ensure that the power supply is clean and stable.
  • The SN74LS540DBR is a commercial-grade device, but Texas Instruments offers industrial-grade and automotive-grade versions of the device, such as the SN74LV540DBR and SN74LV540-Q1, respectively, which are suitable for high-reliability and high-temperature applications.

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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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Part Image SN74LS540DBRG4 Texas Instruments

Bus Driver, LS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO20