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SN74LS138N - Texas Instruments

Description: 3-line to 8-line decoder / demultiplexer

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SN74LS138N - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - 16 pdip
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SN74LS138N - Texas Instruments  - 3D model - Dual-In-Line Packages - 16 pdip
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SN74LS138N Details

  • Manufacturer Part Number:

    SN74LS138N

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    16

  • Country Of Origin:

    Malaysia, Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    3 ENABLE INPUTS

  • Family:

    LS

  • Input Conditioning:

    STANDARD

  • JESD-30 Code:

    R-PDIP-T16

  • JESD-609 Code:

    e4

  • Length:

    19.305 mm

  • Load Capacitance (CL):

    15 pF

  • Logic IC Type:

    3-LINE TO 8-LINE DECODER

  • Max I(ol):

    0.008 A

  • Number of Bits:

    8

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    70 °C

  • Output Polarity:

    INVERTED

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP16,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    TUBE

  • Power Supply Current-Max (ICC):

    10 mA

  • Prop. Delay@Nom-Sup:

    41 ns

  • Propagation Delay (tpd):

    41 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    5.25 V

  • Supply Voltage-Min (Vsup):

    4.75 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

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

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

SN74LS138N Frequently Asked Questions (FAQs)

  • The maximum frequency of operation for the SN74LS138N is typically around 20-25 MHz, but this can vary depending on the specific application and operating conditions.
  • To ensure proper operation, the SN74LS138N should be powered with a stable 5V supply, and decoupling capacitors (e.g. 0.1uF and 10uF) should be placed close to the device to filter out noise and reduce electromagnetic interference (EMI).
  • The SN74LS138N can sink up to 24mA and source up to 12mA per output, but it's recommended to keep the current within the absolute maximum ratings to ensure reliable operation.
  • The enable inputs (E1, E2, E3) should be driven with a valid logic level (either high or low) to enable or disable the decoder outputs. Floating or undefined enable inputs can cause unpredictable behavior.
  • The propagation delay of the SN74LS138N is typically around 10-15ns, but this can vary depending on the specific application and operating conditions.

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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 SN74LS138NDS Motorola Semiconductor Products

LS Series, Inverted Output, TTL, PDIP16

Part Image SN74LS138JDS Motorola Semiconductor Products

3-LINE TO 8-LINE DECODER, LS Series, Inverted Output, TTL, CDIP16

Part Image N74LS138N Signetics

3-LINE TO 8-LINE DECODER, LS Series, Inverted Output, TTL, PDIP16

Part Image S54LS138F Signetics

3-LINE TO 8-LINE DECODER, LS Series, Inverted Output, TTL, CDIP16

Part Image DM54LS138J Fairchild Semiconductor Corporation

LS Series, Inverted Output, TTL, CDIP16

For a full list of alternate parts for SN74LS138N, check out Findchips.com