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SN74ALS138AN - Texas Instruments

Description: Decoder/Demultiplexer 1 x 3:8 16-PDIP ,400µA, 8mA ,4.5V ~ 5.5V ,0°C ~ 70°C ,16-PDIP N

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SN74ALS138AN - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N (R-PDIP-T16)_2025-2
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SN74ALS138AN - Texas Instruments  - 3D model - Dual-In-Line Packages - N (R-PDIP-T16)_2025-2
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SN74ALS138AN Details

  • Manufacturer Part Number:

    SN74ALS138AN

  • 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:

    2 ACTIVE-LOW AND 1 ACTIVE-HIGH ENABLE INPUT, SCHOTTKY-CLAMPED FOR HIGH PERFORMANCE

  • Family:

    ALS

  • Input Conditioning:

    STANDARD

  • JESD-30 Code:

    R-PDIP-T16

  • JESD-609 Code:

    e4

  • Length:

    19.305 mm

  • Load Capacitance (CL):

    50 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 Characteristics:

    OPEN-COLLECTOR

  • 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:

    22 ns

  • Propagation Delay (tpd):

    22 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    TTL

  • 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

SN74ALS138AN Frequently Asked Questions (FAQs)

  • The maximum frequency of operation for the SN74ALS138AN is typically around 100 MHz, but it can vary depending on the specific application and operating conditions.
  • To ensure proper operation, the SN74ALS138AN 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 SN74ALS138AN can sink or source up to 24mA of current per output, but it's recommended to limit the current to 16mA or less to ensure reliable operation.
  • The enable inputs (E1, E2, E3) should be driven with a valid logic level (either high or low) to ensure proper operation. If an enable input is not used, it should be tied to a valid logic level to prevent unintended operation.
  • The propagation delay of the SN74ALS138AN is typically around 10-15ns, but it 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 SN74ALS138ANE4 Texas Instruments

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