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SN74ALS257AN - Texas Instruments

Description: Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

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SN74ALS257AN - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N (R-PDIP-T16)
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SN74ALS257AN - Texas Instruments  - 3D model - Dual-In-Line Packages - N (R-PDIP-T16)
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SN74ALS257AN Details

  • Manufacturer Part Number:

    SN74ALS257AN

  • 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

  • Family:

    ALS

  • JESD-30 Code:

    R-PDIP-T16

  • JESD-609 Code:

    e4

  • Length:

    19.305 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    MULTIPLEXER

  • Max I(ol):

    0.024 A

  • Number of Bits:

    2

  • Number of Functions:

    4

  • Number of Inputs:

    2

  • Number of Outputs:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    TRUE

  • 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):

    12 mA

  • Prop. Delay@Nom-Sup:

    12 ns

  • Propagation Delay (tpd):

    12 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

SN74ALS257AN Frequently Asked Questions (FAQs)

  • The maximum frequency of operation for the SN74ALS257AN is typically around 100 MHz, but it can vary depending on the specific application and operating conditions.
  • To ensure proper operation, the SN74ALS257AN should be powered with a stable voltage source between 4.5V and 5.5V, and decoupled with a 0.1uF ceramic capacitor between VCC and GND, as close to the device as possible.
  • The SN74ALS257AN can sink up to 24mA and source up to 12mA per output, but it's recommended to limit the current to 6mA per output to ensure reliable operation.
  • When not in use, the enable inputs (E1 and E2) should be tied to a logic high (VCC) to ensure that the device is enabled and functioning properly.
  • Yes, the SN74ALS257AN can be used as a demultiplexer by connecting the output (Y) to the input of a subsequent stage, and using the select inputs (S0 and S1) to control the routing of the signal.

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SN74ALS257AN 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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Part Image SN74ALS257ANE4 Texas Instruments

Multiplexer, ALS Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDIP16