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SN74ALS257ADR - Texas Instruments

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

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SN74ALS257ADR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G16)
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SN74ALS257ADR - Texas Instruments  - 3D model - Small Outline Packages - D (R-PDSO-G16)
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SN74ALS257ADR Details

  • Manufacturer Part Number:

    SN74ALS257ADR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Family:

    ALS

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.9 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    MULTIPLEXER

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • 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:

    SOP

  • Package Equivalence Code:

    SOP16,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • 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:

    1.75 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 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:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

SN74ALS257ADR Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74ALS257ADR is 100 MHz, but it can vary depending on the specific application and operating conditions.
  • To ensure signal integrity, use proper PCB layout techniques, such as impedance matching, signal routing, and decoupling capacitors. Additionally, consider using series termination resistors and/or parallel termination resistors to reduce signal reflections.
  • The recommended power-on sequence is to apply VCC first, followed by VEE, and then the input signals. This helps prevent latch-up and ensures proper device operation.
  • Yes, the SN74ALS257ADR can operate in a 3.3V system, but the output voltage will be limited to 3.3V. Additionally, the input voltage threshold may be affected, and the device may not meet the specified propagation delay and rise/fall times.
  • To handle thermal issues, ensure good thermal conduction between the device and the PCB, use a heat sink if necessary, and avoid operating the device at maximum power dissipation for extended periods. Monitor the device temperature and adjust the operating conditions accordingly.

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SN74ALS257ADR 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 SN74ALS257AD Texas Instruments

Multiplexer, ALS Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16

Part Image DM74ALS257M Fairchild Semiconductor Corporation

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Part Image DM74ALS257MX_NL Fairchild Semiconductor Corporation

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Part Image N74ALS257D-T NXP Semiconductors

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Part Image SN74ALS257DR Texas Instruments

Multiplexer, ALS Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16

For a full list of alternate parts for SN74ALS257ADR, check out Findchips.com