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SN74LS21NSR - Texas Instruments

Description: Dual 4-input positive-AND gates

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SN74LS21NSR - Texas Instruments - PCB symbol
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SN74LS21NSR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - NS
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SN74LS21NSR - Texas Instruments - 3D model - Small Outline Packages - NS
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SN74LS21NSR Details

  • Manufacturer Part Number:

    SN74LS21NSR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    SOP-14

  • Pin Count:

    14

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Family:

    LS

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e4

  • Length:

    10.2 mm

  • Load Capacitance (CL):

    15 pF

  • Logic IC Type:

    AND GATE

  • Max I(ol):

    0.008 A

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    2

  • Number of Inputs:

    4

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    TOTEM-POLE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP14,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    4.4 mA

  • Prop. Delay@Nom-Sup:

    20 ns

  • Propagation Delay (tpd):

    20 ns

  • Qualification Status:

    Not Qualified

  • Schmitt Trigger:

    NO

  • 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:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    5.3 mm

SN74LS21NSR Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the SN74LS21NSR is 4.75V to 5.25V, as specified in the datasheet. However, it's recommended to operate the device within the range of 5V ± 10% for optimal performance.
  • During power-up and power-down sequences, it's recommended to ensure that all input pins are at a valid logic level (either high or low) to prevent unwanted output states. Additionally, it's recommended to use a pull-up or pull-down resistor on the output pins to prevent them from floating.
  • The maximum frequency of operation for the SN74LS21NSR is typically around 25 MHz, but this can vary depending on the specific application and operating conditions. It's recommended to consult the datasheet and perform simulations or testing to determine the maximum frequency of operation for a specific design.
  • To ensure proper decoupling, it's recommended to use a 0.1 μF ceramic capacitor between the VCC pin and GND pin, as close to the device as possible. This helps to filter out noise and voltage spikes on the power supply lines.
  • The maximum current that the SN74LS21NSR can sink or source is typically around 16 mA per output pin, but this can vary depending on the specific application and operating conditions. It's recommended to consult the datasheet and perform simulations or testing to determine the maximum current handling capability for a specific design.

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SN74LS21NSR 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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