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SN74ALS521DW - Texas Instruments

Description: 8-Bit Identity/Magnitude Comparators (P=Q) with Enable

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SN74ALS521DW - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW0020A
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SN74ALS521DW - Texas Instruments  - 3D model - Small Outline Packages - DW0020A
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SN74ALS521DW Details

  • Manufacturer Part Number:

    SN74ALS521DW

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Additional Feature:

    WITH PULL-UP RESISTORS ON Q INPUTS; CASCADABLE

  • Family:

    ALS

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    IDENTITY COMPARATOR

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of Functions:

    8

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    INVERTED

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TUBE

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    19 mA

  • Prop. Delay@Nom-Sup:

    22 ns

  • Propagation Delay (tpd):

    20 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 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:

    7.5 mm

SN74ALS521DW Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74ALS521DW 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 using controlled impedance traces, minimizing trace lengths, and using termination resistors. Additionally, consider using a signal integrity analysis tool to simulate and optimize your design.
  • Yes, the SN74ALS521DW is compatible with 3.3V systems, but you need to ensure that the input voltage levels are within the recommended range (VCC - 0.5V to VCC + 0.5V) to maintain proper operation.
  • To avoid latch-up or other issues, ensure that the power supplies to each device are sequenced properly, with the VCC supply turning on before the input signals. You can use a power sequencing controller or a simple RC circuit to achieve this.
  • The recommended termination scheme for the SN74ALS521DW is a series terminator (Rs) of 33-50 ohms, followed by a parallel terminator (Rt) of 50-100 ohms, to match the impedance of the transmission line and minimize reflections.

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SN74ALS521DW 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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For a full list of alternate parts for SN74ALS521DW, check out Findchips.com