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SN74LS156DR - Texas Instruments

Description: Dual 2-Line to 4-Line Decoders/Demultiplexers with Open-Collector Outputs

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SN74LS156DR - Texas Instruments - PCB symbol
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PCB Footprints
SN74LS156DR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G16)
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SN74LS156DR - Texas Instruments - 3D model - Small Outline Packages - D (R-PDSO-G16)
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SN74LS156DR Details

  • Manufacturer Part Number:

    SN74LS156DR

  • 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

  • Additional Feature:

    USABLE AS 1 TO 8 DEMULTIPLEXER

  • Family:

    LS

  • Input Conditioning:

    STANDARD

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.9 mm

  • Load Capacitance (CL):

    15 pF

  • Logic IC Type:

    2-LINE TO 4-LINE DECODER

  • Max I(ol):

    0.008 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    4

  • Number of Functions:

    2

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    OPEN-COLLECTOR

  • Output Polarity:

    INVERTED

  • 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):

    10 mA

  • Prop. Delay@Nom-Sup:

    27 ns

  • Propagation Delay (tpd):

    51 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 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:

    3.9 mm

SN74LS156DR Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74LS156DR is 35 MHz, but it can vary depending on the load capacitance and the output current.
  • To ensure reliable operation in high-temperature environments, it is recommended to operate the device within the recommended operating temperature range of 0°C to 70°C, and to follow proper thermal management practices such as providing adequate heat sinking and airflow.
  • The SN74LS156DR is a 5V device, but it can be used in a 3.3V system with some limitations. The device's input voltage threshold is typically around 2.5V, so it may not function correctly with 3.3V inputs. Additionally, the output voltage levels may not be compatible with 3.3V systems. It is recommended to use a level translator or a voltage regulator to ensure compatibility.
  • The SN74LS156DR does not have any specific power-up or power-down sequencing requirements. However, it is recommended to follow general power-up and power-down sequencing guidelines to ensure that the device is powered up and down in a controlled manner to prevent damage or malfunction.
  • The recommended layout and routing for the SN74LS156DR involves keeping the input and output traces short and direct, avoiding sharp corners and vias, and providing adequate decoupling capacitance to reduce noise and oscillations. It is also recommended to follow general PCB design guidelines for high-speed digital circuits.

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SN74LS156DR 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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SN74LS156DR Alternates

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Part Image SN74LS156DR2 Rochester Electronics LLC

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Part Image DM74LS156MX Rochester Electronics LLC

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Part Image SN74LS156D onsemi

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Part Image SN74LS156DR2 onsemi

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Part Image N74LS156D Signetics

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For a full list of alternate parts for SN74LS156DR, check out Findchips.com