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74AC138SCX - onsemi

Description: ICC reduced by 50%; Active LOW mutually exclusive outputs; Demultiplexing capability; ACT138 has TTL-compatible inputs; Multiple input enable for easy expansion; Outputs source/sink 24 mA

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74AC138SCX - onsemi - PCB symbol
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PCB Footprints
74AC138SCX - onsemi PCB footprint - Small Outline Packages - Small Outline Packages - M16A (SOIC)
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74AC138SCX - onsemi - 3D model - Small Outline Packages - M16A (SOIC)
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74AC138SCX Details

  • Manufacturer Part Number:

    74AC138SCX

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC-16

  • Package Description:

    SOIC-16

  • Manufacturer Package Code:

    751BG

  • Country Of Origin:

    Mainland China, Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    onsemi

  • YTEOL:

    5

  • Additional Feature:

    3 ENABLE INPUTS

  • Family:

    AC

  • Input Conditioning:

    STANDARD

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e3

  • Length:

    9.9 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    3-LINE TO 8-LINE DECODER

  • Max I(ol):

    0.012 A

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • 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

  • Prop. Delay@Nom-Sup:

    15 ns

  • Propagation Delay (tpd):

    15 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Voltage-Max (Vsup):

    6 V

  • Supply Voltage-Min (Vsup):

    2 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

74AC138SCX Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the 74AC138SCX is typically 100 MHz, but it can vary depending on the specific application and operating conditions.
  • To ensure signal integrity, use proper PCB design techniques, such as using short signal traces, minimizing impedance mismatches, and using termination resistors as needed. Additionally, ensure that the power supply is clean and stable.
  • Yes, the 74AC138SCX is compatible with 3.3V systems. However, ensure that the input signals are within the recommended voltage range (VCC - 0.5V to VCC + 0.5V) to maintain proper operation.
  • To ensure proper operation, power up the 74AC138SCX in the following sequence: VCC, then input signals. Power down in the reverse sequence: input signals, then VCC.
  • The recommended termination scheme for the 74AC138SCX is to use a series terminator (e.g., 22 ohms) at the output of the device, and a parallel terminator (e.g., 50 ohms) at the input of the receiving device.

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74AC138SCX Overview

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74AC138SCX Alternates

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Image Part Number Model
Part Image MC74AC138D onsemi

AC Series, Inverted Output, CMOS, PDSO16
Part Image 74AC138SCT Fairchild Semiconductor Corporation

AC Series, Inverted Output, CMOS, PDSO16
Part Image 74AC138SCXR Fairchild Semiconductor Corporation

AC Series, Inverted Output, CMOS, PDSO16
Part Image 74AC138SCTR Fairchild Semiconductor Corporation

AC Series, Inverted Output, CMOS, PDSO16
Part Image MC74AC138D Rochester Electronics LLC

3-LINE TO 8-LINE DECODER, AC Series, Inverted Output, CMOS, PDSO16
For a full list of alternate parts for 74AC138SCX, check out Findchips.com