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74AHC138-Q100; 74AHCT138-Q100

3-to-8 line decoder/demultiplexer; inverting

The 74AHC138-Q100; 74AHCT138-Q100 are high-speed Si-gate CMOS devices and are pin compatible with Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard No. 7A.

The 74AHC138-Q100; 74AHCT138-Q100 is a 3-to-8 line decoder/demultiplexer. It accepts three binary weighted address inputs (A0, A1 and A2) and, when enabled, provides eight mutually exclusive outputs (Y0 to Y7) that are LOW when selected.

There are three enable inputs: two active LOW (E1 and E2) and one active HIGH (E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH.

This multiple enable function allows easy parallel expansion of the device to a 1-of-32 (5 lines to 32 lines) decoder with just four 74AHC138-Q100; 74AHCT138-Q100 devices and one inverter. The 74AHC138-Q100; 74AHCT138-Q100 can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Unused enable inputs must be permanently tied to their appropriate active HIGH or LOW state.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Balanced propagation delays
  • All inputs have Schmitt-trigger action
  • Demultiplexing capability
  • Multiple input enable for easy expansion
  • Ideal for memory chip select decoding
  • Inputs accepts voltages higher than VCC
  • For 74AHC138-Q100 only: operates with CMOS input levels
  • For 74AHCT138-Q100 only: operates with TTL input levels
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)
  • Multiple package options
  • DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHC138BQ-Q100Production2.0 - 5.5CMOS± 84.4low-40~1259313.862DHVQFN16
74AHC138D-Q100Production2.0 - 5.5CMOS± 84.4low-40~125939.752SO16
74AHC138PW-Q100Production2.0 - 5.5CMOS± 84.4low-40~1251254.654.7TSSOP16
74AHCT138BQ-Q100Production4.5 - 5.5TTL± 84.4low-40~1259313.862DHVQFN16
74AHCT138D-Q100Production4.5 - 5.5TTL± 84.4low-40~125939.752SO16
74AHCT138PW-Q100Production4.5 - 5.5TTL± 84.4low-40~1251254.654.7TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74AHC138BQ-Q100
DHVQFN16
(SOT763-1)
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveAHC13874AHC138BQ-Q100X
( 9353 001 81115 )
74AHC138D-Q100
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Active74AHC138D74AHC138D-Q100J
( 9353 001 82118 )
74AHC138PW-Q100
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveAHC13874AHC138PW-Q100J
( 9353 001 83118 )
74AHCT138BQ-Q100
DHVQFN16
(SOT763-1)
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveAHT13874AHCT138BQ-Q100X
( 9353 001 98115 )
74AHCT138D-Q100
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Active74AHCT138D74AHCT138D-Q100J
( 9353 001 99118 )
74AHCT138PW-Q100
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveAHCT13874AHCT138PW-Q100J
( 9353 002 01118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74AHC138PW-Q100/AU
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1Withdrawn / End-of-lifeAHC13874AHC138PW-Q100/AJ
( 9356 906 55118 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74AHC138PW-Q100/AU9356906551182018-12-312019-06-3074AHC138PW-Q100

    Quality, reliability & chemical content

    Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
    74AHC138BQ-Q10074AHC138BQ-Q100X74AHC138BQ-Q100Always Pb-free29.90.91.11E911
    74AHC138D-Q10074AHC138D-Q100J74AHC138D-Q100Always Pb-free29.90.91.11E911
    74AHC138PW-Q10074AHC138PW-Q100J74AHC138PW-Q100Always Pb-free29.90.91.11E911
    74AHCT138BQ-Q10074AHCT138BQ-Q100X74AHCT138BQ-Q100Always Pb-free29.90.91.11E911
    74AHCT138D-Q10074AHCT138D-Q100J74AHCT138D-Q100Always Pb-free29.90.91.11E911
    74AHCT138PW-Q10074AHCT138PW-Q100J74AHCT138PW-Q100Always Pb-free29.90.91.11E911

    The variants in the table below are discontinued. See the table Discontinuation information for more information.

    Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
    74AHC138PW-Q100/AU74AHC138PW-Q100/AJNot available
    You can request this via a support request
    week 25, 201929.90.91.11E911
    Quality and reliability disclaimer

    Documentation (10)

    File nameTitleTypeDate
    74AHC_AHCT138_Q1003-to-8 line decoder/demultiplexer; invertingData sheet2020-09-10
    ahc138ahc138 IBIS modelIBIS model2013-04-07
    ahct138ahct138 IBIS modelIBIS model2013-04-07
    SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm bodyPackage information2020-04-21
    SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
    SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
    SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
    WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
    SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
    SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21

    Support

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    Models

    File nameTitleTypeDate
    ahc138ahc138 IBIS modelIBIS model2013-04-07
    ahct138ahct138 IBIS modelIBIS model2013-04-07

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