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74HC237

3-to-8 line decoder, demultiplexer with address latches

The 74HC237 is a 3-to-8 line decoder, demultiplexer with latches at the three address inputs (An). The 74HC237 essentially combines the 3-to-8 decoder function with a 3-bit storage latch. When the latch is enabled (LE = LOW), the 74HC237 acts as a 3-to-8 active LOW decoder. When the latch enable (LE) goes from LOW-to-HIGH, the last data present at the inputs before this transition, is stored in the latches. Further address changes are ignored as long as LE remains HIGH. The output enable input (E1 and E2) controls the state of the outputs independent of the address inputs or latch operation. All outputs are HIGH unless E1 is LOW and E2 is HIGH. The 74HC237 is ideally suited for implementing non-overlapping decoders in 3-state systems and strobes (stored address) applications in bus-oriented systems.

Features and benefits

  • Combines 3-to-8 decoder with 3-bit latch
  • Multiple input enable for easy expansion or independent controls
  • Active HIGH mutually exclusive outputs
  • Wide supply voltage range from 2.0 V to 6.0 V
  • CMOS low power dissipation
  • High noise immunity
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • Complies with JEDEC standards:
    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

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
74HC237DProduction2.0 - 6.0CMOS± 5.218low-40~125711.029SO16
74HC237DB
NRND
Not for design in---------SSOP16
74HC237PWProduction---------TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC237D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC237D74HC237D,653
( 9337 571 90653 )
74HC237DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC23774HC237DB,118
( 9351 898 20118 )
Bulk PackActiveHC23774HC237DB,112
( 9351 898 20112 )
74HC237PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1Active74HC23774HC237PWJ
( 9356 912 24118 )

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))
74HC237D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HC237D74HC237D,652
( 9337 571 90652 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC237D9337571906522021-12-312022-06-3074HC237D

    Quality, reliability & chemical content

    Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
    74HC237D74HC237D,65374HC237Dweek 6, 200439.31.37.69E811
    74HC237DB
    NRND
    74HC237DB,11874HC237DBweek 12, 200511
    74HC237DB
    NRND
    74HC237DB,11274HC237DBweek 12, 200511
    74HC237PW74HC237PWJ74HC237PW11

    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
    74HC237D74HC237D,65274HC237Dweek 6, 200439.31.37.69E811
    Quality and reliability disclaimer

    Documentation (14)

    File nameTitleTypeDate
    74HC2373-to-8 line decoder, demultiplexer with address latchesData sheet2021-11-02
    AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
    Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
    Nexperia_Selection_guide_2021Nexperia Selection Guide 2021Selection guide2021-01-08
    HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
    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
    SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
    SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
    SOT338-1plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyPackage information2020-04-21

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