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74HC280; 74HCT280

9-bit odd/even parity generator/checker

The 74HC280; 74HCT280 is a 9-bit parity generator or checker. Both even and odd parity outputs are available. The even parity output (PE) is HIGH when an even number of data inputs (I0 to I8) is HIGH. The odd parity output (PO) is HIGH when an odd number of data inputs are HIGH. Expansion to larger word sizes is accomplished by tying the even outputs (PE) of up to nine parallel devices to the final stage data inputs. Inputs include clamp diodes. It enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Word-length easily expanded by cascading

  • Generates either odd or even parity for nine data bits

  • Wide supply voltage range from 2.0 to 6.0 V

  • Input levels:

    • For 74HC280: CMOS level

    • For 74HCT280: TTL level

  • 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: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Specified from -40 °C to +85 °C and -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
74HC280DProduction2.0 - 6.0CMOS± 5.217low-40~125731.030SO14
74HCT280DProduction4.5 - 5.5TTL± 418low-40~125761.034SO14
74HCT280PWProduction4.5 - 5.5TTL± 418low-40~125---TSSOP14

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC280D
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_653Active74HC280D74HC280D,653
( 9337 138 80653 )
74HCT280D
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_653Active74HCT280D74HCT280D,653
( 9337 138 90653 )
74HCT280PW
TSSOP14
(SOT402-1)
SOT402-1SSOP-TSSOP-VSO-WAVE
SOT402-1_118Active4HCT28074HCT280PWJ
( 9356 911 88118 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC280D9337138806522021-12-312022-06-3074HC280D
    74HCT280D9337138906522021-12-312022-06-3074HCT280D

      Environmental information

      Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
      74HC280D74HC280D,65374HC280Dweek 5, 2004
      74HCT280D74HCT280D,65374HCT280Dweek 5, 2004
      74HCT280PW74HCT280PWJ74HCT280PW
      Quality and reliability disclaimer

      Documentation (9)

      File nameTitleTypeDate
      74HC_HCT2809-bit odd/even parity generator/checkerData sheet2024-01-15
      AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
      HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
      SOT402-1plastic, thin shrink small outline package; 14 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-07
      SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
      SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
      SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
      WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
      SOT108-1plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07

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