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74HCT280D

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 number Product status VCC (V) Logic switching levels Output drive capability (mA) tpd (ns) Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Ψth(j-top) (K/W) Rth(j-c) (K/W) Package name
74HCT280D Production 4.5 - 5.5 TTL ± 4 18 low -40~125 76 1.0 34 SO14

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74HCT280D 74HCT280D,653
(933713890653)
Active 74HCT280D SOT108-1
SO14
(SOT108-1)
SOT108-1 SO-SOJ-REFLOW
SO-SOJ-WAVE
WAVE_BG-BD-1
Not available

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
74HCT280D 74HCT280D,653 74HCT280D rohs rhf rhf
Quality and reliability disclaimer

Documentation (11)

File name Title Type Date
74HC_HCT280 9-bit odd/even parity generator/checker Data sheet 2024-01-15
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
SOT108-1 3D model for products with SOT108-1 package Design support 2020-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SO14_SOT108-1_mk plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm body Marcom graphics 2017-01-28
SOT108-1 plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm body Package information 2023-11-07
74HCT280D_Nexperia_Product_Reliability 74HCT280D Nexperia Product Reliability Quality document 2024-06-16
SO-SOJ-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31
SO-SOJ-WAVE Footprint for wave soldering Wave soldering 2009-10-08
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

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Models

File name Title Type Date
SOT108-1 3D model for products with SOT108-1 package Design support 2020-01-22

PCB Symbol, Footprint and 3D Model

Model Name Description

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
74HCT280D 74HCT280D,653 933713890653 Active SOT108-1_653 2,500 Order product

Sample

As a Nexperia customer you can order samples via our sales organization.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT280D 74HCT280D,653 933713890653 SOT108-1 Order product