74HCT280DB NRND

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

Not recommended for new designs (NRND), click here for the alternative product.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT280DB 74HCT280DB,118 935189870118 SOT337-1 Order product
74HCT280DB 74HCT280DB,112 935189870112 SOT337-1 Order product

Features

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC280: CMOS level
    • For 74HCT280: TTL level
  • Word-length easily expanded by cascading
  • Generates either odd or even parity for nine data bits
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C

Target applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74HCT280DB
NRND
Not for design in4.5 - 5.5TTL+/- 418low-40~12515640.0SSOP14

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HCT280DB
NRND
74HCT280DB,118
( 9351 898 70118 )
ActiveHCT280
SSOP14
(SOT337-1)
SOT337-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1
74HCT280DB,112
( 9351 898 70112 )
ActiveHCT280Bulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
74HCT280DB
NRND
74HCT280DB,11874HCT280DBweek 13, 200511
74HCT280DB
NRND
74HCT280DB,11274HCT280DBweek 13, 200511
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
74HC_HCT2809-bit odd, even parity generator, checkerData sheet2017-03-16
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SOT337-1_118Standard product orientation 12NC ending 118Packing2013-04-04
SOT337-1plastic, shrink small outline package; 14 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyOutline drawing2018-10-18

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT280DB74HCT280DB,118935189870118Reel 13" Q1/T1Order product
74HCT280DB74HCT280DB,112935189870112Bulk PackOrder product

Sample

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