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74HC259; 74HCT259

8-bit addressable latch

The 74HC259; 74HCT259 is an 8-bit addressable latch. The device features four modes of operation. In the addressable latch mode, data on the D input is written into the latch addressed by the inputs A0 to A3. The addressed latch will follow the data input, non-addressed latches will retain their previous states. In memory mode, all latches retain their previous states and are unaffected by the data or address inputs. In the 3-to-8 decoding or demultiplexing mode, the addressed output follows the D input and all other outputs are LOW. In the reset mode, all outputs are forced LOW and unaffected by the data or address inputs. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Wide supply voltage range from 2.0 V to 6.0 V
  • 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)
  • Combined demultiplexer and 8-bit latch
  • Serial-to-parallel capability
  • Output from each storage bit available
  • Random (addressable) data entry
  • Easily expandable
  • Common reset input
  • Useful as a 3-to-8 active HIGH decoder
  • Input levels:
    • For 74HC259: CMOS level
    • For 74HCT259: TTL level
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
    • CDM JESD22E exceeds 1000 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)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC259BQProduction2.0 - 6.0CMOS± 5.2188low-40~1258910.857DHVQFN16
74HC259DProduction2.0 - 6.0CMOS± 5.2188low-40~125887.747SO16
74HC259PWProduction2.0 - 6.0CMOS± 5.2188low-40~1251213.649.9TSSOP16
74HCT259BQProduction4.5 - 5.5TTL± 4208low-40~1258910.857DHVQFN16
74HCT259DProduction4.5 - 5.5TTL± 4208low-40~125887.747SO16
74HCT259PWProduction4.5 - 5.5TTL± 4208low-40~1251213.649.9TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC259BQ
DHVQFN16
(SOT763-1)
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveHC25974HC259BQ,115
( 9352 884 55115 )
74HC259D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC259D74HC259D,653
( 9337 146 50653 )
74HC259PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC25974HC259PW,118
( 9351 746 90118 )
74HCT259BQ
DHVQFN16
(SOT763-1)
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveHCT25974HCT259BQ,115
( 9352 884 56115 )
74HCT259D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT259D74HCT259D,653
( 9337 151 30653 )
74HCT259PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT25974HCT259PW,118
( 9351 884 10118 )

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))
74HC259D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HC259D74HC259D,652
( 9337 146 50652 )
74HC259PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHC25974HC259PW,112
( 9351 746 90112 )
74HCT259D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HCT259D74HCT259D,652
( 9337 151 30652 )
74HCT259PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHCT25974HCT259PW,112
( 9351 884 10112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC259D933714650652
74HC259PW935174690112
74HCT259D933715130652
74HCT259PW935188410112

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC259BQ74HC259BQ,11574HC259BQAlways Pb-free29.90.91.11E911
74HC259D74HC259D,65374HC259Dweek 6, 200429.90.91.11E911
74HC259PW74HC259PW,11874HC259PWweek 10, 200529.90.91.11E911
74HCT259BQ74HCT259BQ,11574HCT259BQAlways Pb-free29.90.91.11E911
74HCT259D74HCT259D,65374HCT259Dweek 30, 200429.90.91.11E911
74HCT259PW74HCT259PW,11874HCT259PWweek 10, 200529.90.91.11E911

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
74HC259D74HC259D,65274HC259Dweek 6, 200429.90.91.11E911
74HC259PW74HC259PW,11274HC259PWweek 10, 200529.90.91.11E911
74HCT259D74HCT259D,65274HCT259Dweek 30, 200429.90.91.11E911
74HCT259PW74HCT259PW,11274HCT259PWweek 10, 200529.90.91.11E911
Quality and reliability disclaimer

Documentation (10)

File nameTitleTypeDate
74HC_HCT2598-bit addressable latchData sheet2020-09-02
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
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

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