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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.

特性

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

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

  • Multiple package options

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

参数类型

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
74HC259BQProduction2.0 - 6.0CMOS± 5.218low-40~1258910.857DHVQFN16
74HC259DProduction2.0 - 6.0CMOS± 5.218low-40~125887.747SO16
74HC259PWProduction2.0 - 6.0CMOS± 5.218low-40~1251213.649.9TSSOP16
74HCT259BQProduction4.5 - 5.5TTL± 420low-40~1258910.857DHVQFN16
74HCT259DProduction4.5 - 5.5TTL± 420low-40~125887.747SO16
74HCT259PWProduction4.5 - 5.5TTL± 420low-40~1251213.649.9TSSOP16

封装

型号封装尺寸版本回流焊/波峰焊包装状态标示可订购的器件编号，（订购码(12NC)）
74HC259BQ
DHVQFN16
(SOT763-1) 		SOT763-1SOT763-1_115ActiveHC25974HC259BQ,115
( 9352 884 55115 )
74HC259D
SO16
(SOT109-1) 		SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_653Active74HC259D74HC259D,653
( 9337 146 50653 )
74HC259PW
TSSOP16
(SOT403-1) 		SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHC25974HC259PW,118
( 9351 746 90118 )
74HCT259BQ
DHVQFN16
(SOT763-1) 		SOT763-1SOT763-1_115ActiveHCT25974HCT259BQ,115
( 9352 884 56115 )
74HCT259D
SO16
(SOT109-1) 		SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_653Active74HCT259D74HCT259D,653
( 9337 151 30653 )
74HCT259PW
TSSOP16
(SOT403-1) 		SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHCT25974HCT259PW,118
( 9351 884 10118 )

下表中的版本已停产。参见表 停产信息 了解更多信息。

型号封装尺寸版本回流焊/波峰焊包装状态标示可订购的器件编号，（订购码(12NC)）
74HC259D
SO16
(SOT109-1) 		SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_652Withdrawn / End-of-life74HC259D74HC259D,652
( 9337 146 50652 )
74HCT259D
SO16
(SOT109-1) 		SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_652Withdrawn / End-of-life74HCT259D74HCT259D,652
( 9337 151 30652 )
74HCT259PW
TSSOP16
(SOT403-1) 		SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_112Withdrawn / End-of-lifeHCT25974HCT259PW,112
( 9351 884 10112 )

停产信息

型号可订购的器件编号，（订购码(12NC)）最后一次购买日期最后一次交货日期替代产品状态备注
74HC259D9337146506522021-12-312022-06-3074HC259D
    74HC259PW9351746901122021-12-312022-06-3074HC259PW
      74HCT259D9337151306522021-12-312022-06-3074HCT259D
        74HCT259PW9351884101122021-12-312022-06-3074HCT259PW

          环境信息

          型号可订购的器件编号化学成分RoHSRHF指示符无铅转换日期
          74HC259BQ74HC259BQ,11574HC259BQAlways Pb-free
          74HC259D74HC259D,65374HC259Dweek 6, 2004
          74HC259PW74HC259PW,11874HC259PWweek 10, 2005
          74HCT259BQ74HCT259BQ,11574HCT259BQAlways Pb-free
          74HCT259D74HCT259D,65374HCT259Dweek 30, 2004
          74HCT259PW74HCT259PW,11874HCT259PWweek 10, 2005

          下表中的版本已停产。参见表 停产信息 了解更多信息。

          型号可订购的器件编号化学成分RoHSRHF指示符无铅转换日期
          74HC259D74HC259D,65274HC259Dweek 6, 2004
          74HCT259D74HCT259D,65274HCT259Dweek 30, 2004
          74HCT259PW74HCT259PW,11274HCT259PWweek 10, 2005
          品质及可靠性免责声明

          文档 (12)

          文件名称标题类型日期
          74HC_HCT2598-bit addressable latchData sheet2024-03-11
          AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
          hc25974HC259 IBIS modelIBIS model2022-10-21
          hct25974HCT259 IBIS modelIBIS model2022-10-21
          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 information2023-05-11
          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
          SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07
          SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-08
          SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08

          支持

          如果您需要设计/技术支持，请告知我们并填写 应答表, 我们会尽快回复您。

          模型

          文件名称标题类型日期
          hc25974HC259 IBIS modelIBIS model2022-10-21
          hct25974HCT259 IBIS modelIBIS model2022-10-21

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