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74AHC257; 74AHCT257

Quad 2-input multiplexer; 3-state

The 74AHC257; 74AHCT257 is a quad 2-input multiplexer with 3-state outputs. Inputs are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

特性

  • Balanced propagation delays

  • All inputs have Schmitt-trigger actions

  • Non-inverting data path

  • Wide supply voltage range from 2.0 V to 5.5 V

  • Input levels:

    • For 74AHC257: CMOS level

    • For 74AHCT257: TTL level

  • Overvoltage tolerant inputs to 5.5 V

  • High noise immunity

  • CMOS low power dissipation

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level A

  • 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 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
74AHC257DProduction2.0 - 5.5CMOS± 82.9low-40~1259410.353SO16
74AHC257PWProduction2.0 - 5.5CMOS± 82.9low-40~1251264.956.3TSSOP16
74AHCT257DProduction4.5 - 5.5TTL± 83.7low-40~125939.752SO16
74AHCT257PWProduction4.5 - 5.5TTL± 83.7low-40~1251254.654.9TSSOP16

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))
74AHC257D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74AHC257D74AHC257D,118
( 9352 654 67118 )
74AHC257PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveAHC25774AHC257PW,118
( 9352 654 68118 )
74AHCT257D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74AHCT257D74AHCT257D,118
( 9352 654 69118 )
74AHCT257PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveAHCT25774AHCT257PW,118
( 9352 654 70118 )

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
74AHC257D9352654671122021-12-312022-06-3074AHC257D
    74AHC257PW9352654681122021-12-312022-06-3074AHC257PW
      74AHCT257D9352654691122021-12-312022-06-3074AHCT257D
        74AHCT257PW9352654701122018-12-312019-06-3074AHCT257PW

          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
          74AHC257D74AHC257D,11874AHC257Dweek 35, 2004
          74AHC257PW74AHC257PW,11874AHC257PWweek 10, 2005
          74AHCT257D74AHCT257D,11874AHCT257Dweek 35, 2004
          74AHCT257PW74AHCT257PW,11874AHCT257PWweek 10, 2005
          品质及可靠性免责声明

          文档 (9)

          文件名称标题类型日期
          74AHC_AHCT257Quad 2-input multiplexer; 3-stateData sheet2024-03-07
          ahct257ahct257 IBIS modelIBIS model2013-04-07
          ahc257ahc257 IBIS modelIBIS model2013-04-07
          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
          ahct257ahct257 IBIS modelIBIS model2013-04-07
          ahc257ahc257 IBIS modelIBIS model2013-04-07

          样品

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