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74HC7540; 74HCT7540

Octal Schmitt trigger buffer/line driver; 3-state; inverting

The 74HC7540; 74HCT7540 is an 8-bit inverting buffer/line driver with Schmitt-trigger inputs and 3-state outputs. The device features two output enables (OE1 and OE2). A HIGH on OEn causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. Schmitt trigger inputs transform slowly changing input signals into sharply defined jitter-free output signals.

特性

  • Wide supply voltage range from 2.0 to 6.0 V

  • CMOS low power dissipation

  • High noise immunity

  • Unlimited input rise and fall times

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

  • Inverting outputs

  • Input levels:

    • For 74HC7540: CMOS level

    • For 74HCT7540: TTL level

  • Complies with JEDEC standards

    • JESD8C (2.7 V to 3.6 V)

    • JESD7A (2.0 V to 6.0 V)

  • ESD protection:

    • HBM JESD22-A114F exceeds 2000 V

    • MM JESD22-A115-A exceeds 200 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)fmax (MHz)Nr of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Rth(j-c) (K/W)Package name
74HC7540DProduction2.0 - 6.0CMOS± 7.8368low-40~1256945SO20
74HC7540PWProduction2.0 - 6.0CMOS± 7.8368low-40~12510045TSSOP20
74HCT7540DProduction4.5 - 5.5TTL± 6368low-40~1256945SO20

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)）
74HC7540D
SO20
(SOT163-1) 		SOT163-1WAVE_BG-BD-1
SOT163-1_118Active74HC7540D74HC7540D,118
( 9339 678 60118 )
74HC7540PW
TSSOP20
(SOT360-1) 		SOT360-1SSOP-TSSOP-VSO-WAVE
SOT360-1_118Active4HC754074HC7540PWJ
( 9356 912 07118 )
74HCT7540D
SO20
(SOT163-1) 		SOT163-1WAVE_BG-BD-1
SOT163-1_118Active74HCT7540D74HCT7540D,118
( 9339 679 00118 )

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)）
74HC7540D
SO20
(SOT163-1) 		SOT163-1WAVE_BG-BD-1
SOT163-1_112Withdrawn / End-of-life74HC7540D74HC7540D,112
( 9339 678 60112 )
74HCT7540D
SO20
(SOT163-1) 		SOT163-1WAVE_BG-BD-1
SOT163-1_112Withdrawn / End-of-life74HCT7540D74HCT7540D,112
( 9339 679 00112 )

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
74HC7540D9339678601122021-12-312022-06-3074HC7540D
    74HCT7540D9339679001122021-12-312022-06-3074HCT7540D

      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
      74HC7540D74HC7540D,11874HC7540Dweek 30, 2004
      74HC7540PW74HC7540PWJ74HC7540PW
      74HCT7540D74HCT7540D,11874HCT7540Dweek 30, 2004

      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
      74HC7540D74HC7540D,11274HC7540Dweek 30, 2004
      74HCT7540D74HCT7540D,11274HCT7540Dweek 30, 2004
      品质及可靠性免责声明

      文档 (5)

      文件名称标题类型日期
      74HC_HCT7540Octal Schmitt trigger buffer/line driver; 3-state; invertingData sheet2023-11-09
      SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
      SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyPackage information2022-06-21
      SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyPackage information2022-06-20
      WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

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