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74HCT244BQ

Octal buffer/line driver; 3-state

The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable 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 to 6.0 V

  • CMOS low power dissipation

  • High noise immunity

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

  • Input levels:

    • For 74HC244: CMOS level

    • For 74HCT244: TTL level

  • Octal bus interface

  • Non-inverting 3-state outputs

  • 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

  • Multiple package options

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

参数类型

型号 Product status VCC (V) Logic switching levels Output drive capability (mA) fmax (MHz) Nr of bits Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Rth(j-c) (K/W) Package name
74HCT244BQ Production 4.5 - 5.5 TTL ± 6 36 8 low -40~125 78 50 DHVQFN20

PCB Symbol, Footprint and 3D Model

Model Name 描述

封装

型号 可订购的器件编号，（订购码(12NC)） 状态 标示 封装 外形图 回流焊/波峰焊 包装
74HCT244BQ 74HCT244BQ,115
(935273729115)		 Active HCT244 SOT764-1
DHVQFN20
(SOT764-1) 		SOT764-1 SOT764-1_115

环境信息

型号 可订购的器件编号 化学成分 RoHS RHF指示符
74HCT244BQ 74HCT244BQ,115 74HCT244BQ rohs rhf rhf
品质及可靠性免责声明

文档 (12)

文件名称 标题 类型 日期
74HC_HCT244 Octal buffer/line driver; 3-state Data sheet 2021-07-28
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
AN263 Power considerations when using CMOS and BiCMOS logic devices Application note 2023-02-07
SOT764-1 3D model for products with SOT764-1 package Design support 2019-10-03
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
DHVQFN20_SOT764-1_mk plastic, dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 2.5 mm x 4.5 mm x 0.85 mm body Marcom graphics 2017-01-28
D12_PC_sch_ver2_0 D12_PC_sch_ver2_0 Other type 2023-09-12
SOT764-1 plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm body Package information 2022-06-21
SOT764-1_115 DHVQFN20; Reel pack for SMD, 7''; Q1/T1 product orientation Packing information 2020-04-21
74HCT244BQ_Nexperia_Product_Reliability 74HCT244BQ Nexperia Product Reliability Quality document 2023-05-29
hc HC/HCT Spice model SPICE model 2022-02-17
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31

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
hc HC/HCT Spice model SPICE model 2022-02-17
SOT764-1 3D model for products with SOT764-1 package Design support 2019-10-03

PCB Symbol, Footprint and 3D Model

Model Name 描述

订购、定价与供货

型号 Orderable part number Ordering code (12NC) 状态 包装 Packing Quantity 在线购买
74HCT244BQ 74HCT244BQ,115 935273729115 Active SOT764-1_115 3,000 订单产品

样品

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How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

可订购部件

型号 可订购的器件编号 订购代码(12NC) 封装 从经销商处购买
74HCT244BQ 74HCT244BQ,115 935273729115 SOT764-1 订单产品
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