可訂購部件
| 型號 | 可訂購的器件編號 | 訂購代碼(12NC) | 封裝 | 從經(jīng)銷商處購買 |
|---|---|---|---|---|
| 74HC244BQ | 74HC244BQ,115 | 935273678115 | SOT764-1 | 訂單產(chǎn)品 |
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Click here for more information74HC244BQ
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.
Alternatives
Features and benefits
Wide supply voltage range from 2.0 V 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: 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 -40 °C to +125 °C
參數(shù)類型
| 型號 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC244BQ | 2.0?-?6.0 | CMOS | ± 7.8 | 36 | 8 | low | -40~125 | 78 | 50 | DHVQFN20 |
PCB Symbol, Footprint and 3D Model
| Model Name | 描述 |
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封裝
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態(tài) | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74HC244BQ | 74HC244BQ,115 (935273678115) |
Active | HC244 |
DHVQFN20 (SOT764-1) |
SOT764-1 | SOT764-1_115 |
Series
文檔 (13)
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| 74HC_HCT244 | Octal buffer/line driver; 3-state | Data sheet | 2024-08-05 |
| 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 |
| AN90063 | Questions about package outline drawings | Application note | 2025-10-22 |
| 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 | 2025-10-24 |
| 74HC244BQ_Nexperia_Product_Reliability | 74HC244BQ Nexperia Product Reliability | Quality document | 2025-03-20 |
| hc | HC/HCT Spice model | SPICE model | 2022-02-17 |
| HCT_USER_GUIDE | HC/T User Guide | User manual | 1997-10-31 |
Longevity
The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.
PCB Symbol, Footprint and 3D Model
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訂購、定價與供貨
| 型號 | Orderable part number | Ordering code (12NC) | 狀態(tài) | 包裝 | Packing Quantity | 在線購買 |
|---|---|---|---|---|---|---|
| 74HC244BQ | 74HC244BQ,115 | 935273678115 | Active | SOT764-1_115 | 3,000 |
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樣品
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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.