74LVC244A; 74LVCH244A
Octal buffer/line driver; 3-state
The 74LVC244A; 74LVCH244A are 8-bit buffer/line drivers with 3-state outputs. The devices can be used as two 4-bit buffers or one 8-bit buffer. Both devices 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 can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in mixed 3.3 V and 5 V environments.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.
This device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables the output, preventing the potentially damaging backflow current through the device when it is powered down.
Features and benefits
Wide supply voltage range from 1.2 V to 3.6 V
CMOS low-power consumption
Direct interface with TTL levels
Overvoltage tolerant inputs to 5.5 V
IOFF circuitry provdes partial Power-down mode operation
Bus hold on all data inputs (74LVCH244A only)
Complies with JEDEC standard:
JESD8-7A (1.65 V to 1.95 V)
JESD8-5A (2.3 V to 2.7 V)
JESD8-C/JESD36 (2.7 V to 3.6 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
Specified from -40 °C to +85 °C and -40 °C to +125 °C
參數類型
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC244ABQ | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 79 | 50 | DHVQFN20 | |
| 74LVC244ABZ | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 86 | 54.3 | DHXQFN20 | |
| 74LVC244AD | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 85 | 27.2 | 8 | SO20 |
| 74LVC244APW | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 101 | 4.6 | 45 | TSSOP20 |
| 74LVCH244ABQ | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 78 | 50 | DHVQFN20 | |
| 74LVCH244AD | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 85 | 27 | 61 | SO20 |
| 74LVCH244APW | 1.2?-?3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | 101 | 4.6 | 45 | TSSOP20 |
封裝
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態 | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74LVC244ABQ | 74LVC244ABQ,115 (935272505115) |
Active | LVC244A LVC244A Standard Procedure Standard Procedure |
DHVQFN20 (SOT764-1) |
SOT764-1 | SOT764-1_115 | |
| 74LVC244ABZ | 74LVC244ABZX (935691144115) |
Active | VC244 |
DHXQFN20 (SOT8020-1) |
SOT8020-1 | SOT8020-1_115 | |
| 74LVC244AD | 74LVC244AD,118 (935210400118) |
Active | 74LVC244AD 74LVC244AD Standard Procedure Standard Procedure |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
SOT163-1_118 |
| 74LVC244APW | 74LVC244APW,118 (935210420118) |
Active | LVC244A |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT360-1_118 |
| 74LVCH244ABQ | 74LVCH244ABQ,115 (935275418115) |
Active | LVCH244A |
DHVQFN20 (SOT764-1) |
SOT764-1 | SOT764-1_115 | |
| 74LVCH244AD | 74LVCH244AD,118 (935210330118) |
Active | 74LVCH244AD |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
SOT163-1_118 |
| 74LVCH244APW | 74LVCH244APW,118 (935210350118) |
Active | VCH244A |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT360-1_118 |
下表中的所有產品型號均已停產 。
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態 | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74LVC244ABX | 74LVC244ABX,115 (935289828115) |
Obsolete | LVC244A According NX3-00133 According NX3-00133 | no package information | |||
| 74LVC244AD | 74LVC244AD,112 (935210400112) |
Withdrawn / End-of-life | 74LVC244AD 74LVC244AD Standard Procedure Standard Procedure |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
暫無信息 |
| 74LVC244ADB | 74LVC244ADB,112 (935210410112) |
Obsolete |
SSOP20 (SOT339-1) |
SOT339-1 |
SSOP-TSSOP-VSO-WAVE
|
暫無信息 | |
| 74LVC244ADB,118 (935210410118) |
Obsolete | SOT339-1_118 | |||||
| 74LVC244APW | 74LVC244APW,112 (935210420112) |
Withdrawn / End-of-life | LVC244A |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
暫無信息 |
| 74LVCH244ABX | 74LVCH244ABX,115 (935289934115) |
Obsolete | LVCH244A Standard Procedure Standard Procedure | no package information | |||
| 74LVCH244ADB | 74LVCH244ADB,112 (935210340112) |
Obsolete | VCH244A |
SSOP20 (SOT339-1) |
SOT339-1 |
SSOP-TSSOP-VSO-WAVE
|
暫無信息 |
| 74LVCH244ADB,118 (935210340118) |
Obsolete | VCH244A | SOT339-1_118 | ||||
環境信息
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74LVC244ABQ | 74LVC244ABQ,115 | 74LVC244ABQ |
|
|
| 74LVC244ABZ | 74LVC244ABZX | 74LVC244ABZ |
|
|
| 74LVC244AD | 74LVC244AD,118 | 74LVC244AD |
|
|
| 74LVC244APW | 74LVC244APW,118 | 74LVC244APW |
|
|
| 74LVCH244ABQ | 74LVCH244ABQ,115 | 74LVCH244ABQ |
|
|
| 74LVCH244AD | 74LVCH244AD,118 | 74LVCH244AD |
|
|
| 74LVCH244APW | 74LVCH244APW,118 | 74LVCH244APW |
|
|
下表中的所有產品型號均已停產 。
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74LVC244ABX | 74LVC244ABX,115 | 74LVC244ABX |
|
|
| 74LVC244AD | 74LVC244AD,112 | 74LVC244AD |
|
|
| 74LVC244ADB | 74LVC244ADB,112 | 74LVC244ADB |
|
|
| 74LVC244ADB | 74LVC244ADB,118 | 74LVC244ADB |
|
|
| 74LVC244APW | 74LVC244APW,112 | 74LVC244APW |
|
|
| 74LVCH244ABX | 74LVCH244ABX,115 | 74LVCH244ABX |
|
|
| 74LVCH244ADB | 74LVCH244ADB,112 | 74LVCH244ADB |
|
|
| 74LVCH244ADB | 74LVCH244ADB,118 | 74LVCH244ADB |
|
|
文檔 (22)
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| 74LVC_LVCH244A | Octal buffer/line driver; 3-state | Data sheet | 2024-11-29 |
| AN11009 | Pin FMEA for LVC 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 | 2025-06-13 |
| mna875 | Block diagram: 74ABT2244D, 74ABT2244DB, 74ABT2244N, 74ABT2244PW, 74ABT244D, 74ABT244DB, 74ABT244N, 74ABT244PW, 74LVC244ABQ, 74LVC244ABX, 74LVC244AD, 74LVC244ADB, 74LVC244APW, 74LVCH244ABQ, 74LVCH244ABX, 74LVCH244AD, 74LVCH244ADB, 74LVCH244APW, 74LVCH245ABX, 74HC244BQ, 74HC244D, 74HC244DB, 74HC244N, 74HC244PW, 74HCT244BQ, 74HCT244D, 74HCT244DB, 74HCT244N, 74HCT244PW | Block diagram | 2009-11-03 |
| SOT764-1 | 3D model for products with SOT764-1 package | Design support | 2019-10-03 |
| SOT8020-1 | 3D model for products with SOT8020-1 package | Design support | 2023-02-02 |
| SOT163-1 | 3D model for products with SOT163-1 package | Design support | 2020-01-22 |
| SOT360-1 | 3D model for products with SOT360-1 package | Design support | 2020-01-22 |
| lvc244a | lvc244a IBIS model | IBIS model | 2021-02-02 |
| lvch244a | lvch244a IBIS model | IBIS model | 2013-04-09 |
| 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 |
| TSSOP20_SOT360-1_mk | plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| 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 |
| SOT8020-1 | plastic, leadless dual in-line compatible thermal enhanced extreme thin quad flat package;no leads; 20 terminals; 0.4 mm pitch; body 2 mm x 3.2 mm x 0.48 mm | Package information | 2023-02-28 |
| SOT163-1 | plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body | Package information | 2024-11-15 |
| SOT339-1 | plastic, shrink small outline package; 20 leads; 0.65 mm pitch; 7.2 mm x 5.3 mm x 2 mm body | Package information | 2020-04-21 |
| SOT360-1 | plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.2 mm body | Package information | 2024-11-15 |
| lvc | lvc Spice model | SPICE model | 2013-05-07 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
支持
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模型
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| SOT764-1 | 3D model for products with SOT764-1 package | Design support | 2019-10-03 |
| SOT8020-1 | 3D model for products with SOT8020-1 package | Design support | 2023-02-02 |
| SOT163-1 | 3D model for products with SOT163-1 package | Design support | 2020-01-22 |
| SOT360-1 | 3D model for products with SOT360-1 package | Design support | 2020-01-22 |
| lvc244a | lvc244a IBIS model | IBIS model | 2021-02-02 |
| lvch244a | lvch244a IBIS model | IBIS model | 2013-04-09 |
| lvc | lvc Spice model | SPICE model | 2013-05-07 |
Ordering, pricing & availability
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