74LV244
Octal buffer/line driver; 3-state
The 74LV244 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. This enables the use of current limiting resistors to interface inputs to voltages in excess VCC.
Features and benefits
Wide supply voltage range from 1.0 V to 5.5 V
CMOS low power dissipation
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Optimized for low voltage applications: 1.0 V to 3.6 V
Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V
Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V; Tamb = 25 °C
Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V; Tamb = 25 °C
Complies with JEDEC standards:
- JESD8-7 (1.65 V to 1.95 V)
- JESD8-5 (2.3 V to 2.7 V)
- JESD8C (2.7 V to 3.6 V)
- JESD36 (4.5 V to 5.5 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 from -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) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LV244APW | 2.0?-?5.5 | CMOS | ± 16 | 60 | 8 | low | -40~125 | 101 | 4.7 | 45 | TSSOP20 |
| 74LV244ATPW | 4.5?-?5.5 | TTL | ± 16 | 60 | 8 | low | -40~125 | 101 | 4.7 | 45 | TSSOP20 |
| 74LV244D | 1.0?-?5.5 | CMOS | ± 16 | 30 | 8 | low | -40~125 | 76 | 18.2 | 52 | SO20 |
| 74LV244PW | 1.0?-?5.5 | CMOS | ± 16 | 30 | 8 | low | -40~125 | 94 | 2.9 | 38.3 | TSSOP20 |
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 |
|---|---|---|---|---|---|---|---|
| 74LV244APW | 74LV244APWJ (935308259118) |
Active | LV244A |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT360-1_118 |
| 74LV244ATPW | 74LV244ATPWJ (935308261118) |
Active | LV244AT |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT360-1_118 |
| 74LV244D | 74LV244D,118 (935056370118) |
Active | 74LV244D |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
SOT163-1_118 |
| 74LV244PW | 74LV244PW,118 (935174650118) |
Active | LV244 |
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(tài) | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74LV244DB | 74LV244DB,112 (935073680112) |
Obsolete | LV244 |
SSOP20 (SOT339-1) |
SOT339-1 |
SSOP-TSSOP-VSO-WAVE
|
暫無信息 |
| 74LV244DB,118 (935073680118) |
Obsolete | LV244 | SOT339-1_118 | ||||
| 74LV244PW | 74LV244PW,112 (935174650112) |
Withdrawn / End-of-life | LV244 |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
暫無信息 |
環(huán)境信息
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74LV244APW | 74LV244APWJ | 74LV244APW |
|
|
| 74LV244ATPW | 74LV244ATPWJ | 74LV244ATPW |
|
|
| 74LV244D | 74LV244D,118 | 74LV244D |
|
|
| 74LV244PW | 74LV244PW,118 | 74LV244PW |
|
|
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 |
|---|---|---|---|---|
| 74LV244DB | 74LV244DB,112 | 74LV244DB |
|
|
| 74LV244DB | 74LV244DB,118 | 74LV244DB |
|
|
| 74LV244PW | 74LV244PW,112 | 74LV244PW |
|
|
文檔 (15)
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| 74LV244 | Octal buffer/line driver; 3-state | Data sheet | 2024-07-04 |
| 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 |
| sv00363 | Block diagram: 74LV244D, 74LV244DB, 74LV244N, 74LV244PW, 74LV244U | Block diagram | 2009-11-03 |
| SOT360-1 | 3D model for products with SOT360-1 package | Design support | 2020-01-22 |
| SOT163-1 | 3D model for products with SOT163-1 package | Design support | 2020-01-22 |
| lv244 | 74LV244 IBIS model | IBIS model | 2019-01-09 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| 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 |
| 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 |
| 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 |
| lv | lv Spice model | SPICE model | 2013-05-07 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
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