请问 Octalloading bufferr / Driver是做什么的？

来源：蜘蛛抓取(WebSpider) 时间：2012-04-05 04:57 标签： loading buffer
SN74LVT244B 具有三态输出的 3.3V ABT 八路缓冲器/驱动器_ BDTIC代理SN74LVT244B
SN74LVT244B 具有三态输出的 3.3V ABT 八路缓冲器/驱动器
SN74LVT244B 描述
This octal buffer and line driver is designed specifically for low-voltage
(3.3-V) VCC operation, but with the capability to provide a TTL
interface to a 5-V system environment.
The SN74LVT244B is organized as two 4-bit line drivers with separate
output-enable (OE)\ inputs. When OE\ is low, the device passes data from the A
inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance
To ensure the high-impedance state during power up or power down, OE\ should
be tied to VCC throu the minimum value of the
resistor is determined by the current-sinking capability of the driver.
This device is fully specified for hot-insertion
applications using Ioff and power-up 3-state
Voltage Nodes(V)
Technology Family
SN74LVT244B 特性
Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With
3.3-V VCC)
Supports Unregulated Battery Operation Down to 2.7 V
Typical VOLP (Output Ground Bounce)
VCC = 3.3 V, TA = 25°C
Ioff and Power-Up 3-State Support Hot Insertion
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
2000-V Human-Body Model (A114-A)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
SN74LVT244B 芯片订购指南
价格（美元）
封装 | 引脚
封装数量 | 封装载体
SN74LVT244BD
0.28 | 1ku
SN74LVT244BDE4
0.28 | 1ku
SN74LVT244BDG4
0.28 | 1ku
SN74LVT244B 质量与无铅数据
铅/焊球涂层
MSL 等级/回流焊峰
环保信息与无铅 (Pb-free)
DPPM / MTBF / FIT 率
SN74LVT244BD
Green (RoHS & no Sb/Br)
Level-1-260C-UNLIM
SN74LVT244BD
SN74LVT244BD
SN74LVT244BDE4
Green (RoHS & no Sb/Br)
Level-1-260C-UNLIM
SN74LVT244BDE4
SN74LVT244BDE4
SN74LVT244BDG4
Green (RoHS & no Sb/Br)
Level-1-260C-UNLIM
SN74LVT244BDG4
SN74LVT244B 应用技术支持与电子电路设计开发资源下载
(PDF 951 KB)
(PDF 3005 KB)
（修订版 Z）(4462KB)
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