SN74LV245A 具有三态输出的八路总线收发器
These octal bus transceivers are designed for 2-V to 5.5-V VCC operation.
The ’LV245A devices are designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so the buses are effectively isolated.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down
| SN74LV245A | |
| Voltage Nodes(V) | 5, 3.3, 2.5 |
| Vcc range(V) | 2.0 to 5.5 |
| Rating | Catalog |
| Technology Family | LV-A |
SN74LV245A 特性
- 2-V to 5.5-V VCC Operation
- Max tpd of 6.5 ns at 5 V
- Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
- Typical VOHV (Output VOH Undershoot) >2.3 V at VCC = 3.3 V, TA = 25°C
- Supports Mixed-Mode Voltage Operation on All Ports
- Ioff Supports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 250 mA Per JESD 17
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
SN74LV245A 芯片订购指南
| 器件 | 状态 | 温度 | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| SN74LV245ADW | ACTIVE | -40 to 85 | 3.05 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74LV245ADWE4 | ACTIVE | -40 to 85 | 3.05 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74LV245ADWG4 | ACTIVE | -40 to 85 | 3.05 | 1ku | SOIC (DW) | 20 | 25 | TUBE |
SN74LV245A 质量与无铅数据
| 器件 | 环保计划* | 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 |
| SN74LV245ADW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LV245ADW | SN74LV245ADW |
| SN74LV245ADWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LV245ADWE4 | SN74LV245ADWE4 |
| SN74LV245ADWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LV245ADWG4 | SN74LV245ADWG4 |
SN74LV245A 应用技术支持与电子电路设计开发资源下载
- SN74LV245A 数据资料 dataSheet 下载.PDF
- TI 德州仪器缓冲器、驱动器/收发器产品选型与价格 . xls
- CMOS 非缓冲反向器在振荡器电路中的使用 (PDF 951 KB)
- Semiconductor Packing Methodology (PDF 3005 KB)
- 逻辑产品选择指南 2006/2007 （修订版 Z）(4462KB)
- 标准线性和逻辑产品 5 分钟指南 (786KB)
- 了解和解释标准逻辑数据表
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)
