SN54LVTH244A-SP
- Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
- Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 3.3 V, TA = 25°C - Support Unregulated Battery Operation Down to 2.7 V
- Ioff and Power-Up 3-State Support Hot Insertion
- Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
- Latch-Up Performance Exceeds 500 mA Per JESD 17
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
These octal buffers and line drivers are 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 ’LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the devices pass data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.
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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | SN54LVTH244A, SN74LVTH244A 数据表 (Rev. J) | 2003-10-8 | |||
| * | SMD | SN54LVTH244A-SP SMD 5962-95844 | 2016-7-8 | |||
| 选择指南 | TI Space Products (Rev. L) | 2026-3-27 | ||||
| 应用简报 | 经 DLA 批准的 QML 产品优化 (Rev. C) | PDF | HTML | 英语版 (Rev.C) | PDF | HTML | 2025-8-18 | |
| 应用手册 | 重离子轨道环境单粒子效应估算 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2025-7-7 | |
| 更多文献资料 | TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) | 2025-2-20 | ||||
| 应用手册 | 单粒子效应置信区间计算 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2022-12-2 |
设计与开发
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| CFP (W) | 20 | Ultra Librarian |
| LCCC (FK) | 20 | Ultra Librarian |
| CDIP (J) | 20 | Ultra Librarian |