SN74LVC257A
- Operate from 1.65V to 3.6V
- Inputs accept voltages to 5.5V
- Maximum tpd of 4.6ns at 3.3V
- Typical VOLP (output ground bounce) <0.8V at VCC = 3.3V, TA = 25°C
- Typical VOHV (output VOH undershoot) >2V at VCC = 3.3V, TA = 25°C
- Latch-up performance exceeds 250mA per JESD 17
- ESD protection exceeds JESD 22
- 2000V human-body model (A114-A)
- 200V machine model (A115-A)
- On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
These quadruple 2-line to 1-line data selectors and multiplexers are designed for 1.65V to 3.6V VCC operation.
The SNx4LVC257A devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable ( OE) input is at a high logic level.
Inputs can be driven from either 3.3V or 5V devices. This feature allows the use of these devices as translators in a mixed 3.3V or 5V system environment.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | SNx4LVC257A Quadruple 2-Line to 1-Line Data Selectors and Multiplexers With 3-State Outputs datasheet (Rev. Q) | PDF | HTML | 2024/12/13 |
設計與開發
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14-24-LOGIC-EVM — 適用於 14 針腳至 24 針腳 D、DB、DGV、DW、DYY、NS 和 PW 封裝的邏輯產品通用評估模組
14-24-LOGIC-EVM 評估模組 (EVM) 設計用於支援任何 14 針腳至 24 針腳 D、DW、DB、NS、PW、DYY 或 DGV 封裝的任何邏輯裝置。
14-24-NL-LOGIC-EVM — 適用於 14 針腳至 24 針腳無引線封裝的邏輯產品通用評估模組
14-24-NL-LOGIC-EVM 是一款靈活的評估模組 (EVM)，設計用於支援任何具有 14 針腳至 24 針腳 BQA、BQB、RGY、RSV、RJW 或 RHL 封裝的邏輯或轉換裝置。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
| SOIC (D) | 16 | Ultra Librarian |
| SOP (NS) | 16 | Ultra Librarian |
| WQFN (BQB) | 16 | Ultra Librarian |
| VQFN (RGY) | 16 | Ultra Librarian |
| SSOP (DB) | 16 | Ultra Librarian |