SN74LVCZ245A
- Operate From 2.7 V to 3.6 V
- Inputs Accept Voltages to 5.5 V
- Max tpd of 6.3 ns at 3.3 V
- Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 3.3 V, TA= 25°C - Typical VOHV (Output VOH Undershoot)
>2 V at VCC = 3.3 V, TA = 25°C - Ioff and Power-Up 3-State Support Hot Insertion
- Support Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
- Latch-Up Performance Exceeds 100mA Per JESC 78, Class II
This octal bus transceiver is designed for 2.7-V to 3.6-V VCC operation.
The SN74LVCZ245A is 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.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.
When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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.
This device is 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 device when it is 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 | SN74LVCZ245A 数据表 (Rev. G) | 2003-8-7 |
设计与开发
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14-24-LOGIC-EVM — 采用 14 引脚至 24 引脚 D、DB、DGV、DW、DYY、NS 和 PW 封装的逻辑产品通用评估模块
14-24-LOGIC-EVM 评估模块 (EVM) 设计用于支持采用 14 引脚至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOP (NS) | 20 | Ultra Librarian |
| TSSOP (PW) | 20 | Ultra Librarian |
| SOIC (DW) | 20 | Ultra Librarian |
| SSOP (DB) | 20 | Ultra Librarian |