TRS3318E
- ESD Protection for RS-232 I/O Pins
- ±15 kV (Human-Body Model)
- ±8 kV (IEC 61000-4-2, Contact Discharge)
- ±15 kV (IEC 61000-4-2, Air-Gap Discharge)
- 300-µA Operating Supply Current
- 1-µA Low-Power Standby Mode (With Receivers Active)
- Designed to Transmit at a Data Rate of
460 kbps - Auto-Powerdown Plus Option Features Flexible Power-Saving Mode
- Operates From a Single 2.25-V to 3-V VCC Supply
- Designed to be Interchangeable With Industry Standard '3318 Devices
The TRS3318E is a dual-driver, dual-receiver, RS-232-compatible transceiver. The device features auto-powerdown plus and enhanced electrostatic discharge (ESD) protection integrated into the chip. Driver output and receiver input are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).
The device operates at a data rate of 460 kbps. The transceiver has a proprietary low-dropout driver output stage, enabling RS-232-compatible operation from a 2.25-V to 3-V supply with a dual charge pump. The charge pump requires only four 0.1-µF capacitors and features a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.
The TRS3318E achieves a 1-µA supply current using the auto-powerdown feature. This device automatically enters a low-power power-down mode when the RS-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 s. The device turns on again when it senses a valid transition at any driver or receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.
This device is available in two space-saving packages: 20-pin SSOP and 20-pin TSSOP.
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 | TRS3318E 2.5-V 460-kbps RS-232 Transceiver With +/-15-kV ESD Protection 数据表 (Rev. B) | 2013-10-11 | |||
| 技术文章 | How the RS-232 transceiver’s regulated charge-pump circuitry works | PDF | HTML | 2018-6-28 | |||
| 应用手册 | Understanding Power Requirements in RS-232 Applications (Rev. B) | 2013-4-26 | ||||
| 应用手册 | Removing Ground Noise in Data Transmission Systems | 2007-10-5 | ||||
| 应用手册 | TIA/EIA-232-F 的接口电路 (Rev. A) | 2002-9-19 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TIDA-00540 — RS-485 / RS-232 多协议收发器参考设计
该设计 (TIDA-00540) 允许通过 RS-485 或 RS-232 数据总线进行通信，无需为每个总线单独接线。 数据线路在两种不同的收发器类型之间共享，并使用单一控制信号来确定要使用哪种协议。
TIDA-060008 — 用于将 RS-232 信令转换为 RS-485 信令的参考设计
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (PW) | 20 | Ultra Librarian |
| SSOP (DB) | 20 | Ultra Librarian |
订购和质量
推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。