TRS3243E
- Single-chip and single-supply interface for IBM™ PC/AT™ serial port
- ESD Protection for RS-232 bus pins
- ±15-kV Human-body model (HBM)
- ±8-kV IEC61000-4-2, Contact discharge
- ±15-kV IEC61000-4-2, Air-gap discharge
- Meets or exceeds requirements of TIA/EIA-232-F and ITU v.28 standards
- Operates with 3-V to 5.5-V VCC supply
- Always-active noninverting receiver output (ROUT2B)
- Designed to transmit at a data rate up to 500 kbit/s
- Low standby current: 1 µA typical
- External capacitors: 4 × 0.1 µF
- Accepts 5-V logic input with 3.3-V supply
- Designed to be interchangeable with industry standard ’3243E devices
- Serial-mouse driveability
- Auto-powerdown feature to disable driver outputs when no valid RS-232 signal is sensed
- Package options include plastic small-outline (DW), shrink small-outline (DB), and thin shrink small-outline (PW)
The TRS3243E device consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBM and IEC61000-4-2, Air-Gap Discharge) and ±8-kV ESD (IEC61000-4-2, Contact Discharge) protection on serial-port connection pins. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. This combination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, or compatible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to transmit data while the device is powered down. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
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 | TRS3243E 3-V to 5.5-V Multichannel RS-232 Line Driver or Receiver With ±15-kV IEC ESD Protection datasheet (Rev. E) | PDF | HTML | 2022/12/23 | ||
| 應用說明 | RS-232 Glossary and Selection Guide | PDF | HTML | 2023/5/23 | |||
| 技術文章 | How the RS-232 transceiver’s regulated charge-pump circuitry works | PDF | HTML | 2018/6/28 | |||
| 應用說明 | Understanding Power Requirements in RS-232 Applications (Rev. B) | 2013/4/26 | ||||
| 應用說明 | AN-438 Low Power RS-232C Driver and Receiver in CMOS (Rev. B) | 2013/4/26 | ||||
| 應用說明 | Removing Ground Noise in Data Transmission Systems | 2007/10/5 | ||||
| 更多文件說明 | RS-232 IEC ESD-Protected Devices From TI (Rev. A) | 2007/7/27 | ||||
| 應用說明 | Interface Circuits for TIA/EIA-232-F (Rev. A) | 2002/9/19 | ||||
| 應用說明 | Low-Voltage, Single-Supply 232-Standard Interface Solutions (Rev. A) | 2000/9/19 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TIDA-00540 — RS-485 / RS-232 多協定收發器參考設計
此設計 (TIDA-00540) 允許透過 RS-485 或 RS-232 資料匯流排通訊，而無需每個匯流排單獨配線。 兩種不同類型的收發器共用資料線，並透過單一控制訊號決定要使用的通訊協定。
TIDA-00557 — 適用於保護繼電器、IED 和變電所自動化的 RS-232 數據機介面模組參考設計
TIDA-00557 參考設計使用 DB-9 插頭型連接器並佈建資料通訊設備 (DCE) 介面，為資料終端設備 (DTE) 提供真正的 RS-232 (八訊號 + 接地) 實體層介面。此設計主要用於智慧電網 IED，保護繼電器和變電所自動化領域。此設計符合 IEC61000-4-2 標準的 +-/ 8kV 觸點放電 ESD 防護，以及 IEC61000-4-5 標準的 +/-1kV 突波防護。
TIDA-060008 — 用於將 RS-232 訊號轉換爲 RS-485 訊號的參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (DW) | 28 | Ultra Librarian |
| TSSOP (PW) | 28 | Ultra Librarian |
| SSOP (DB) | 28 | Ultra Librarian |
| VQFN (RHB) | 32 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。