TRS3221E
- ESD Protection for RS-232 Pins
- ±15-kV Human-Body Model (HBM)
- ±8 kV (IEC 61000-4-2, contact discharge)
- ±15 kV (IEC 61000-4-2, air-gap discharge)
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards
- Operates with 3-V to 5.5-V VCC supply
- Operates up to 250 kbit/s
- One driver and one receiver
- Near chip-scale package, 16-pin VQFN (RGT, 82% smaller than TSSOP package)
- Low standby current: 1 µA Typical
- External capacitors: 4 × 0.1 µF
- Accepts 5-V logic input with 3.3-V supply
- Alternative high-speed pin-compatible device (1 Mbit/s)
- TRSF3221E
- Auto-powerdown feature automatically disables drivers for power savings
The TRS3221E is a single driver, single receiver RS-232 solution operating from a single VCC supply. The RS-232 pins provide IEC G1000-4-2 ESD protection. 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. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal on the receiver input, the driver output is disabled. If FORCEOFF is set low and EN is high, both the driver and receiver are shut off, and the supply current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high.
With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high (valid data) if the receiver input voltage is greater than 2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 7-5 for receiver input levels.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TRS3221E 3-V TO 5.5-V Single-Channel RS-232 Line Driver/Receiver with ±15-kV IEC ESD Protection In Small Package datasheet (Rev. B) | PDF | HTML | 2021年 7月 16日 |
| Application note | RS-232 Glossary and Selection Guide | PDF | HTML | 2023年 5月 23日 | |
| EVM User's guide | TRS3221 EVM User's Guide | 2020年 11月 10日 | ||
| Application note | AN-438 Low Power RS-232C Driver and Receiver in CMOS (Rev. B) | 2013年 4月 26日 | ||
| Application note | Understanding Power Requirements in RS-232 Applications (Rev. B) | 2013年 4月 26日 | ||
| Application note | Removing Ground Noise in Data Transmission Systems | 2007年 10月 5日 | ||
| More literature | RS-232 IEC ESD-Protected Devices From TI (Rev. A) | 2007年 7月 27日 | ||
| Application note | Interface Circuits for TIA/EIA-232-F (Rev. A) | 2002年 9月 19日 | ||
| Application note | Low-Voltage, Single-Supply 232-Standard Interface Solutions (Rev. A) | 2000年 9月 19日 |
設計與開發
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TRS3221RGTEVM — 具有 ESD 保護功能的 TRS3221EIRGTR 多通道 RS-232 線路驅動器/接收器評估模組
This evaluation module is used to evaluate the TRS3221E or TRSF3221E with RGT package. All signals are available through headers and test points. The charge pump output V+ and V- are accessible too. The board interfaces data and control CMOS logic levels on the terminal block to RS-232 levels (...)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
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 |
|---|---|---|
| SSOP (DB) | 16 | Ultra Librarian |
| TSSOP (PW) | 16 | Ultra Librarian |
| VQFN (RGT) | 16 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。