TRSF3221E
- ESD protection for RS-232 pins
- ±15kV Human-body model (HBM)
- ±8kV IEC 61000-4-2 Contact discharge
- ±15kV IEC 61000-4-2 Air-gap discharge
- Operates with 3V to 5.5V VCC supply
- Operates up to 1Mbit/s
- Low-speed pin-compatible device (250kbit/s) – TRS3221E
- Available in near chip-scale package, 16-pin VQFN (RGT, 82% smaller than TSSOP package)
- Low standby current: 1µA typical
- External capacitors : 4 × 0.1µF
- Accepts 5V logic input with 3.3V supply
- Auto-powerdown feature automatically disables drivers for power savings
The TRSF3221E consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15kV IEC ESD protection pin to pin (serial-port connection pins, including GND). The TRSF3221E 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 3V to 5.5V supply. The TRSF3221E operates at data signaling rates up to 1Mbit/s and a driver output slew rate of 24V/µs to 150V/µs.
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 TRSF3221E does not sense a valid RS-232 signal on the receiver input, the driver output is disabled. If FORCEOFF is set low and the enable (EN) input is high, both the driver and receiver are shut off, and the supply current is reduced to 1µA. 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 2.7V or less than –2.7V, or has been between –0.3V and 0.3V for less than 30µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3V and 0.3V for more than 30µs. See Figure 6-5 for receiver input levels.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TRSF3221E 3V to 5.5V Single-Channel RS-232 1Mbit Line Driver and Receiver With ±15kV IEC ESD Protection in Small Package datasheet (Rev. C) | PDF | HTML | 2024年 12月 10日 |
More literature | RS-232 IEC ESD-Protected Devices From TI (Rev. A) | 2007年 7月 27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。