TRS3221
- RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM) - 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 kbps
- One Driver and One Receiver
- 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 Mbps)- SNx5C3221
- Automatic Power-Down Feature Automatically
Disables Drivers for Power Savings
The TRS3221 device consists of one line driver, one line receiver with dedicated enable pin, and a dual charge-pump circuit with ±15-kV ESD protection pin-to-pin (serial-port connection pins, including GND). 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 one 3-V to 5.5-V supply. The TRS3221 device operates at data signaling rates up to 250 kbps 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 automatic power-down 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 and the supply current is reduced to 1 µA. The INVALID output notifies the user if an RS-232 signal is present at the receiver input.
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 | TRS3221 3-V to 5.5-V RS-232 Line Driver and Receiver With ±15-kV ESD Protection 数据表 (Rev. A) | PDF | HTML | 2015-6-29 |