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RS-232 收發器

TRS3221

現行

具 +/-15-kV ESD 保護的 3V 至 5.5-V 單通道 250kbps RS-232 線路驅動器/接收器

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TRS3221E 現行 具 +/-15-kV IEC-ESD 保護的 3V 至 5.5-V 單通道 250kbps RS-232 線路驅動器/接收器 TI recommends the TRS3221E in new designs. The TRS3221E is an improved direct drop-in replacement for the TRS3221.

TRS3221

現行
產品規格表 立即訂購

產品詳細資料

Drivers per package 1 Receivers per package 1 Logic voltage (min) (V) 3.3 Data rate (max) (Mbps) 0.25 Main supply voltage (nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
Drivers per package 1 Receivers per package 1 Logic voltage (min) (V) 3.3 Data rate (max) (Mbps) 0.25 Main supply voltage (nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
TSSOP (PW) 16 32 mm² 5 x 6.4
  • 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
  • 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.

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.
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類型 標題 日期
* Data sheet TRS3221 3-V to 5.5-V RS-232 Line Driver and Receiver With ±15-kV ESD Protection datasheet (Rev. A) PDF | HTML 2015年 6月 29日
Certificate TRS3221RGTEVM EU RoHS Declaration of Conformity (DoC) 2020年 12月 8日
Application note RS-232 Frequently Asked Questions 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
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

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