3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver With +/-15-kV ESD Protection - TRS3221

TRS3221 (ACTIVE)

3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver With +/-15-kV ESD Protection

Recommended alternative parts

  • TRS3222E  -  This device has a higher channel count, IEC 61000-4-2 protection, and a higher data rate.
  • TRS3222  -  This device has a higher channel count, and a higher data rate.

Description

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.

Features

  • 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

View more

Parametrics Compare all products in RS-232 Transceivers

 
Drivers Per Package
Receivers Per Package
ESD HBM (kV)
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
Rating
Power Saving Feature
IEC-61000-4-2 SUPPORT
TRS3221 TRS3221E
1     1    
1     1    
15     15    
-40 to 85
0 to 70    
-40 to 85
0 to 70    
16SSOP
16TSSOP    
16SSOP
16TSSOP    
0.65 | 1ku     0.65 | 1ku    
Catalog     Catalog    
Auto-Powerdown     Auto-Powerdown    
   

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