• Product introduction

TRS3223E

3V to 5.5V multichannel RS-232 line driver/receiver with +/-15kV IEC ESD protection

characteristic

• ESD protected RS-232 bus pins
  • ± 15 kV Human Body Model (HBM)
  • ± 8 kV compliant with IEC61000 - 4 - 2 contact discharge
  • ± 15 kV in accordance with IEC61000 - 4 - 2 air gap discharge
• Meet or exceed the requirements of the TIA/EIA-232-F standard and ITU Section 28
• V operation, 3 to 5.5 dimensions_{Consumer Council}supply
• Available in up to 500 kbit/s
• Two drivers and two receivers
• Low standby current. 。 。 1μA typical
• External capacitors. 。 。 4 × 0.1 μF
• Accepts a 5 - V supply voltage logic input of 3.3 V
• Replaces the TRSF3223E for a high-speed PIN-compatible device (1 MB/s).
• apply
  • Battery-powered system
  • Pocket PC
  • laptop
  • laptop
  • Pocket PC
  • Handheld devices

Illustrate/
Ordering Information

The TRS3223E consists of two line drivers, a two-wire receiver and a dual charge pump with ± 15-kV ESD protection PIN-to-PIN (serial port connection pin, including ground) circuitry. The device meets the requirements of TIA/EIA-232-F and provides an electrical interface between the asynchronous communication controller and the serial port connector. A charge pump and four small external capacitors allow operation from a single 3 V supply to 5.5 V. The device operates at typical data signal transfer rates up to 500 kbit/s and a 30-V/μs driver output slew rate is maximum.

When the flexible control option for power management, the serial port is not valid. The automatic power saving function functions when FORCEON is low，FORCEOFFHigh. In this mode of operation, the driver output is disabled if the device does not give a valid RS-232 signal. IfFORCEOFFSet low, EN is high, both drivers and receivers are turned off, and the supply current is reduced to 1 mA. Disconnecting or closing the peripheral drive of the serial port causes automatic power off to occur. FORCEON CAN BE DISABLED AND WHEN AUTOMATIC POWER OFF IS POSSIBLEFORCEOFFVery high. With an automatic power-down feature, the device is an active start-up that automatically adapts to any signal receiver input. voidThe output is used to notify the user if an RS-232 signal appears at any receiver input.voidHigh (valid data) if any receiver input voltage is greater than 2.7 V or less than -2.7 volts, or has been associated with -0.3 V or 0.3 V microseconds less than 30.voidIf the receiver input voltage is between -0.3 V or 0.3 V for more than 30 seconds (invalid data), the receiver input voltage. Refer to Figure 4 receiver input levels.