TRSF3223E

• Product introduction

TRSF3223E 3V to 5.5V multichannel RS-232 line driver/receiver

characteristic

• ESD protected RS-232 bus pins
  • ± 15 kV Human Body Model (HBM)
  • ± 8 kV contact discharge according to IEC 61000-4-2
  • ± 15 kV in accordance with IEC 61000-4-2 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 at up to 1000 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
• apply
  • Battery-powered system
  • Pocket PC
  • laptop
  • laptop
  • Pocket PC
  • Handheld devices

Description/Ordering Information

The TRSF3223E 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. This 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 TRSF3223E rate of the operating signal is up to 1000 kbit/s typical data

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 automatic power saving, the unit automatically activates an active signal that is suitable for any 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.