TRS3222E

• Product introduction

TRS3222E 3V to 5.5V multichannel RS-232 line driver/receiver with +/-15kV 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
• Replace high-speed PIN-compatible devices (1 megabit/s) TRS3222E
• apply
  • Battery-powered system
  • Pocket PC
  • laptop
  • laptop
  • Pocket PC
  • Handheld devices

Description/Ordering Information

The TRS3222E 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.

The TRS3222E can be placed in power-down mode by setting power-down（PWRDOWN）The input is low, consuming only 1 microamp from the power supply. When the device is powered off, the receiver remains active while the driver is in a high-impedance state. In addition, the built-in charge pump is disabled in the event of a power failure; Lower for V+_arriveV CC and V - is the GND raised. The receiver output can also be placed in a high impedance state and enabled by setting（EN）High.