TRS3223QPWRQ1

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TRS3223QPWRQ1

Automotive Catalog 3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver With +/- 15-kV ESD

Packaging

Package | PIN: PW | 20
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.42
10-24 $2.17
25-99 $2.02
100-249 $1.76
250-499 $1.62
500-749 $1.36
750-999 $1.12
1000+ $1.02

Features

  • Qualified for Automotive Applications
  • 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 kbit/s
  • Two Drivers and Two Receivers
  • Low Standby Current . . . 1 µA Typical
  • External Capacitors . . . 4 × 0.1 µF
  • Accepts 5-V Logic Input With 3.3-V Supply

Texas Instruments  TRS3223QPWRQ1

The TRS3223 consists of two line drivers, two line receivers, 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 a single 3-V to 5.5-V supply. The device operates at data signaling rates up to 250 kbit/s 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 auto-powerdown 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, the driver outputs are disabled. If FORCEOFF is set low and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to any receiver input. The INVALID output is used to notify the user if an RS-232 signal is present at any receiver input. INVALID is high (valid data) if any receiver input voltage is greater than 2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than 30 µs. See Figure 4 for receiver input levels.