TRSF3222EIPWR

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TRSF3222EIPWR

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

Packaging

Package | PIN: PW | 20
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.60
10-24 $2.33
25-99 $2.17
100-249 $1.89
250-499 $1.74
500-749 $1.46
750-999 $1.20
1000+ $1.10

Features

  • ESD Protection for RS-232 Bus Pins
    • ±15-kV Human-Body Model (HBM)
    • ±8-kV IEC 61000-4-2, Contact Discharge
    • ±15-kV IEC 61000-4-2, Air-Gap Discharge
  • 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 1000 kbit/s
  • Two Drivers and Two Receivers
  • Low Standby Current . . . 1 µA Typ
  • External Capacitors . . . 4 × 0.1 µF
  • Accepts 5-V Logic Input With 3.3-V Supply
  • APPLICATIONS
    • Battery-Powered Systems
    • PDAs
    • Notebooks
    • Laptops
    • Palmtop PCs
    • Hand-Held Equipment

Texas Instruments  TRSF3222EIPWR

The TRSF3222E 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 TRSF3222E 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 TRSF3222E operates at typical data signaling rates up to 1000 kbit/s and is an improved drop-in replacement for industry-popular '3222 two-driver, two-receiver functions.

The TRSF3222E can be placed in the power-down mode by setting the power-down (PWRDOWN) input low, which draws only 1 µA from the power supply. When the device is powered down, the receivers remain active while the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is disabled; V+ is lowered to VCC, and V- is raised toward GND. Receiver outputs also can be placed in the high-impedance state by setting enable (EN) high.