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


Package | PIN: PW | 28
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $1.99
10-24 $1.78
25-99 $1.66
100-249 $1.44
250-499 $1.33
500-749 $1.12
750-999 $0.92
1000+ $0.84


  • Operates With 3-V to 5.5-V VCC Supply
  • Single-Chip and Single-Supply Interface
    for IBM® PC/AT Serial Port
  • RS-232 Bus-Pin ESD Protection of
    ±15 kV Using Human-Body Model (HBM)
  • Meets or Exceeds the Requirements of
    TIA/EIA-232-F and ITU V.28 Standards
  • Three Drivers and Five Receivers
  • Operates up to 250 kbps
  • Low Active Current: 300-µA Typical
  • Low Standby Current: 1-µA Typical
  • External Capacitors: 4 × 0.1 µF
  • Accepts 5-V Logic Input With 3.3-V Supply
  • Always-Active Noninverting Receiver
    Output (ROUT2B)
  • Operating Temperature
    • TRS3243C: 0°C to 70°C
    • TRS3243I: –40°C to 85°C
  • Serial-Mouse Driveability
  • Automatic Power-Down Feature to
    Disable Driver Outputs When
    No Valid RS-232 Signal Is Sensed

Texas Instruments  TRS3243IPW

The TRS3243 device consists of three line drivers, and five line receivers, which is ideal for DE-9 DTE interface. A ±15-kV ESD (HBM) protection pin-to-pin (serial-port connection pins, including GND). Flexible power features save power automatically. Special outputs ROUT2B and INVALID are always enabled to allow checking for ring indicator and valid RS232 input.