Product details

Drivers per package 3 Receivers per package 5 Logic voltage (Min) (V) 3.3 Data rate (Max) (kbps) 250 Main supply voltage (Nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 Vout (Typ) (V) 5.4
Drivers per package 3 Receivers per package 5 Logic voltage (Min) (V) 3.3 Data rate (Max) (kbps) 250 Main supply voltage (Nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 Vout (Typ) (V) 5.4
SSOP (DB) 28 54 mm² 5.3 x 10.2 TSSOP (PW) 28 62 mm² 9.7 x 6.4
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet TRS3243 3-V to 5.5-V Multichannel RS-232 Line Driver and Receiver With ±15-kV ESD (HBM) Protection datasheet (Rev. B) 26 Jun 2015
Application note RS-232 Frequently Asked Questions 10 Nov 2020
Application note AN-438 Low Power RS-232C Driver and Receiver in CMOS (Rev. B) 26 Apr 2013
Application note Understanding Power Requirements in RS-232 Applications (Rev. B) 26 Apr 2013
Application note Removing Ground Noise in Data Transmission Systems 05 Oct 2007
Application note Interface Circuits for TIA/EIA-232-F (Rev. A) 19 Sep 2002
Application note Low-Voltage, Single-Supply 232-Standard Interface Solutions (Rev. A) 19 Sep 2000

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SSOP (DB) 28 View options
TSSOP (PW) 28 View options

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