15kV ESD protected 3 to 5.5V, 400kbps, RS-232 transceiver with auto power-down

Quantity $ per Unit Savings
1 - 9$5.610%
10 - 24$5.0410%
25 - 99$4.7615%
100 - 120$4.1326%
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Parameter NameParameter Value
Operating RangeIndustrial
Supply Voltage Min Volt3.0
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
Packing TypeTape And Reel
RoHs compliantEcopack3
Package NameSSOP 28 10.2x5.3

The ST3241E device consists of 3 drivers, 5 receivers, and a dual charge-pump circuit. The device meets the requirements of EIA/TIA and V.28/V.24 communication standards providing high data rate capability and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±8 kV using IEC 1000-4-2 contact discharge and ±15 kV using the human body model. The receiver R2 is always active to implement a wake-up feature for the serial port.

The ST3241E has a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0 V to 5.5 V supply with a dual charge pump. The device is guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels.

It is a complete serial port (3 drivers, 5 receivers) intended for notebook or sub-notebook computers. Receivers R1 and R2 have extra outputs in addition to their standard outputs. These extra outputs are always active.

Typical applications are in notebooks, sub-notebooks, palmtop computers, battery-powered equipment, hand-held equipment, peripherals, and printers.

Key features
  • ESD protection for RS-232 I/O pins: ±8 kV IEC 1000-4-2 contact discharge ±15 kV human body model
  • 1 µA supply current achieved when in auto power-down
  • 250 kbps minimum guaranteed data rate
  • Guaranteed 6 V/µs slew rate range
  • Guaranteed mouse drive ability
  • 0.1 µF external capacitors
  • Meets EIA/TIA-232 specifications down to 3 V
  • Available in SSOP 28 package