MaxLinear SP3222E & SP3232E RS-232 Transceivers

MaxLinear SP3222E and SP3232E RS-232 Transceivers are intended for portable or hand-held applications such as notebooks or palmtop computers. The SP3222E and SP3232E have a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the these transceivers to deliver true RS-232 performance from a single power supply ranging from 3.0V to 5.5V. The MaxLinear SP3222E and SP3232E are 2-driver/2-receiver devices. This series is ideal for portable or hand-held applications such as notebooks or palmtop computers. 

The ESD tolerance of the SP3222E and SP3232E devices is over ±15kV for both the Human Body Model and IEC61000-4-2 Air discharge test methods. The SP3222E device has a low-power shutdown mode where the devices’ driver outputs and charge pumps are disabled. During a shutdown, the supply current falls to less than 1µA.

The MaxLinear SP3222E and SP3232E RS-232 Transceivers are available in SSOP, TSSOP, and SOIC package options for design flexibility.  

Features

  • Meets true EIA/TIA-232-F standards from a 3.0V to 5.5V power supply
  • Minimum 120kbps data rate under full load
  • 1μA low power shutdown with receivers active (SP3222E)
  • Interoperable with RS-232 down to a 2.7V power source
  • Enhanced ESD specifications
    • ±15kV Human Body Model
    • ±15kV IEC61000-4-2 Air Discharge
    • ±8kV IEC61000-4-2 Contact Discharge

Applications

  • Notebook and laptop computers
  • Tablets
  • Portable media players
  • Handheld devices

Typical Operating Circuits

Publicado: 2021-06-09 | Actualizado: 2022-03-11