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Home >> Products >> I/O Connectivity ICs >> RS-232/RS-485 Transceivers >> 3V RS232 Transceiver >> ZT3241E

 ZT3241E -- Low Power +3V to +5.5V, 3D/5R 250Kbps RS232 Transceivers (Features 28-pin)

The ZT3243E Series devices are 3V powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements. They consist of three line drivers, five line receivers and the proprietary switch-capacitor regulated voltage converters. These devices operate from a single 3V to 5.5V power supply at the guaranteed data rate of 250K bits/sec with enhanced electrostatic discharge (ESD) protection in all RS232 I/O pins exceeding ±15kV IEC61000-4-2 Air Gap Discharge and ±8kV IEC61000-4-2 Contact Discharge.

The ZT3243E Series feature the AUTOGREEN (patent pending) proprietary function which automatically powers down the on-chip regulated voltage converters and driver circuits when an RS-232 cable is disconnected from the host interface or when a connected peripheral device is turned off.


  • Meets or Exceeds the EIA/TIA-232F and CCITT V.28/V.24 Specifications for Vcc at +3.3V ±10% and +5V ±10% Operations
  • Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source
  • Low quiescent current – 0.5mA typ., 1mA max
  • Low shutdown current (where applicable) - 1µA typical, 10µA max
  • Guaranteed data rate 250Kbps
  • Proprietary Switch-Capacitor Regulated Voltage Converters (patent pending)
  • Proprietary AUTOGREEN Power Saving (patent pending)
  • Latch-up Free
  • ESD Protection for RS-232 I/O’s
    • ±15kV Human Body Model (HBM)
    • ±15kV IEC61000-4-2 Air Gap Discharge
    • ±8kV IEC61000-4-2 Contact Discharge
  • Drop-in Replacements for MAX3243E, ICL3243E, ISL4243E, ST3243E and SP3243E
  • High Data Rate at 1000Kbps Available on ZT3243F Series
Target Applications:
  • Battery-Powered And Hand-Held Applications
  • Notebooks, Subnotebooks, and Palmtops
  • Industrial and Embedded PCs
  • Data Cables for Cell Phones and PDAs
  • Terminal Adapters and POS terminals
  • Peripherals interface
  • Routers and HUBs

 Pin Configuration and Application Diagram


 Selection Guide


Technical Documentation

 Product Brief, Product Introduction and Datasheet

ZT3241E Brief220.4 KB2015-04-30
ZT3241E Datasheet 1.5 MB2017-09-05

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