ST3243EBJR

Drivers, Receivers, Transceivers Overview

The ST3243EBJR is a low-power RS-232 transceiver manufactured by STMicroelectronics, featuring three drivers and five receivers. It operates within a supply voltage range of 3.0 V to 5.5 V and supports data rates up to 250 kbps. The device incorporates an auto power-down feature that reduces supply current to 1 µA when no valid signal is detected. It provides enhanced ESD protection rated at ±8 kV for IEC contact discharge and ±15 kV for the human body model. The component utilizes a dual charge pump circuit requiring only 0.1 µF external capacitors and is housed in a TSSOP-28 package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated auto power-down functionality that minimizes supply current consumption during idle states
• Robust electrostatic discharge protection on all RS-232 input and output pins
• Low-voltage operation capability enabled by a proprietary low-dropout transmitter stage
• Simplified design requirements through the use of minimal external capacitance

Drivers, Receivers, Transceivers Applications

• Notebook and subnotebook computer serial ports
• Battery-powered handheld equipment and palmtop computers
• Peripherals and printers with serial interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix against official STMicroelectronics documentation to confirm pin compatibility and thermal characteristics. Ensure the ordering information matches the required package type and temperature grade. Cross-reference the manufacturer's latest datasheet to validate RoHS compliance status and any recent process change notifications before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring full duplex RS-232 communication with low standby power consumption. The integrated wake-up receiver allows the system to remain dormant until a valid signal is present. Verify that the application environment stays within the specified operating temperature range and that the available external capacitor space accommodates the required 0.1 µF values for the charge pump circuit.

Drivers, Receivers, Transceivers Part Context

This part belongs to the ST3243E series of RS-232 transceivers designed for portable electronics. The series emphasizes low power consumption and high reliability in compact form factors. It serves as a standard interface solution for connecting microcontrollers or processors to legacy serial devices while maintaining compatibility with EIA/TIA-232 standards.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the ST3243EC and ST3243C from STMicroelectronics, which share identical functional specifications and pinouts. Other manufacturers offer equivalent parts such as the MAX3243, but verification of electrical parameters and package dimensions is required to ensure mechanical and electrical compatibility.