SP3232EUEN-L

Drivers, Receivers, Transceivers Overview

The SP3232EUEN-L is a MaxLinear RS-232 transceiver featuring two drivers and two receivers. It operates from a single 3.0V to 5.5V supply, utilizing an internal charge pump to generate ±5.5V levels. The device supports data rates up to 120kbps under full load (RL=3kΩ, CL=1000pF) and 235kbps when lightly loaded. Key electrical parameters include a typical supply current of 1.0mA, driver output short-circuit current of +60mA maximum, and propagation delays of 1.0µs for drivers and 0.3µs for receivers. It provides enhanced ESD protection rated at ±15kV Human Body Model and ±8kV IEC contact discharge.

Drivers, Receivers, Transceivers Feature Summary

• Integrates a high-efficiency proprietary charge pump requiring only four 0.1µF external capacitors for operation.
• Delivers true EIA/TIA-232-F compliance with symmetrical ±5.5V outputs derived from a single low-voltage power source.
• Features ruggedized ESD protection cells on all pins to withstand harsh electrostatic environments.

Drivers, Receivers, Transceivers Applications

• Portable and handheld computing devices such as notebook or palmtop computers.
• Battery-powered systems requiring low-power serial communication interfaces.
• Mixed voltage systems interfacing 3.3V logic with standard RS-232 peripherals.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant corresponding to the 'UEN' suffix against the manufacturer's official ordering guide. Confirm that the required operating temperature range matches the industrial grade specifications if deployed in non-standard thermal environments. Ensure external capacitor values align with the datasheet recommendations for optimal charge pump performance.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex RS-232 communication without a shutdown control pin. Unlike the SP3222E series, this device lacks a low-power shutdown mode; therefore, it is suitable for designs where continuous receiver monitoring or constant active state is preferred over minimal standby current consumption.

Drivers, Receivers, Transceivers Part Context

This part belongs to the SP3232E family of True 3V to 5.5V RS-232 Transceivers. It serves as a direct functional replacement for legacy MAX232-type devices but offers improved efficiency through integrated charge pump technology. The family includes variants with different packaging options and temperature ratings to suit various form factors.

Drivers, Receivers, Transceivers Replacement Considerations

SP3232EEN-L

Drivers, Receivers, Transceivers FAQ

Does the SP3232EUEN-L support a shutdown mode?

No, the SP3232E series does not feature a shutdown control input. Only the SP3222E variant within the same family includes a shutdown mode to reduce power consumption.

What is the minimum external capacitance required for the charge pump?

The device requires four external capacitors, typically 0.1µF each, connected to the C1+, C1-, C2+, and C2- pins to generate the necessary ±5.5V supply rails.

How does the device handle unconnected receiver inputs?

An internal 5kΩ pulldown resistor to ground ensures that any unconnected receiver input commits the output to a HIGH state, preventing floating signal issues.