SP3232EBEY-L

Drivers, Receivers, Transceivers Overview

The MaxLinear SP3232EBEY-L is a true RS-232 transceiver designed for portable applications. It operates from a single 3.0V to 5.5V power supply and features two drivers and two receivers. The device utilizes an internal charge pump requiring only four 0.1µF external capacitors. It supports data rates up to 235kbps with full load conditions. ESD protection ratings include ±15kV Human Body Model, ±15kV IEC61000-4-2 Air Discharge, and ±8kV Contact Discharge. The component is housed in a 16-pin TSSOP package and functions within a temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated on-board charge pump generates symmetrical ±5.5V supplies from a single low-voltage source using minimal external components.
• High electrostatic discharge tolerance protects driver outputs and receiver inputs against transient events without latch-up.
• Receivers incorporate hysteresis to maintain signal integrity on noisy transmission lines and prevent false triggering.

Drivers, Receivers, Transceivers Applications

• Portable and hand-held computing devices such as notebook or palmtop computers
• Battery-powered systems requiring extended operational life through efficient power management
• Mixed voltage environments connecting 3.3V logic interfaces to standard RS-232 peripherals

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'BEY' corresponds to the required 16-pin TSSOP package and industrial temperature grade (-40°C to +85°C). Confirm that the lead-free designation aligns with project environmental compliance requirements. Ensure ordering documentation matches the exact part number to avoid confusion with similar variants in the SP3232E series.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single-supply RS-232 interface is needed for space-constrained designs. The absence of a shutdown pin distinguishes it from the SP3222E variant; use this model if continuous operation is preferred over low-power standby modes. Verify that the 16-pin TSSOP footprint fits the target PCB layout constraints.

Drivers, Receivers, Transceivers Part Context

This device belongs to the SP3232E series, which provides 2-driver and 2-receiver configurations. It is distinct from the SP3222E series, which includes a shutdown control feature. The SP3232E series focuses on providing true RS-232 performance from low-voltage supplies without additional control pins for power saving.

Drivers, Receivers, Transceivers Replacement Considerations

• SP3232EEY-L/TR

Drivers, Receivers, Transceivers FAQ

Does the SP3232EBEY-L support a shutdown mode?

No, the SP3232E series does not include a shutdown pin. Only the SP3222E series offers a low-power shutdown mode.

What is the minimum 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.

How does the receiver handle noisy signals?

The receivers feature typical hysteresis of 300mV, which helps ensure immunity to noise on transmission lines.