SP3232ECY-L

Drivers, Receivers, Transceivers Overview

The SP3232ECY-L is a MaxLinear RS-232 transceiver in a 16-pin TSSOP package, operating from 0°C to +70°C. It features two drivers and two receivers with full-duplex communication at data rates up to 235 kbps under light loads, guaranteed at 120 kbps under full load (3kΩ || 1000pF). Powered by a single 3.0V to 5.5V supply, it utilizes an internal charge pump generating ±5.5V using four external 0.1µF capacitors. The device provides enhanced ESD protection of ±15kV HBM and ±15kV IEC air discharge. Typical supply current is 1.0 mA, with driver output short-circuit current reaching 60 mA.

Drivers, Receivers, Transceivers Feature Summary

• Complies with true EIA/TIA-232-F standards using a single low-voltage power supply
• Integrates a high-efficiency proprietary charge pump requiring only 0.1µF external capacitors
• Provides robust electrostatic discharge tolerance exceeding ±15kV across multiple testing methods
• Features receiver inputs with hysteresis for noise immunity on transmission lines

Drivers, Receivers, Transceivers Applications

• Portable or hand-held applications such as notebook or palmtop computers
• Battery-powered systems requiring true RS-232 performance without dual supplies
• Mixed 3.3V to 5.5V system interfaces
• PC-to-PC communication peripherals and LAN applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CY' corresponds to the 16-pin TSSOP tube packaging configuration. Confirm the operating temperature range is commercial grade (0°C to +70°C) rather than industrial (-40°C to +85°C). Ensure the design accounts for the absence of a shutdown pin, as this variant lacks the low-power sleep mode found in the SP3222E series.

Drivers, Receivers, Transceivers Selection Notes

Select the SP3232ECY-L when a fixed 16-pin TSSOP footprint is required for commercial temperature ranges. This part lacks the shutdown control present in the SP3222E; therefore, it is suitable for designs where continuous operation is preferred over battery-saving sleep modes. Verify that the application does not require the active-receiver-in-shutdown feature unique to the SP3222E family.

Drivers, Receivers, Transceivers Part Context

This component belongs to the SP3232E series, which consists of 2-driver/2-receiver RS-232 transceivers. Unlike the SP3222E, the SP3232E does not include a shutdown pin, resulting in a standard 16-pin configuration. The ECY suffix specifically denotes the commercial temperature range and TSSOP tube packaging format within the broader product line.

Drivers, Receivers, Transceivers Replacement Considerations

SP3232ECN-L: Identical electrical specifications but housed in a 16-pin NSOIC tube package.

Drivers, Receivers, Transceivers FAQ

Does the SP3232ECY-L support a low-power shutdown mode?

No, the SP3232E series does not have a shutdown pin. Only the SP3222E variant includes a shutdown control input to reduce supply current.

What is the maximum data rate supported by this device?

The device guarantees a minimum data rate of 120 kbps under full load conditions. It can operate at typical rates up to 235 kbps when lightly loaded.

How many external capacitors are required for the charge pump?

Four external capacitors are required. For 3.3V operation, these can be as small as 0.1µF.