MAX3389ECUG+

Overview

The MAX3389ECUG+ is a 2.5V-powered RS-232 transceiver featuring three transmitters and two receivers in a 24-pin TSSOP package. It supports data rates up to 460kbps with a typical supply current of 300µA and 1µA shutdown current. The device includes an internal 62Ω power switch, logic-level I/O active during shutdown, and ±15kV ESD protection on all RS-232 pins. Operating from +2.35V to +3.0V, it utilizes a dual charge pump requiring four 0.1µF capacitors.

Feature Summary

• Integrated logic-level I/O for hot-sync applications that remains active during shutdown mode
• Internal power switch for controlling external circuitry or modules
• VL pin enabling compatibility with mixed-voltage systems and low-voltage core logic

Applications

• Subnotebook and palmtop computers
• PDAs and PDA cradles
• Cell phone data cables
• Battery-powered equipment and handheld peripherals

Procurement Notes

Verify the component against official Analog Devices documentation to confirm the specific suffix matches the required temperature range and RoHS compliance status. Ensure the ordering information aligns with current manufacturing specifications before procurement.

Selection Notes

Select this model when mixed-voltage system compatibility is required due to the VL pin feature. Choose the MAX3389 variant over the MAX3388 specifically if logic-level handshaking I/O must remain functional while the device is in shutdown mode.

Part Context

This component belongs to the MAX3388E/MAX3389E family of low-voltage RS-232 transceivers designed for portable electronics. It shares the same physical package and core interface capabilities as the MAX3388E, differentiated primarily by the behavior of its additional logic-level I/O pins during power-down states.

Replacement Considerations

Public confirmed substitute part numbers: MAX3388ECUG+