MAX3313EUB+T

Overview

The MAX3313EUB+T is a low-power, single-channel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a +5V supply and supports data rates up to 460kbps. The device integrates a single inverting charge pump requiring only three 0.1µF capacitors for operation. Key electrical parameters include a supply voltage range of 4.5V to 5.5V, a typical supply current of 250µA, and an operating temperature range of -40°C to +85°C. It features an INVALID output that asserts high when active RS-232 cable signals are detected.

Feature Summary

• INVALID Output: Asserts high when an active RS-232 cable signal is connected, signaling host connection status.
• Single Charge-Pump Design: Utilizes a proprietary low-dropout transmitter stage with a single inverting charge pump for simplified external component requirements.
• RS-232 Compatibility: Maintains EIA/TIA-232-compatible output levels while converting CMOS logic levels.

Applications

• Digital Cameras
• GPS Systems
• Point-of-Sale (POS) Terminals
• Telecommunications Equipment

Procurement Notes

Verify the ordering suffix '+T' corresponds to tape-and-reel packaging as specified in official documentation. Confirm the 'E' suffix indicates the extended industrial temperature range (-40°C to +85°C). Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability. Cross-reference the manufacturer part number MAX3313EUB+T with the specific datasheet revision to confirm pinout and electrical characteristics match the design requirements.

Selection Notes

Select this component for applications requiring a single full-duplex RS-232 channel in a compact 10-pin µMAX package. It is suitable for systems needing an INVALID signal to detect cable presence without additional logic. Compare against the MAX3311 if shutdown mode functionality is required instead of the INVALID feature. Ensure the system power supply remains within the 4.5V to 5.5V range and that external capacitor values meet the minimum 0.1µF requirement for the charge pump.

Part Context

The MAX3313 is part of the MAX3311/MAX3313 family of low-power RS-232 transceivers. While the MAX3311 includes a shutdown pin for power reduction, the MAX3313 replaces this with an INVALID output for port monitoring. Both share identical pinouts and electrical performance except for these functional differences. The E-series variants are designated for industrial temperature ranges, distinguishing them from the C-series commercial grade parts.

Replacement Considerations

The MAX3311EUB+T is a direct pin-compatible alternative within the same family, differing primarily by offering a shutdown mode instead of the INVALID output. Other single-channel RS-232 transceivers may require different external capacitor configurations or offer varying data rate capabilities. Verify package compatibility (10-pin µMAX) and thermal specifications before substitution.