MAX3313EUB

Overview

The MAX3313EUB is a low-power, +5V EIA/TIA-232-compatible transceiver featuring one transmitter and one receiver. It operates from a single +5V supply using a proprietary low-dropout output stage and a single inverting charge pump requiring only three 0.1µF capacitors. The device supports data rates up to 460kbps while maintaining RS-232-compatible output levels. Key electrical parameters include a supply voltage range of 4.5V to 5.5V, typical supply current of 250µA, and an operating temperature range of -40°C to +85°C. It is housed in a 10-pin µMAX package.

Feature Summary

• INVALID Output: Asserts high when an active RS-232 cable signal is connected, signaling host connection status.
• Single Transceiver Design: Integrates one transmitter and one receiver in a compact 10-pin µMAX package.
• RS-232 Compatibility: Ensures compliant output levels from a single +5V supply with minimal external components.

Applications

• Digital Cameras
• PDAs
• GPS Devices
• POS Systems
• Telecommunications Handsets

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm temperature grade and packaging type. Ensure compatibility with system power requirements and interface standards before integration. Cross-reference part numbers with manufacturer databases to avoid counterfeit components.

Selection Notes

Select this component for applications requiring full-duplex RS-232 communication at speeds up to 460kbps. It is suitable for space-constrained designs due to its small footprint. Consider the INVALID pin functionality if peripheral connection detection is required by the host system.

Part Context

The MAX3313EUB belongs to the MAX331x family of low-power RS-232 transceivers. It shares architectural similarities with the MAX3311 but includes the INVALID output feature for port monitoring. Both devices utilize a single charge pump for voltage inversion.

Replacement Considerations

The MAX3311EUB is a functional substitute within the same family, differing primarily by the absence of the INVALID output pin. Verify pin compatibility and software logic adjustments when substituting between these variants.

FAQ

What is the function of the INVALID pin on the MAX3313?

The INVALID output asserts high when an active RS-232 cable signal is detected at the receiver input, indicating that a peripheral is connected to the communication port.

How many external capacitors are required for operation?

The device requires only three 0.1µF capacitors: one for the charge pump flying capacitor (C1), one for the reservoir capacitor (C2), and one for VCC bypass.

Does the receiver remain active during shutdown mode?

No, the MAX3313 does not have a shutdown mode where the receiver remains active; this feature is specific to the MAX3311 variant.