MAX3313CUB+

Overview

The MAX3313CUB+ is a single RS-232 transceiver in a 10-pin µMAX package. It operates from a +4.5V to +5.5V supply with a typical current of 250µA. The device supports data rates up to 460kbps and features a proprietary low-dropout transmitter output stage. It includes an INVALID output that asserts high when an active RS-232 cable signal is connected. The operating temperature range is 0°C to +70°C.

Feature Summary

• INVALID Output for port status detection
• Single Transceiver (1Tx/1Rx) configuration
• RS-232-Compatible Operation

Applications

• Digital Cameras
• PDAs
• GPS
• POS
• Telecommunications
• Handy Terminals
• Set-Top Boxes

Procurement Notes

Verify the component matches the specific C suffix for commercial temperature range (0°C to +70°C). Confirm the package type is 10-pin µMAX. Ensure the part number includes the '+' suffix if lead-free compliance is required by the assembly process. Cross-reference the manufacturer designation with Analog Devices or Maxim Integrated sources.

Selection Notes

Select this component for applications requiring a single-channel RS-232 interface with minimal external components. The MAX3313 is suitable where detecting cable connection status via the INVALID pin is necessary. It differs from the MAX3311, which offers a shutdown mode instead of the INVALID feature. Ensure the system operates within the specified voltage and temperature limits.

Part Context

The MAX3313 is part of the MAX3311-MAX3313 family of low-power, +5V EIA/TIA-232-compatible transceivers. These devices utilize a single inverting charge pump to generate negative voltages from a +5V supply. The family shares similar electrical characteristics but varies in features like shutdown modes or invalid signal detection.

Replacement Considerations

MAX3311CUB+

FAQ

What is the function of the INVALID output?

The INVALID output asserts high when an active RS-232 cable signal is connected, signaling to the host that a peripheral is connected to the communication port.

How many 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 bypassing VCC.

What is the maximum data rate supported?

The MAX3313 supports data rates up to 460kbps while maintaining RS-232-compatible output levels.