MAX3314EUA+

Overview

The MAX3314EUA+ is a single-channel RS-232 transceiver designed for ±5V dual-supply operation. It features one transmitter and one receiver in a flow-through architecture, guaranteeing data rates up to 460kbps with worst-case loads of 3kΩ parallel to 1000pF. The device provides minimum ±3.7V output levels while consuming only 30µA during active operation. A shutdown function reduces supply current to 1µA by disabling the transmitter into a high-impedance state while keeping the receiver active. It is housed in an 8-pin µMAX package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Low-power shutdown mode maintains receiver activity while reducing supply current to 1µA
• RS-232-compatible performance with guaranteed ±3.7V output levels at high data rates
• Flow-through architecture supporting TTL/CMOS logic level translation

Applications

• Personal Digital Assistants (PDA)
• Global Positioning Systems (GPS)
• Point-of-Sale (POS) terminals
• Telecommunications equipment
• Set-top boxes

Procurement Notes

Verify that the component matches the specific ordering suffix EUA+, which indicates the extended temperature range (-40°C to +85°C) and the µMAX package type. Confirm RoHS compliance status as indicated by the '+' suffix in the part number. Ensure external power supplies provide stable ±5V rails with appropriate decoupling capacitors near the VCC and V- pins for proper functionality.

Selection Notes

Select this component when a single-channel RS-232 interface is required with minimal power consumption. It is suitable for applications needing a low-profile 8-pin µMAX package. Consider alternative packages like SOT23 or SO if pinout compatibility differs. Ensure the system can provide both positive and negative voltage rails, as the device does not include internal charge pumps.

Part Context

The MAX3314 belongs to Maxim Integrated's family of low-power RS-232 transceivers. It shares functional similarities with the MAX3316–MAX3319 series but utilizes external ±5V supplies instead of internal charge pumps. This design choice allows for robust performance in environments where external power rails are readily available, distinguishing it from single-supply alternatives.

Replacement Considerations

Direct replacements include other variants within the MAX3314 family, such as MAX3314ESA or MAX3314EKA, provided the package type matches the board layout. Cross-family replacements require verifying pin compatibility and ensuring the substitute supports external ±5V operation without internal charge pumps.