MAX3314EEKA+T

Overview

The MAX3314EEKA+T is an RS-232-compatible transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates with external ±5V power supplies (VCC: 4.75V to 5.25V; V-: -4.75V to -5.25V) and supports data rates up to 460kbps. The device features a low-dropout output stage providing minimum ±3.7V levels at 3kΩ and 1000pF loads. It includes a shutdown function reducing supply current to 1µA while keeping the receiver active. ESD protection ratings are ±15kV (Human Body Model), ±8kV (IEC Contact Discharge), and ±15kV (IEC Air-Gap). It is housed in an 8-pin SOT23 package with an operating temperature range of -40°C to +85°C.

Feature Summary

• ESD protection on RS-232 I/O pins rated for ±15kV Human Body Model, ±8kV IEC Contact Discharge, and ±15kV IEC Air-Gap Discharge
• Shutdown mode reduces supply current to 1µA while maintaining receiver activity
• Low-power operation with 30µA typical operating supply current
• Guaranteed data rate of 460kbps with ±3.7V RS-232-compatible output levels

Applications

• Digital Cameras
• PDAs
• GPS Systems
• POS Terminals
• Telecommunications Equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) and 'KA' denotes the SOT23-8 package. Ensure ordering documentation matches the exact part number MAX3314EEKA+T to avoid confusion with commercial variants or different packaging options.

Selection Notes

Select this component when designing systems requiring RS-232 communication with strict power constraints. The integrated shutdown feature allows for significant power savings in portable devices without losing receive capability. Verify that the application can provide stable external ±5V rails, as internal charge pumps are not included. Ensure PCB layout accommodates the required decoupling capacitors for both positive and negative supply lines.

Part Context

This part belongs to the MAX3314E family of single-channel RS-232 transceivers. The 'E' suffix specifies the industrial temperature grade (-40°C to +85°C), distinguishing it from the commercial grade 'C' variant. The 'KA' suffix identifies the 8-pin SOT23 surface-mount package. Other package options include µMAX (UA) and SO (SA).

Replacement Considerations

Direct substitutes within the same family include MAX3314ECKA-T (commercial temp) and MAX3314EESA (SO package). Cross-family replacements require matching RS-232 compatibility, voltage requirements, and pin configurations.