MAX3314EESA+

Overview

The MAX3314EESA+ is a single RS-232-compatible transceiver in an 8-pin SO package. It operates from external ±5V supplies (VCC: 4.75V to 5.25V; V-: -4.75V to -5.25V). The device supports data rates up to 460kbps with a guaranteed minimum output swing of ±3.7V under worst-case loads (3kΩ parallel 1000pF). Operating supply current is 30µA, reducing to 1µA in shutdown mode where the transmitter enters tristate but the receiver remains active. ESD protection ratings include ±15kV Human Body Model and ±15kV IEC 1000-4-2 Air-Gap Discharge.

Feature Summary

• Integrated ±15kV ESD protection on RS-232 I/O pins compliant with IEC 1000-4-2 standards
• Low-power shutdown capability reduces supply current to 1µA while maintaining receiver activity
• Flow-through architecture simplifies board layout for single-channel communication

Applications

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

Procurement Notes

Verify the specific suffix 'EESA+' against the manufacturer's official ordering information to confirm the extended temperature range (-40°C to +85°C) and SOIC-8 packaging. Ensure that external power supplies providing both positive and negative voltages are available, as this component does not generate internal charge pump voltages.

Selection Notes

Select this component when designing systems requiring robust ESD protection without additional discrete components. It is suitable for applications needing low standby power consumption via the shutdown pin. Verify that the system can accommodate dual-rail power supplies, as the device requires separate +5V and -5V inputs rather than a single supply.

Part Context

The MAX3314E belongs to Maxim Integrated's family of low-power RS-232 transceivers designed for portable electronics. Unlike many contemporaries, it relies on external voltage rails rather than internal charge pumps, which influences the surrounding circuit design requirements regarding capacitor selection and power management strategies.

Replacement Considerations

MAX3314EEUA

FAQ

Does the MAX3314E generate its own high-voltage outputs?

No, the MAX3314E requires external +5V and -5V power supplies to function and does not contain an internal charge pump.

What happens to the receiver during shutdown mode?

During shutdown mode, the transmitter is disabled and placed in a high-impedance state, but the receiver remains active.

How is the SHDN pin utilized?

Driving the SHDN pin low disables the transmitter and reduces supply current to 1µA. Driving it high returns the device to normal operation.