MAX1489EESD+T

Drivers, Receivers, Transceivers Overview

The MAX1489EESD+T is a quad, low-power line receiver designed for EIA/TIA-232, EIA/TIA-562, and CCITT V.28 communications in harsh environments. It features ±15kV electrostatic discharge (ESD) protection on each input with a ±25V range, hysteresis, and time-domain filtering. The outputs are TTL and CMOS compatible, supporting a guaranteed data rate of 120kbps. Supply current is typically 350µA at VCC = 5V. The device operates over an industrial temperature range of -40°C to +85°C and is housed in a 14-pin SO package.

Drivers, Receivers, Transceivers Feature Summary

• Enhanced ESD protection withstands ±15kV Human Body Model and ±8kV IEC1000-4-2 contact discharge without latchup.
• Integrated input hysteresis and time-domain filtering eliminate the need for external noise suppression components.
• Low power consumption with typical supply current of 350µA ensures efficient operation in battery-powered systems.

Drivers, Receivers, Transceivers Applications

• PC Motherboards
• Modems
• Interfacing Data Terminal Equipment (DTE) with Data Circuit-Terminating Equipment (DCE)
• Equipment requiring IEC1000-4-2 or ±15kV ESD Protection

Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as indicated by distributor listings. Confirm the '+T' designation aligns with RoHS compliance requirements specified in the manufacturer's documentation. Ensure the specific variant matches the required operating temperature range and package dimensions before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing RS-232 interfaces requiring robust ESD immunity and low power consumption. Verify compatibility with existing MC1489, SN75189, or DS1489 footprints if migrating from legacy designs. Ensure the system voltage remains within the 4.5V to 5.5V range to maintain guaranteed timing parameters and output logic levels.

Drivers, Receivers, Transceivers Part Context

The MAX1489E belongs to Maxim Integrated's family of low-power RS-232 receivers. It serves as a direct pin-compatible replacement for older generations like the MC1489 and SN75C189. This series emphasizes reliability in noisy industrial environments through integrated filtering and high-voltage tolerance inputs.

Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include MC1489, MC14C89, SN75189, SN75C189, DS1489, and DS14C89 due to pin compatibility. Verify that substitute parts meet the same ESD protection standards and operating temperature ranges required for the application.

Drivers, Receivers, Transceivers FAQ

Does the MAX1489E require external filtering components?

No, the device features integrated input hysteresis and time-domain filtering, which eliminates the need for external filtering components.

What is the maximum ESD protection rating for the inputs?

The inputs are protected against ±15kV electrostatic discharge shocks using the Human Body Model and ±15kV via Air-Gap Discharge per IEC1000-4-2.

Is the MAX1489E latchup-free during ESD events?

Yes, the device is designed to be latchup-free during an ESD event, ensuring continued operation after exposure to static discharges.