MAX3488ECPA

Overview

The MAX3488ECPA is a full-duplex transceiver for RS-422 and RS-485 communications, manufactured by Analog Devices Inc. (Maxim Integrated). It operates from a single +3.3V supply with a voltage range of 3.0V to 3.6V. The device features one driver and one receiver with slew-rate-limited drivers to minimize EMI and reduce reflections, supporting data rates up to 250kbps. It provides ±15kV ESD protection on I/O pins and includes thermal shutdown and current limiting for driver overload protection. The component is housed in an 8-pin Plastic DIP package and supports an operating temperature range of 0°C to +70°C.

Feature Summary

• Slew-rate limited drivers minimize electromagnetic interference and reduce signal reflections caused by improperly terminated cables.
• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs withstands high static electricity events without damage.
• Driver outputs are protected against excessive power dissipation through thermal shutdown circuitry that forces outputs into a high-impedance state.
• Receiver input features fail-safe functionality that guarantees a logic-high output when both inputs are open circuit.

Applications

• Telecommunications
• Industrial-Control Local Area Networks
• Transceivers for EMI-Sensitive Applications
• Integrated Services Digital Networks
• Packet Switching

Procurement Notes

Verify the specific ordering suffix 'CPA' corresponds to the 8-pin Plastic DIP package variant rather than the SOIC option. Confirm the 'E' suffix indicates the commercial temperature range of 0°C to +70°C, distinct from the extended industrial range. Ensure compatibility with the required communication protocol and interface standards before finalizing procurement orders.

Selection Notes

Select this component for applications requiring full-duplex communication over RS-422 or RS-485 buses where low electromagnetic interference is critical. The slew-rate-limited driver makes it suitable for long cable runs or environments with improper termination. It is appropriate for systems powered by a single 3.3V supply that require robust ESD protection and fail-safe receiver behavior during bus idle states.

Part Context

This part belongs to the MAX3483E family of low-power transceivers designed for bidirectional data communications. Unlike half-duplex variants in the same series, the MAX3488E supports simultaneous transmission and reception. It shares common protection features such as thermal shutdown and high ESD tolerance with other members of the Maxim Integrated interface IC portfolio.

Replacement Considerations

MAX3488ESA+ offers identical electrical specifications but utilizes an 8-pin SOIC surface-mount package instead of the Plastic DIP form factor.

FAQ

Does the MAX3488E support a low-current shutdown mode?

No, the MAX3488E does not feature a shutdown mode. Only the MAX3483E, MAX3485E, MAX3486E, and MAX3491E include this capability.

What is the maximum data rate supported by the MAX3488E?

The MAX3488E supports data rates up to 250kbps due to its slew-rate-limited driver design.

How does the MAX3488E handle driver overload conditions?

It employs short-circuit current limiting and thermal shutdown circuitry to protect the driver outputs from excessive power dissipation.