MAX3162EEAI+

Overview

The MAX3162EEAI+ is a multiprotocol transceiver from Analog Devices/Maxim Integrated, housed in a 28-pin SSOP package. It operates on a single +3.0V to +5.5V supply and integrates dual charge pumps for RS-232 compliance without requiring bipolar supplies. The device simultaneously provides a 2Tx/2Rx RS-232 interface and a half-duplex RS-485/RS-422 transceiver. It supports data rates up to 1Mbps for RS-232 and 10Mbps for RS-485/RS-422 when slew-rate limiting is disabled. ESD protection is rated at ±15kV (HBM), and the shutdown current is 1µA.

Feature Summary

• Simultaneous operation of a 2Tx/2Rx RS-232 interface and a half-duplex RS-485/RS-422 transceiver within a single package.
• Integrated dual charge pump circuitry enables RS-232 performance using only a single +3.0V to +5.5V power supply.
• Pin-selectable transmitter slew rates allow optimization between low EMI emissions and high-speed data transmission.
• Enhanced robustness features include ±15kV ESD protection per JEDEC standards and true fail-safe receiver logic.

Applications

• Point-of-Sales Equipment
• Industrial Controls
• Networking Peripherals
• Security Systems

Procurement Notes

Verify the 'E' suffix confirms the -40°C to +85°C extended temperature range and the 'AI' suffix indicates the 28-pin SSOP package. Confirm RoHS compliance status via the manufacturer's official documentation before integration. Check for active obsolescence notices or lifecycle changes directly from Analog Devices to ensure long-term availability.

Selection Notes

Select this component when simultaneous RS-232 and RS-485 communication is required on a single board. The MAX3162E is distinct from the MAX3160E and MAX3161E due to its separate digital I/O ports, making it suitable for protocol translation between two independent buses. Ensure the application benefits from the flow-through pinout layout for simplified PCB routing.

Part Context

This part belongs to the MAX3160E/MAX3161E/MAX3162E family of multiprotocol transceivers. While the MAX3160E shares I/O ports for single-bus multiprotocol use and the MAX3161E shares logic lines for UART multiplexing, the MAX3162E provides fully isolated interfaces for both protocols. This specific configuration supports complex gateway applications requiring concurrent serial standard handling.

Replacement Considerations

Publicly confirmed substitutes include the MAX3162EAI+T (tape and reel variant) and the MAX3162EASA+ (SOIC-28 package variant). Verify pin compatibility and thermal characteristics when transitioning between package types.

FAQ

How does the FAST input affect data transmission?

Asserting the FAST input disables slew-rate limiting, allowing data rates up to 10Mbps for RS-485/RS-422 and 1Mbps for RS-232. Deasserting FAST limits the slew rate to minimize EMI and cable reflections.

What is the function of the HDPLX pin?

The HDPLX pin configures the RS-485/RS-422 section for half-duplex operation when asserted high. In this mode, the receiver inputs are internally connected to the driver outputs.

Does the shutdown mode disable all receivers?

No. When the SHDN pin is driven low, the charge pump and transmitters shut down, but the RS-232 receivers remain active if the device is configured in RS-232 mode.