MAX3160EAP

Overview

The MAX3160EAP+ is a multiprotocol transceiver supporting RS-232, RS-485, and RS-422 standards. It operates on a single +3.0V to +5.5V supply using an internal dual charge pump. The device features pin-programmable configurations for two RS-232 drivers/receivers or a single RS-485/422 transceiver. It supports data rates up to 10Mbps in RS-485 mode and 1Mbps in RS-232 mode with slew-rate limiting disabled. Shutdown current is 1µA. Operating temperature range is -40°C to +85°C. Package: 20-pin SSOP.

Feature Summary

• Pin-programmable multiprotocol operation allows dynamic switching between RS-232 and RS-485/RS-422 modes without hardware changes.
• Integrated dual charge pump eliminates the need for external bipolar power supplies.
• Fail-safe receiver design prevents false transitions during input short circuits or open lines.
• Pin-selectable slew rate limiting minimizes electromagnetic interference and cable reflections.

Applications

• Industrial controls
• Point-of-Sales equipment
• RS-232 to RS-485 interface converters

Procurement Notes

Verify the 'E' suffix indicates the extended temperature range (-40°C to +85°C) and the 'AP+' suffix denotes the 20-pin SSOP package with lead-free/RoHS compliance. Confirm the specific ordering code matches the required protocol configuration and thermal specifications before procurement.

Selection Notes

Select this component when space-constrained designs require both RS-232 and RS-485 interfaces on a single bus. Ensure the application utilizes the flow-through pinout for simplified layout. Verify that the 1µA shutdown current meets low-power requirements while maintaining active RS-232 receivers.

Part Context

This part belongs to the MAX3160/MAX3161/MAX3162 family of multiprotocol transceivers. The MAX3160 specifically offers common transmitter outputs and receiver inputs for its RS-232 and RS-485/422 sections, optimizing it for multiprotocol operation on a single interface bus compared to the separate I/O options of other family members.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How is the communication protocol selected?

Protocol selection is achieved via the RS485/RS232 control pin. A logic high configures the device for RS-485/422 operation, while a logic low configures it for RS-232 operation.

What is the function of the FAST pin?

The FAST pin selects the slew rate. Driving it low enables slew-rate limiting for reduced EMI (up to 250kbps RS-485). Driving it high disables limiting, allowing speeds up to 10Mbps in RS-485 mode.

Does the device support half-duplex RS-485?

Yes. Asserting the HDPLX pin places the device in half-duplex mode, internally connecting the RS-485 receiver inputs to the driver outputs.