MAX3161ECAG+T

Overview

The MAX3161ECAG+T is a programmable multiprotocol transceiver supporting RS-232, RS-485, and RS-422 interfaces. It operates on a single +3.0V to +5.5V supply with integrated dual charge pumps. The device features ±15kV ESD protection per Human Body Model. In RS-485/RS-422 mode, it supports data rates up to 10Mbps; in RS-232 mode, up to 1Mbps. Supply current is typically 2.8mA, reducing to 1µA in shutdown. It includes pin-selectable slew rate limiting for EMI reduction. The component is housed in a 24-pin SSOP package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Pin-programmable configuration allows operation as either a 2Tx/2Rx RS-232 interface or a single RS-485/RS-422 transceiver.
• Integrated dual charge pump eliminates the need for external bipolar supplies, enabling single-supply operation.
• Transmitter outputs and receiver inputs feature enhanced ±15kV electrostatic discharge protection.
• Pin-selectable slew-rate limiting minimizes electromagnetic interference and cable reflections.

Applications

• Point-of-Sales Equipment
• Industrial Controls
• RS-232 to RS-485 Interface Converters

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Confirm that the 'T' suffix indicates tape-and-reel packaging if required by assembly equipment. Ensure compatibility with RoHS standards and lead-free requirements specified in the manufacturer's datasheet before finalizing procurement.

Selection Notes

Select this component when a design requires flexibility between RS-232 and RS-485/RS-422 protocols using a single UART. The MAX3161E is optimized for multiplexing a single UART across two interface buses due to its separate transmitter/receiver outputs but shared digital I/O ports. Consider the 24-pin SSOP package constraints and verify that the 10nA shutdown current meets low-power system requirements.

Part Context

The MAX3161E belongs to the MAX3160/MAX3161/MAX3162 family of low-power multiprotocol transceivers. Unlike the MAX3160E which shares I/O ports, the MAX3161E provides separate driver and receiver outputs for both protocols while sharing logic inputs. This architecture facilitates connecting a single microcontroller UART to multiple bus types without complex external switching circuitry.

Replacement Considerations

MAX3160ECAG+ offers similar functionality but shares I/O ports, requiring different board layout strategies. MAX3162ECAG+ provides simultaneous independent RS-232 and RS-485 operation with separate I/Os, suitable for protocol translation rather than simple multiplexing. Verify pinout compatibility and software configuration differences when substituting.