MAX3161CAG+

Overview

The MAX3161CAG+ is a multiprotocol transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single +3.0V to +5.5V supply and features an internal dual charge pump for RS-232 compliance. The device supports pin-selectable operation as either a 2TX/2RX RS-232 interface or a single RS-485/422 transceiver. It provides data rates up to 1Mbps in RS-232 mode and up to 10Mbps in RS-485/422 mode when slew-rate limiting is disabled. The component includes integrated protection against wiring faults, short circuits, and thermal overload. It is housed in a 24-pin SSOP package and operates within a temperature range of 0°C to +70°C.

Feature Summary

• Pin-programmable configuration allows selection between 2TX/2RX RS-232 and single RS-485/422 transceiver modes.
• Integrated dual charge pump eliminates the need for external bipolar power supplies.
• Pin-selectable transmitter slew rates minimize electromagnetic interference and reduce cable reflections.
• True fail-safe receiver prevents false transitions during input shorts or open conditions.

Applications

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

Procurement Notes

Verify that the ordering suffix 'CAG+' corresponds to the commercial temperature range (0°C to +70°C) and lead-free/RoHS-compliant packaging. Confirm the specific package variant matches the required board layout dimensions. Ensure compatibility with the intended voltage supply levels before finalizing procurement orders.

Selection Notes

Select the MAX3161CAG+ when a single UART needs to be multiplexed across two distinct interface buses using shared digital I/O pins. This model is appropriate for designs requiring separate physical outputs for RS-232 and RS-485 protocols but sharing logic inputs. Verify that the commercial temperature range meets the environmental requirements of the target application.

Part Context

The MAX3161CAG+ belongs to the MAX3160/MAX3161/MAX3162 family of programmable multiprotocol transceivers. Unlike the MAX3160 which shares I/O pins completely, the MAX3161 offers separate transmitter and receiver outputs for both protocols while maintaining common digital control lines. This architecture facilitates efficient board space utilization in compact embedded systems.

Replacement Considerations

The MAX3161EAG+ serves as the extended temperature version (-40°C to +85°C) of this component. Both devices share identical electrical characteristics and pinouts, differing only in their specified operating temperature ranges.