MAX3162CAI+

Overview

The MAX3162CAI+ is a multiprotocol transceiver from Analog Devices/Maxim Integrated, operating within a +3.0V to +5.5V supply range and an industrial temperature range of 0°C to +70°C. It integrates a 2TX/2RX RS-232 interface with a single RS-485/422 transceiver in a 28-pin SSOP package. The device supports data rates up to 1Mbps for RS-232 and 10Mbps for RS-485/422 when slew-rate limiting is disabled. It features a proprietary low-dropout transmitter output stage and an on-board dual charge pump that eliminates the need for bipolar ±12V supplies. Shutdown current is reduced to 1µA.

Feature Summary

• Simultaneous operation of a 2TX/2RX RS-232 interface and a half-duplex RS-485/422 transceiver
• Integrated dual charge-pump circuitry enabling single-supply operation without external bipolar voltage rails
• Pin-selectable transmitter slew rates to minimize EMI and reduce cable reflections
• True fail-safe receiver design preventing false transitions during input short or open conditions

Applications

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

Procurement Notes

Verify the specific suffix 'CAI+' against official documentation to confirm the commercial temperature range (0°C to +70°C) and lead-free/RoHS compliance status. Ensure the 28-pin SSOP package dimensions match your board layout requirements. Cross-reference the manufacturer's latest datasheet revision to validate all electrical parameters before finalizing procurement specifications.

Selection Notes

Select the MAX3162CAI+ when simultaneous independent RS-232 and RS-485/422 communication channels are required within a single component. This part is suitable for applications needing protocol translation between two distinct buses. Consider the MAX3162EAI+ variant if extended industrial temperature operation (-40°C to +85°C) is necessary instead of the commercial grade specified by the CAI suffix.

Part Context

The MAX3162CAI+ belongs to the MAX3160/MAX3161/MAX3162 family of programmable multiprotocol transceivers. While the MAX3160 and MAX3161 share digital I/O pins between protocols, the MAX3162 provides separate digital I/O pins for its RS-232 and RS-485/422 sections. This separation optimizes the device for complex protocol translation tasks compared to the multiplexed configurations of its siblings.

Replacement Considerations

The MAX3162EAI+ serves as a direct functional substitute offering the same pinout and capabilities but with an extended temperature range of -40°C to +85°C.