MAX3157CPI

Overview

The MAX3157CPI is a full-duplex RS-422 and RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within a single package, supporting data rates up to 250kbps. The device operates on a supply voltage ranging from 4.75V to 5.25V and features a receiver hysteresis of 25mV for noise immunity. Designed for through-hole mounting, it utilizes a 28-pin DIP (0.300 inch) package. The component supports an operating temperature range of 0°C to 70°C and complies with RoHS3 standards.

Feature Summary

• Full-duplex communication capability supporting both RS-422 and RS-485 protocols
• Integrated single driver and single receiver configuration
• Receiver input hysteresis designed to enhance noise rejection

Applications

• Industrial control systems requiring robust serial communication
• Building automation networks utilizing RS-485 bus topologies
• Data acquisition modules interfacing with legacy serial devices

Procurement Notes

Verify the current lifecycle status before procurement as this specific part number is listed as obsolete. Confirm that the 28-pin DIP package aligns with existing PCB footprints. Ensure the 4.75V to 5.25V supply voltage matches the system design requirements. Check for RoHS3 compliance documentation if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a full-duplex interface is required for RS-422 or RS-485 applications at speeds up to 250kbps. The 28-pin DIP package is suitable for prototyping or through-hole manufacturing processes. Consider the 25mV receiver hysteresis for environments with moderate electrical noise. Verify that the 0°C to 70°C operating temperature range meets the deployment conditions.

Part Context

This transceiver belongs to the MAX315 series of interface ICs. It serves as a legacy solution for serial communication in industrial and commercial equipment. The device provides a complete full-duplex link between line drivers and receivers, facilitating reliable data transmission over balanced differential lines.

Replacement Considerations

As the MAX3157CPI is obsolete, verify compatibility with newer MAX315 series variants. Ensure any substitute maintains the 28-pin DIP footprint and full-duplex functionality. Cross-reference pinouts carefully to avoid wiring errors during replacement.