MAX1487CSA

Drivers, Receivers, Transceivers Overview

The MAX1487CSA is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within an 8-pin SO package. The device operates from a single 5V supply (4.75V to 5.25V) and supports data transmission rates up to 2.5Mbps with unrestricted slew rates. It features quarter-unit-load receiver input impedance, allowing up to 128 transceivers on the bus. Key electrical parameters include a typical quiescent current of 230µA, a common-mode input voltage range of -7V to +12V, and an operating temperature range of 0°C to +70°C.

Drivers, Receivers, Transceivers Feature Summary

• Half-duplex communication capability designed for bidirectional data transmission on multipoint bus lines.
• Quarter-unit-load receiver input impedance enables high node density, supporting up to 128 devices on a single bus.
• Integrated thermal shutdown circuitry protects against excessive power dissipation by placing outputs in a high-impedance state.
• Fail-safe receiver input guarantees a logic-high output if the differential inputs are left open.

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485 Transceivers
• Low-Power RS-422 Transceivers
• Level Translators
• Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CSA' corresponds to the commercial temperature grade (0°C to +70°C) and SOIC-8 package format as defined in the official ordering information. Confirm that the component meets the required environmental specifications for the intended deployment environment before integration into final designs.

Drivers, Receivers, Transceivers Selection Notes

Select the MAX1487CSA when high-speed data rates up to 2.5Mbps are required without slew-rate limiting. This model is appropriate for applications needing high bus capacity (128 nodes) and low standby power consumption. Ensure the system operates within the specified 5V supply range and commercial temperature limits.

Drivers, Receivers, Transceivers Part Context

The MAX1487 belongs to the Maxim Integrated family of low-power RS-485/RS-422 transceivers, which also includes the MAX481, MAX483, MAX485, MAX487 through MAX491. Unlike the slew-rate-limited MAX487, the MAX1487 offers higher speed capabilities while maintaining similar low-power characteristics and fault protection features.

Drivers, Receivers, Transceivers Replacement Considerations

MAX487CSA: Suitable replacement if reduced data rate (250kbps) and slew-rate limiting are acceptable. MAX481CSA: Alternative for similar speed but lower bus load capacity (32 nodes). Verify pin compatibility and electrical parameter alignment for direct substitution.