MAX3042BCSE+

Overview

The MAX3042BCSE+ is a quad RS-485/RS-422 transmitter manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and supports data rates up to 20Mbps. The device features ±10kV ESD protection (Human Body Model) and ±4kV Electrical Fast Transient/Burst immunity per IEC 1000-4-4. It includes hot-swap capability to prevent false transitions during power-up or insertion. Operating temperature range is 0°C to +70°C. Supply current is 1mA, with shutdown mode consuming 2nA. Propagation delay is typically 23ns. Package is 16-pin Narrow SO.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• Robust transient immunity including ±10kV ESD protection and ±4kV fast transient burst resistance.
• Low-power operation with 1mA active supply current and 2nA shutdown mode consumption.
• Pin-compatible with industry-standard 'SN75174 and 'DS26LS31C devices.

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter for ESD-sensitive applications
• Hand-held equipment
• Industrial PLCs

Procurement Notes

Verify the specific suffix BCSE corresponds to the 0°C to +70°C industrial temperature range and 16-pin Narrow SO package. Confirm RoHS compliance status through official manufacturer documentation. Ensure compatibility with existing system voltage levels and interface requirements before procurement.

Selection Notes

Select this component when high-speed data transmission up to 20Mbps is required on RS-485 or RS-422 networks. It is suitable for environments requiring robust ESD and transient protection without external components. Consider pin compatibility with legacy SN75174 designs if upgrading existing hardware.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad transmitters. The MAX3042B variant specifically targets higher data rates compared to the 250kbps MAX3040/MAX3043 or 2.5Mbps MAX3041/MAX3044 models within the same series.

Replacement Considerations

Public confirmed substitutes include SN75174 and DS26LS31C due to pin compatibility. Verify electrical specifications and temperature ranges match application requirements when substituting.

FAQ

What is the maximum data rate supported by the MAX3042BCSE+?

The MAX3042BCSE+ supports data rates up to 20Mbps.

How does the hot-swap feature function?

It holds the enable inputs in a disabled state during power-up or board insertion to prevent false transitions on the data cable.

What is the shutdown mode supply current?

The shutdown mode supply current is 2nA.