MAX3045BESE+

Overview

The MAX3045BESE+ is a quad RS-485/RS-422 transmitter from the MAX3040–MAX3045 family, designed for digital data transmission over twisted-pair balanced lines. It operates on a single +5V supply (4.75V to 5.25V) and supports data rates up to 20Mbps. The device features ±10kV Human Body Model ESD protection and withstands ±4kV Electrical Fast Transient/Burst stress per IEC 1000-4-4. It includes hot-swap capability to prevent false transitions during power-up or insertion. The component is housed in a 16-pin Narrow SO package and operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Hot-swap capability eliminates false transitions on the data cable during power-up or hot insertion
• Outputs protected to ±10kV using the Human Body Model and withstand ±4kV per IEC 1000-4-4 Electrical Fast Transient/Burst Stressing
• Low-power shutdown mode consumes only 2nA with inputs pulled low
• Pin-compatible with industry-standard 'SN75174 and 'DS26LS31C

Applications

• Telecommunications Equipment
• Industrial Motor Control
• Transmitter for ESD-Sensitive Applications
• Hand-Held Equipment
• Industrial PLCs

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Confirm RoHS compliance status through current datasheets as manufacturing processes may evolve. Ensure the narrow SO package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when high-speed data transfer up to 20Mbps is required alongside robust ESD protection. It serves as a direct upgrade to legacy SN75174 and DS26LS31C devices. Verify that the system design accommodates the 16-pin Narrow SO physical dimensions and that the operating environment falls within the specified -40°C to +85°C range.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad RS-485/RS-422 transmitters. While other variants in the series offer lower data rates like 250kbps or 2.5Mbps, the MAX3045B variant is specifically optimized for speeds up to 20Mbps. The family shares common pinouts and functionality but differs in speed capabilities and enable pin configurations.

Replacement Considerations

The MAX3045BESE+ is pin-compatible with the 'SN75174, 'DS26LS31C, and LTC487. When replacing these legacy components, verify that the new circuit can support the higher 20Mbps data rate if applicable.