MAX3045BCSE+T

Overview

The MAX3045BCSE+T 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 with a maximum data rate of 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. Operating temperature range is 0°C to +70°C. Supply current is 1mA typical, dropping to 2nA in shutdown mode. It is housed in a 16-pin Narrow SO package.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• Robust electromagnetic immunity with ±10kV HBM ESD protection and ±4kV IEC 1000-4-4 EFT/B immunity.
• 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 applications requiring ESD sensitivity
• Hand-held industrial equipment
• Industrial PLC networks

Procurement Notes

Verify the specific suffix 'BCSE' corresponds to the required commercial temperature range (0°C to +70°C) and the narrow SOIC-16 package format. Confirm that the '+T' designation aligns with the intended reel packaging requirements for surface-mount assembly processes. Cross-reference the manufacturer's latest documentation to ensure component availability and compliance status.

Selection Notes

Select this component when high-speed data rates up to 20Mbps are required alongside robust transient protection. It serves as a direct upgrade to legacy SN75174 drivers, offering superior ESD tolerance and lower power consumption. Ensure compatibility with 5V quad differential line receivers such as the MAX3093E or MAX3095 for optimal system performance.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad transmitters. While other variants like the MAX3040 offer 250kbps speeds, the MAX3045B variant specifically targets high-speed applications up to 20Mbps. It complements receiver families like the MAX3093E/MAX3095 to form complete RS-485/RS-422 communication links.

Replacement Considerations

The MAX3045BCSE+T is pin-compatible with the 'SN75174 and 'DS26LS31C. It also shares pinouts with the MAX3042B for similar speed applications but differs in enable logic configuration. Verify that substitute components maintain the required 20Mbps data rate and ESD protection levels.