MAX3045BCUE+T

Overview

The MAX3045BCUE+T is a quad RS-485/RS-422 transmitter designed for digital data transmission over twisted-pair balanced lines. It operates from 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 on all outputs 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 TSSOP package and operates within an industrial temperature range of 0°C to +70°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, while operating supply current is typically 1mA
• Pin-compatible with industry-standard 'SN75174 and 'DS26LS31C devices

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter applications requiring ESD sensitivity
• Hand-held equipment
• Industrial PLCs and networking

Procurement Notes

Verify the specific suffix 'BCUE' corresponds to the required 0°C to +70°C temperature range and 16-pin TSSOP package configuration. Confirm that the '+T' designation indicates tape-and-reel packaging if reel quantity is required for assembly. Ensure the component meets RoHS compliance standards as indicated by the manufacturer's documentation.

Selection Notes

Select this component when a quad transmitter is needed without integrated receivers. The MAX3045B variant is specifically chosen for its 20Mbps data rate capability compared to lower-speed family members. Verify compatibility with external line receivers such as the MAX3093E or MAX3095 for complete system functionality. Consider the hot-swap feature if the circuit will be inserted into live backplanes.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad RS-485/RS-422 transmitters. While other family members offer different data rates like 250kbps or 2.5Mbps, the MAX3045B is optimized for high-speed transfers up to 20Mbps. It serves as a low-power, ESD-protected upgrade to legacy interface chips.

Replacement Considerations

Public confirmed substitutes include the MAX3042BCUE+T, which shares identical electrical characteristics and pinout. Other compatible parts in the series are the MAX3040 through MAX3044 variants, provided their respective data rate limits meet the application requirements.